diff --git a/apps/cli/src/http/routes/web/import.ts b/apps/cli/src/http/routes/web/import.ts
index 88faabc7..50820713 100644
--- a/apps/cli/src/http/routes/web/import.ts
+++ b/apps/cli/src/http/routes/web/import.ts
@@ -12,6 +12,7 @@ import {
   importDemoSessions,
   type DatabaseManager,
 } from '@openchatlab/node-runtime'
+import { PARSER_FORMAT_IDS } from '@openchatlab/parser'
 import {
   autoImport,
   autoImportBatch,
@@ -84,7 +85,7 @@ export function registerImportRoutes(
     options.runPreparedImport ??
     (async (manifestPath: string, onProgress: (progress: unknown) => void, sessionGapThreshold?: number) => {
       const result = await runAutoImport(manifestPath, {
-        formatId: 'google-chat-takeout',
+        formatId: PARSER_FORMAT_IDS.GOOGLE_CHAT_NATIVE,
         sessionGapThreshold,
         nativeBinding: resolveNativeBinding(),
         onProgress: onProgress as any,
diff --git a/apps/desktop/main/ipc/chat.ts b/apps/desktop/main/ipc/chat.ts
index e4480700..6243beaf 100644
--- a/apps/desktop/main/ipc/chat.ts
+++ b/apps/desktop/main/ipc/chat.ts
@@ -11,6 +11,7 @@ import { appLogger } from '@openchatlab/node-runtime'
 import * as databaseCore from '../database/core'
 import * as worker from '../worker/workerManager'
 import {
+  PARSER_FORMAT_IDS,
   detectFormat,
   findEntryFileInDirectory,
   getSupportedFormats,
@@ -155,7 +156,7 @@ export function registerChatHandlers(ctx: IpcContext): void {
           worker.autoImport(
             manifestPath,
             forwardImportProgress,
-            { formatId: 'google-chat-takeout' },
+            { formatId: PARSER_FORMAT_IDS.GOOGLE_CHAT_NATIVE },
             undefined,
             options?.sessionGapThreshold
           )
diff --git a/packages/node-runtime/src/import/archive/google-chat-resolver.ts b/packages/node-runtime/src/import/archive/google-chat-resolver.ts
index 2711aa22..20b76c7a 100644
--- a/packages/node-runtime/src/import/archive/google-chat-resolver.ts
+++ b/packages/node-runtime/src/import/archive/google-chat-resolver.ts
@@ -5,6 +5,7 @@ import streamChain from 'stream-chain'
 import streamJson from 'stream-json'
 import pickModule from 'stream-json/filters/Pick.js'
 import streamValuesModule from 'stream-json/streamers/StreamValues.js'
+import { PARSER_FORMAT_IDS } from '@openchatlab/parser'
 import { ArchiveImportError } from './errors'
 import type { ZipArchiveReader } from './archive-reader'
 import type { ArchiveEntrySummary, ArchiveResolver, MaterializedImport, PreparedImportChat } from './types'
@@ -88,7 +89,7 @@ function deriveConversationName(draft: ConversationDraft, ownerEmail: string | n
 }
 
 export class GoogleChatTakeoutResolver implements ArchiveResolver {
-  readonly id = 'google-chat-takeout'
+  readonly id = PARSER_FORMAT_IDS.GOOGLE_CHAT_NATIVE
   readonly platform = 'google-chat'
 
   detect(entries: ArchiveEntrySummary[]): boolean {
diff --git a/packages/node-runtime/src/import/streaming-importer.test.ts b/packages/node-runtime/src/import/streaming-importer.test.ts
index 625c761b..bdef9bd8 100644
--- a/packages/node-runtime/src/import/streaming-importer.test.ts
+++ b/packages/node-runtime/src/import/streaming-importer.test.ts
@@ -459,7 +459,7 @@ test('streamingImport builds the session index exactly once with the requested g
 test(
   'streamingImport persists shuakami/qq-chat-exporter V4 native-first output without a derived FTS table',
   {
-    skip: !isNativeFormatAvailable('shuakami-qq-exporter') && 'native shuakami/qq-chat-exporter kernel not built',
+    skip: !isNativeFormatAvailable('qq-shuakami') && 'native shuakami/qq-chat-exporter kernel not built',
   },
   async (t) => {
     const root = makeTempDir()
@@ -529,7 +529,7 @@ test('streamingImport skips preprocessing when the selected format has native su
     isNativeFormatAvailable: () => true,
   }
 
-  const result = await streamingImport(filePath, deps, { formatId: 'shuakami-qq-exporter' }, 'native-preprocess-gate')
+  const result = await streamingImport(filePath, deps, { formatId: 'qq-shuakami' }, 'native-preprocess-gate')
 
   assert.equal(result.success, true)
   assert.equal(result.diagnostics?.messagesWritten, 2)
@@ -538,7 +538,7 @@ test('streamingImport skips preprocessing when the selected format has native su
   assert.equal(fixture.getTempFilePath(), null)
 })
 
-test('streamingImport preprocesses directly when native support is unavailable', async (t) => {
+test('streamingImport accepts a released format alias when native support is unavailable', async (t) => {
   const root = makeTempDir()
   t.after(() => fs.rmSync(root, { recursive: true, force: true }))
   const filePath = writeSingleFileShuakamiQqExport(root)
@@ -586,7 +586,7 @@ test('streamingImport cleans a generated shuakami/qq-chat-exporter slim file whe
           isNativeFormatAvailable: () => false,
         },
       },
-      { formatId: 'shuakami-qq-exporter' },
+      { formatId: 'qq-shuakami' },
       'shuakami-qq-preprocess-setup-failure'
     ),
     /database setup failed for test/
diff --git a/packages/parser-native/src/lib.rs b/packages/parser-native/src/lib.rs
index 1432e527..065e473b 100644
--- a/packages/parser-native/src/lib.rs
+++ b/packages/parser-native/src/lib.rs
@@ -31,7 +31,7 @@ use protocol::{NativeMember, NativeParseProgress};
 // ==================== Format registry ====================
 
 /// Kernel ids understood by the `NativeParser` constructor. The TS side maps
-/// sniffer format ids onto these (e.g. ycccccccy-echotrace reuses "weflow").
+/// public parser ids onto these (e.g. echotrace reuses "weflow").
 #[derive(Clone, Copy)]
 enum FormatKind {
     Weflow,
diff --git a/packages/parser/browser.ts b/packages/parser/browser.ts
index ed6c66e0..ad51a814 100644
--- a/packages/parser/browser.ts
+++ b/packages/parser/browser.ts
@@ -25,3 +25,10 @@ export {
   type WeFlowJsonParseResult,
 } from './src/browser/weflow'
 export { rebaseChatLabDemoDocuments, type RebasedChatLabDemoDocuments } from './src/chatlab-demo-timeline'
+export {
+  PARSER_FORMAT_IDS,
+  LEGACY_PARSER_FORMAT_ID_ALIASES,
+  isParserFormatId,
+  normalizeParserFormatId,
+  type ParserFormatId,
+} from './src/format-ids'
diff --git a/packages/parser/src/format-ids.test.ts b/packages/parser/src/format-ids.test.ts
new file mode 100644
index 00000000..3899381e
--- /dev/null
+++ b/packages/parser/src/format-ids.test.ts
@@ -0,0 +1,27 @@
+import assert from 'node:assert/strict'
+import { describe, it } from 'node:test'
+
+import {
+  getFormatFeatureById,
+  getSupportedFormats,
+  LEGACY_PARSER_FORMAT_ID_ALIASES,
+  normalizeParserFormatId,
+} from './index'
+
+describe('parser format ID compatibility', () => {
+  it('advertises canonical IDs while resolving every released legacy input alias', () => {
+    const supportedIds = new Set<string>(getSupportedFormats().map((format) => format.id))
+
+    for (const [legacyId, canonicalId] of Object.entries(LEGACY_PARSER_FORMAT_ID_ALIASES)) {
+      assert.equal(normalizeParserFormatId(legacyId), canonicalId)
+      assert.equal(getFormatFeatureById(legacyId)?.id, canonicalId)
+      assert.equal(supportedIds.has(canonicalId), true)
+      assert.equal(supportedIds.has(legacyId), false)
+    }
+  })
+
+  it('leaves unknown IDs unchanged so callers can reject them normally', () => {
+    assert.equal(normalizeParserFormatId('future-format'), 'future-format')
+    assert.equal(getFormatFeatureById('future-format'), null)
+  })
+})
diff --git a/packages/parser/src/format-ids.ts b/packages/parser/src/format-ids.ts
new file mode 100644
index 00000000..0767b2bf
--- /dev/null
+++ b/packages/parser/src/format-ids.ts
@@ -0,0 +1,37 @@
+export const PARSER_FORMAT_IDS = {
+  CHATLAB: 'chatlab',
+  CHATLAB_JSONL: 'chatlab-jsonl',
+  QQ_SHUAKAMI: 'qq-shuakami',
+  QQ_SHUAKAMI_CHUNKED: 'qq-shuakami-chunked',
+  WEFLOW: 'weflow',
+  ECHOTRACE: 'echotrace',
+  DISCORD_TYRRRZ: 'discord-tyrrrz',
+  TELEGRAM_NATIVE: 'telegram-native',
+  TELEGRAM_NATIVE_SINGLE: 'telegram-native-single',
+  GOOGLE_CHAT_NATIVE: 'google-chat-native',
+  INSTAGRAM_NATIVE: 'instagram-native',
+  WHATSAPP_NATIVE: 'whatsapp-native',
+  QQ_NATIVE: 'qq-native',
+  LINE_NATIVE: 'line-native',
+} as const
+
+export type ParserFormatId = (typeof PARSER_FORMAT_IDS)[keyof typeof PARSER_FORMAT_IDS]
+
+export const LEGACY_PARSER_FORMAT_ID_ALIASES = {
+  'shuakami-qq-exporter': PARSER_FORMAT_IDS.QQ_SHUAKAMI,
+  'shuakami-qq-exporter-chunked': PARSER_FORMAT_IDS.QQ_SHUAKAMI_CHUNKED,
+  'ycccccccy-echotrace': PARSER_FORMAT_IDS.ECHOTRACE,
+  'tyrrrz-discord-exporter': PARSER_FORMAT_IDS.DISCORD_TYRRRZ,
+  'whatsapp-native-txt': PARSER_FORMAT_IDS.WHATSAPP_NATIVE,
+  'qq-native-txt': PARSER_FORMAT_IDS.QQ_NATIVE,
+  'line-native-txt': PARSER_FORMAT_IDS.LINE_NATIVE,
+  'google-chat-takeout': PARSER_FORMAT_IDS.GOOGLE_CHAT_NATIVE,
+} as const satisfies Record<string, ParserFormatId>
+
+export function normalizeParserFormatId(formatId: string): string {
+  return LEGACY_PARSER_FORMAT_ID_ALIASES[formatId as keyof typeof LEGACY_PARSER_FORMAT_ID_ALIASES] ?? formatId
+}
+
+export function isParserFormatId(formatId: string): formatId is ParserFormatId {
+  return Object.values(PARSER_FORMAT_IDS).some((candidate) => candidate === formatId)
+}
diff --git a/packages/parser/src/formats/chatlab-jsonl.ts b/packages/parser/src/formats/chatlab-jsonl.ts
index 6fc97229..1af7442a 100644
--- a/packages/parser/src/formats/chatlab-jsonl.ts
+++ b/packages/parser/src/formats/chatlab-jsonl.ts
@@ -19,6 +19,7 @@ import * as fs from 'fs'
 import * as readline from 'readline'
 import * as path from 'path'
 import { KNOWN_PLATFORMS, ChatType, MessageType } from '@openchatlab/shared-types'
+import { PARSER_FORMAT_IDS } from '../format-ids'
 import type {
   FormatFeature,
   FormatModule,
@@ -111,7 +112,7 @@ function parseLine(line: string): JsonlLine | null {
 // ==================== 特征定义 ====================
 
 export const feature: FormatFeature = {
-  id: 'chatlab-jsonl',
+  id: PARSER_FORMAT_IDS.CHATLAB_JSONL,
   name: 'ChatLab JSONL',
   platform: KNOWN_PLATFORMS.UNKNOWN,
   priority: 51, // 低优先级，让其他格式先匹配
diff --git a/packages/parser/src/formats/chatlab.ts b/packages/parser/src/formats/chatlab.ts
index 52558be6..131ebe01 100644
--- a/packages/parser/src/formats/chatlab.ts
+++ b/packages/parser/src/formats/chatlab.ts
@@ -14,6 +14,7 @@ import pickModule from 'stream-json/filters/Pick.js'
 import streamValuesModule from 'stream-json/streamers/StreamValues.js'
 import streamChain from 'stream-chain'
 import { KNOWN_PLATFORMS, ChatType } from '@openchatlab/shared-types'
+import { PARSER_FORMAT_IDS } from '../format-ids'
 import type {
   FormatFeature,
   FormatModule,
@@ -48,7 +49,7 @@ function extractNameFromFilePath(filePath: string): string {
 // ==================== 特征定义 ====================
 
 export const feature: FormatFeature = {
-  id: 'chatlab',
+  id: PARSER_FORMAT_IDS.CHATLAB,
   name: 'ChatLab JSON',
   platform: KNOWN_PLATFORMS.UNKNOWN, // ChatLab 格式可能包含多平台数据
   priority: 50, // 低优先级，让其他格式先匹配
diff --git a/packages/parser/src/formats/fixture.test.ts b/packages/parser/src/formats/fixture.test.ts
index 51acbec1..c0bcffca 100644
--- a/packages/parser/src/formats/fixture.test.ts
+++ b/packages/parser/src/formats/fixture.test.ts
@@ -65,7 +65,7 @@ const fixtures: ParserFixture[] = [
       '[图片]',
       '',
     ].join('\n'),
-    formatId: 'qq-native-txt',
+    formatId: 'qq-native',
     expected: {
       meta: { name: '测试 QQ 群', platform: KNOWN_PLATFORMS.QQ, type: ChatType.GROUP },
       memberIds: ['10001', '10002'],
@@ -190,7 +190,7 @@ const fixtures: ParserFixture[] = [
       '2024/01/02 03:06:07 P.M. - Bob: image omitted',
       '',
     ].join('\n'),
-    formatId: 'whatsapp-native-txt',
+    formatId: 'whatsapp-native',
     expected: {
       meta: { name: 'Alice', platform: KNOWN_PLATFORMS.WHATSAPP, type: ChatType.PRIVATE },
       memberIds: ['Alice', 'Bob'],
@@ -224,7 +224,7 @@ const fixtures: ParserFixture[] = [
       '[2026/7/9 02:28:37] Bob:Hi without sender-space',
       '',
     ].join('\n'),
-    formatId: 'whatsapp-native-txt',
+    formatId: 'whatsapp-native',
     expected: {
       meta: { name: 'Alice', platform: KNOWN_PLATFORMS.WHATSAPP, type: ChatType.PRIVATE },
       memberIds: ['Alice', 'Bob'],
@@ -261,7 +261,7 @@ const fixtures: ParserFixture[] = [
       '03:05\tBob\t[Sticker]',
       '',
     ].join('\n'),
-    formatId: 'line-native-txt',
+    formatId: 'line-native',
     expected: {
       meta: { name: 'Project Team', platform: KNOWN_PLATFORMS.LINE, type: ChatType.GROUP },
       memberIds: ['Alice', 'Bob'],
diff --git a/packages/parser/src/formats/google-chat-takeout.test.ts b/packages/parser/src/formats/google-chat-takeout.test.ts
index f1a7744f..354aff94 100644
--- a/packages/parser/src/formats/google-chat-takeout.test.ts
+++ b/packages/parser/src/formats/google-chat-takeout.test.ts
@@ -105,7 +105,7 @@ async function parseGoogleChatFixture(options: {
       'utf8'
     )
 
-    assert.equal(detectFormat(manifestPath)?.id, 'google-chat-takeout')
+    assert.equal(detectFormat(manifestPath)?.id, 'google-chat-native')
     return await parseFileSync(manifestPath)
   } finally {
     rmSync(dir, { recursive: true, force: true })
diff --git a/packages/parser/src/formats/google-chat-takeout.ts b/packages/parser/src/formats/google-chat-takeout.ts
index f0b5c9aa..28d060bb 100644
--- a/packages/parser/src/formats/google-chat-takeout.ts
+++ b/packages/parser/src/formats/google-chat-takeout.ts
@@ -12,6 +12,7 @@ import streamJson from 'stream-json'
 import pickModule from 'stream-json/filters/Pick.js'
 import streamValuesModule from 'stream-json/streamers/StreamValues.js'
 import { ChatType, KNOWN_PLATFORMS, MessageType } from '@openchatlab/shared-types'
+import { PARSER_FORMAT_IDS } from '../format-ids'
 import type {
   FormatFeature,
   FormatModule,
@@ -90,7 +91,7 @@ const ENGLISH_MONTHS = new Map([
 ])
 
 export const feature: FormatFeature = {
-  id: 'google-chat-takeout',
+  id: PARSER_FORMAT_IDS.GOOGLE_CHAT_NATIVE,
   name: 'Google Chat Takeout',
   platform: KNOWN_PLATFORMS.GOOGLE_CHAT,
   priority: 24,
diff --git a/packages/parser/src/formats/instagram-native.ts b/packages/parser/src/formats/instagram-native.ts
index fb098ce9..99501a47 100644
--- a/packages/parser/src/formats/instagram-native.ts
+++ b/packages/parser/src/formats/instagram-native.ts
@@ -18,6 +18,7 @@
 import * as fs from 'fs'
 import * as path from 'path'
 import { KNOWN_PLATFORMS, ChatType, MessageType } from '@openchatlab/shared-types'
+import { PARSER_FORMAT_IDS } from '../format-ids'
 import type {
   FormatFeature,
   FormatModule,
@@ -33,7 +34,7 @@ import { getFileSize, createProgress } from '../utils'
 // ==================== 特征定义 ====================
 
 export const feature: FormatFeature = {
-  id: 'instagram-native',
+  id: PARSER_FORMAT_IDS.INSTAGRAM_NATIVE,
   name: 'Instagram 官方导出',
   platform: KNOWN_PLATFORMS.INSTAGRAM,
   priority: 25,
diff --git a/packages/parser/src/formats/line-native-txt.ts b/packages/parser/src/formats/line-native-txt.ts
index a2580b34..ca40c76b 100644
--- a/packages/parser/src/formats/line-native-txt.ts
+++ b/packages/parser/src/formats/line-native-txt.ts
@@ -2,11 +2,12 @@ import * as fs from 'fs'
 import { KNOWN_PLATFORMS } from '@openchatlab/shared-types'
 
 import { LINE_FILENAME_SIGNATURES, LINE_HEAD_SIGNATURES, parseLineText } from '../browser/line'
+import { PARSER_FORMAT_IDS } from '../format-ids'
 import type { FormatFeature, FormatModule, ParseEvent, ParseOptions, Parser } from '../types'
 import { createProgress, getFileSize } from '../utils'
 
 export const feature: FormatFeature = {
-  id: 'line-native-txt',
+  id: PARSER_FORMAT_IDS.LINE_NATIVE,
   name: 'LINE 官方导出 TXT',
   platform: KNOWN_PLATFORMS.LINE,
   priority: 35,
diff --git a/packages/parser/src/formats/qq-native-txt.ts b/packages/parser/src/formats/qq-native-txt.ts
index f8a5089a..ce707546 100644
--- a/packages/parser/src/formats/qq-native-txt.ts
+++ b/packages/parser/src/formats/qq-native-txt.ts
@@ -3,11 +3,12 @@ import * as readline from 'readline'
 import { KNOWN_PLATFORMS } from '@openchatlab/shared-types'
 
 import { QQ_HEAD_SIGNATURES, QqTextAccumulator } from '../browser/qq'
+import { PARSER_FORMAT_IDS } from '../format-ids'
 import type { FormatFeature, FormatModule, ParseEvent, ParseOptions, Parser } from '../types'
 import { createProgress, getFileSize } from '../utils'
 
 export const feature: FormatFeature = {
-  id: 'qq-native-txt',
+  id: PARSER_FORMAT_IDS.QQ_NATIVE,
   name: 'QQ 官方导出 (TXT)',
   platform: KNOWN_PLATFORMS.QQ,
   priority: 30,
diff --git a/packages/parser/src/formats/shuakami-qq-exporter-chunked.test.ts b/packages/parser/src/formats/shuakami-qq-exporter-chunked.test.ts
index 6de679d4..ef37f268 100644
--- a/packages/parser/src/formats/shuakami-qq-exporter-chunked.test.ts
+++ b/packages/parser/src/formats/shuakami-qq-exporter-chunked.test.ts
@@ -61,7 +61,7 @@ describe('shuakami-qq-exporter chunked parser', () => {
           .join('\n')
       )
 
-      assert.equal(detectFormat(manifestPath)?.id, 'shuakami-qq-exporter-chunked')
+      assert.equal(detectFormat(manifestPath)?.id, 'qq-shuakami-chunked')
       assert.equal(findEntryFileInDirectory(root), manifestPath)
 
       const result = await parseFileSync(manifestPath)
diff --git a/packages/parser/src/formats/shuakami-qq-exporter-chunked.ts b/packages/parser/src/formats/shuakami-qq-exporter-chunked.ts
index 7dcc9cb4..fd8f1fb7 100644
--- a/packages/parser/src/formats/shuakami-qq-exporter-chunked.ts
+++ b/packages/parser/src/formats/shuakami-qq-exporter-chunked.ts
@@ -27,6 +27,7 @@ import * as fs from 'fs'
 import * as path from 'path'
 import * as readline from 'readline'
 import { KNOWN_PLATFORMS, ChatType, MessageType } from '@openchatlab/shared-types'
+import { PARSER_FORMAT_IDS } from '../format-ids'
 import type {
   FormatFeature,
   FormatModule,
@@ -42,7 +43,7 @@ import { createProgress, parseTimestamp, isValidYear } from '../utils'
 // ==================== 特征定义 ====================
 
 export const feature: FormatFeature = {
-  id: 'shuakami-qq-exporter-chunked',
+  id: PARSER_FORMAT_IDS.QQ_SHUAKAMI_CHUNKED,
   name: 'shuakami/qq-chat-exporter (chunked)',
   platform: KNOWN_PLATFORMS.QQ,
   priority: 5, // 比单文件版本优先级更高
diff --git a/packages/parser/src/formats/shuakami-qq-exporter.test.ts b/packages/parser/src/formats/shuakami-qq-exporter.test.ts
index 581b73e9..b1c6df0f 100644
--- a/packages/parser/src/formats/shuakami-qq-exporter.test.ts
+++ b/packages/parser/src/formats/shuakami-qq-exporter.test.ts
@@ -62,7 +62,7 @@ async function parseContent(content: string, filename = 'qce-export.json'): Prom
   try {
     const filePath = join(dir, filename)
     writeFileSync(filePath, content, 'utf-8')
-    assert.equal(detectFormat(filePath)?.id, 'shuakami-qq-exporter')
+    assert.equal(detectFormat(filePath)?.id, 'qq-shuakami')
     return await parseFileSync(filePath)
   } finally {
     rmSync(dir, { recursive: true, force: true })
diff --git a/packages/parser/src/formats/shuakami-qq-exporter.ts b/packages/parser/src/formats/shuakami-qq-exporter.ts
index 08bafc99..d1bb6f79 100644
--- a/packages/parser/src/formats/shuakami-qq-exporter.ts
+++ b/packages/parser/src/formats/shuakami-qq-exporter.ts
@@ -24,6 +24,7 @@ import pickModule from 'stream-json/filters/Pick.js'
 import streamValuesModule from 'stream-json/streamers/StreamValues.js'
 import streamChain from 'stream-chain'
 import { KNOWN_PLATFORMS, ChatType, MessageType } from '@openchatlab/shared-types'
+import { PARSER_FORMAT_IDS } from '../format-ids'
 import type {
   FormatFeature,
   FormatModule,
@@ -44,7 +45,7 @@ const { chain } = streamChain
 // ==================== 特征定义 ====================
 
 export const feature: FormatFeature = {
-  id: 'shuakami-qq-exporter',
+  id: PARSER_FORMAT_IDS.QQ_SHUAKAMI,
   name: 'shuakami/qq-chat-exporter',
   platform: KNOWN_PLATFORMS.QQ,
   priority: 10,
diff --git a/packages/parser/src/formats/telegram-native-single.ts b/packages/parser/src/formats/telegram-native-single.ts
index 46b44015..e7fe71b8 100644
--- a/packages/parser/src/formats/telegram-native-single.ts
+++ b/packages/parser/src/formats/telegram-native-single.ts
@@ -4,6 +4,7 @@ import streamJson from 'stream-json'
 import { ChatType, KNOWN_PLATFORMS } from '@openchatlab/shared-types'
 
 import { TELEGRAM_SINGLE_CHAT_TYPE_PATTERN, TELEGRAM_SINGLE_HEAD_SIGNATURES } from '../browser/telegram'
+import { PARSER_FORMAT_IDS } from '../format-ids'
 import type {
   FormatFeature,
   FormatModule,
@@ -26,7 +27,7 @@ interface JsonToken {
 }
 
 export const feature: FormatFeature = {
-  id: 'telegram-native-single',
+  id: PARSER_FORMAT_IDS.TELEGRAM_NATIVE_SINGLE,
   name: 'Telegram 单聊天导出 (JSON)',
   platform: KNOWN_PLATFORMS.TELEGRAM,
   priority: 23,
diff --git a/packages/parser/src/formats/telegram-native.ts b/packages/parser/src/formats/telegram-native.ts
index 327d7ada..be5e60ff 100644
--- a/packages/parser/src/formats/telegram-native.ts
+++ b/packages/parser/src/formats/telegram-native.ts
@@ -22,6 +22,7 @@ import pickModule from 'stream-json/filters/Pick.js'
 import streamValuesModule from 'stream-json/streamers/StreamValues.js'
 
 import { KNOWN_PLATFORMS, ChatType } from '@openchatlab/shared-types'
+import { PARSER_FORMAT_IDS } from '../format-ids'
 import type {
   FormatFeature,
   FormatModule,
@@ -60,7 +61,7 @@ export interface TelegramChatInfo {
 // ==================== 特征定义 ====================
 
 export const feature: FormatFeature = {
-  id: 'telegram-native',
+  id: PARSER_FORMAT_IDS.TELEGRAM_NATIVE,
   name: 'Telegram 官方导出 (JSON)',
   platform: KNOWN_PLATFORMS.TELEGRAM,
   priority: 22,
diff --git a/packages/parser/src/formats/tyrrrz-discord-exporter.ts b/packages/parser/src/formats/tyrrrz-discord-exporter.ts
index a0fee082..9fb9f21e 100644
--- a/packages/parser/src/formats/tyrrrz-discord-exporter.ts
+++ b/packages/parser/src/formats/tyrrrz-discord-exporter.ts
@@ -14,6 +14,7 @@ import pickModule from 'stream-json/filters/Pick.js'
 import streamValuesModule from 'stream-json/streamers/StreamValues.js'
 import streamChain from 'stream-chain'
 import { KNOWN_PLATFORMS, ChatType, MessageType, type MemberRole } from '@openchatlab/shared-types'
+import { PARSER_FORMAT_IDS } from '../format-ids'
 import type {
   FormatFeature,
   FormatModule,
@@ -230,7 +231,7 @@ function formatSticker(sticker: DiscordSticker): string {
 // ==================== 特征定义 ====================
 
 export const feature: FormatFeature = {
-  id: 'tyrrrz-discord-exporter',
+  id: PARSER_FORMAT_IDS.DISCORD_TYRRRZ,
   name: 'Tyrrrz/DiscordChatExporter',
   platform: KNOWN_PLATFORMS.DISCORD,
   priority: 20, // Discord 格式优先级
diff --git a/packages/parser/src/formats/weflow.ts b/packages/parser/src/formats/weflow.ts
index a724a69e..86d126e6 100644
--- a/packages/parser/src/formats/weflow.ts
+++ b/packages/parser/src/formats/weflow.ts
@@ -22,6 +22,7 @@ import pickModule from 'stream-json/filters/Pick.js'
 import streamValuesModule from 'stream-json/streamers/StreamValues.js'
 import streamChain from 'stream-chain'
 import { KNOWN_PLATFORMS, ChatType, MessageType } from '@openchatlab/shared-types'
+import { PARSER_FORMAT_IDS } from '../format-ids'
 import type {
   FormatFeature,
   FormatModule,
@@ -53,7 +54,7 @@ function extractNameFromFilePath(filePath: string): string {
 // ==================== 特征定义 ====================
 
 export const feature: FormatFeature = {
-  id: 'weflow',
+  id: PARSER_FORMAT_IDS.WEFLOW,
   name: 'WeFlow 导出',
   platform: KNOWN_PLATFORMS.WECHAT,
   priority: 15,
@@ -608,7 +609,7 @@ async function* parseWeFlow(options: ParseOptions): AsyncGenerator<ParseEvent, v
 
 import { withNativeWeflow } from '../native/weflow-native'
 
-// 导出解析函数供其他格式复用（如 ycccccccy-echotrace）
+// 导出解析函数供其他格式复用（如 echotrace）
 // parseWeFlowAccelerated：优先走 Rust 内核，native 不可用/失败时自动回退本文件的 TS 实现
 export { parseWeFlow }
 export const parseWeFlowAccelerated = withNativeWeflow(parseWeFlow)
diff --git a/packages/parser/src/formats/whatsapp-native-txt.ts b/packages/parser/src/formats/whatsapp-native-txt.ts
index 7f8d82a9..59a3e9ad 100644
--- a/packages/parser/src/formats/whatsapp-native-txt.ts
+++ b/packages/parser/src/formats/whatsapp-native-txt.ts
@@ -3,11 +3,12 @@ import * as readline from 'readline'
 import { KNOWN_PLATFORMS, MessageType } from '@openchatlab/shared-types'
 
 import { WHATSAPP_FILENAME_SIGNATURES, WHATSAPP_HEAD_SIGNATURES, WhatsAppTextAccumulator } from '../browser/whatsapp'
+import { PARSER_FORMAT_IDS } from '../format-ids'
 import type { FormatFeature, FormatModule, ParseEvent, ParseOptions, Parser } from '../types'
 import { createProgress, getFileSize } from '../utils'
 
 export const feature: FormatFeature = {
-  id: 'whatsapp-native-txt',
+  id: PARSER_FORMAT_IDS.WHATSAPP_NATIVE,
   name: 'WhatsApp 官方导出 (TXT)',
   platform: KNOWN_PLATFORMS.WHATSAPP,
   priority: 25,
diff --git a/packages/parser/src/formats/ycccccccy-echotrace.ts b/packages/parser/src/formats/ycccccccy-echotrace.ts
index bc71cb0c..d3b8213c 100644
--- a/packages/parser/src/formats/ycccccccy-echotrace.ts
+++ b/packages/parser/src/formats/ycccccccy-echotrace.ts
@@ -13,6 +13,7 @@
  */
 
 import { KNOWN_PLATFORMS } from '@openchatlab/shared-types'
+import { PARSER_FORMAT_IDS } from '../format-ids'
 import type { FormatFeature, FormatModule, Parser } from '../types'
 import { parseWeFlowAccelerated } from './weflow'
 import { weflowPreprocessor } from './weflow-preprocessor'
@@ -20,7 +21,7 @@ import { weflowPreprocessor } from './weflow-preprocessor'
 // ==================== 特征定义 ====================
 
 export const feature: FormatFeature = {
-  id: 'ycccccccy-echotrace',
+  id: PARSER_FORMAT_IDS.ECHOTRACE,
   name: 'ycccccccy/echotrace 导出',
   platform: KNOWN_PLATFORMS.WECHAT,
   priority: 16, // 比 WeFlow (15) 略低，优先检测 WeFlow
diff --git a/packages/parser/src/index.ts b/packages/parser/src/index.ts
index d4d77fdf..e71ae4cf 100644
--- a/packages/parser/src/index.ts
+++ b/packages/parser/src/index.ts
@@ -31,6 +31,13 @@ export {
   type ChatLabValidationStats,
 } from './chatlab-validator'
 export { rebaseChatLabDemoDocuments, type RebasedChatLabDemoDocuments } from './chatlab-demo-timeline'
+export {
+  PARSER_FORMAT_IDS,
+  LEGACY_PARSER_FORMAT_ID_ALIASES,
+  isParserFormatId,
+  normalizeParserFormatId,
+  type ParserFormatId,
+} from './format-ids'
 
 // ==================== 全局嗅探器实例 ====================
 
@@ -79,8 +86,7 @@ export function getSupportedFormats(): FormatFeature[] {
  * 用于手动指定格式时跳过嗅探
  */
 export function getFormatFeatureById(formatId: string): FormatFeature | null {
-  const all = sniffer.getSupportedFormats()
-  return all.find((f) => f.id === formatId) ?? null
+  return sniffer.getFeatureById(formatId)
 }
 
 /**
diff --git a/packages/parser/src/native/chatlab-native.ts b/packages/parser/src/native/chatlab-native.ts
index 18dbfee7..2788bfb4 100644
--- a/packages/parser/src/native/chatlab-native.ts
+++ b/packages/parser/src/native/chatlab-native.ts
@@ -51,7 +51,7 @@ function toParsedMember(member: NativeMember, fromHead: boolean): ParsedMember {
 }
 
 const chatlabAdapter: NativeFormatAdapter = {
-  formatId: 'chatlab',
+  kernelId: 'chatlab',
   label: 'ChatLab JSON',
 
   mapMeta(metaJson: unknown): ParsedMeta {
diff --git a/packages/parser/src/native/create-native-parser.test.ts b/packages/parser/src/native/create-native-parser.test.ts
index 1a64ce63..502e9111 100644
--- a/packages/parser/src/native/create-native-parser.test.ts
+++ b/packages/parser/src/native/create-native-parser.test.ts
@@ -19,7 +19,7 @@ test('falls back before data events when the native parser constructor rejects t
   const { createNativeFirstParser } = await import('./create-native-parser')
   const parser = createNativeFirstParser(
     {
-      formatId: 'shuakami-qq-exporter',
+      kernelId: 'shuakami-qq-exporter',
       label: 'shuakami/qq-chat-exporter',
       mapMeta() {
         throw new Error('native mapper must not run')
diff --git a/packages/parser/src/native/create-native-parser.ts b/packages/parser/src/native/create-native-parser.ts
index 07dbf473..c830b005 100644
--- a/packages/parser/src/native/create-native-parser.ts
+++ b/packages/parser/src/native/create-native-parser.ts
@@ -25,7 +25,7 @@ export type ParseGenerator = (options: ParseOptions) => AsyncGenerator<ParseEven
 
 export interface NativeFormatAdapter {
   /** Kernel id understood by the Rust NativeParser constructor. */
-  formatId: string
+  kernelId: string
   /** Human-readable format label used in import logs. */
   label: string
   /** Map the kernel's meta JSON (parsed) to the ParsedMeta event payload. */
@@ -127,7 +127,7 @@ export function createNativeFirstParser(
     let parser: NativeParser
     try {
       parser = new native.NativeParser(
-        adapter.formatId,
+        adapter.kernelId,
         options.filePath,
         options.formatOptions ? JSON.stringify(options.formatOptions) : undefined
       )
diff --git a/packages/parser/src/native/loader-format.test.ts b/packages/parser/src/native/loader-format.test.ts
index d2228cc5..a7405139 100644
--- a/packages/parser/src/native/loader-format.test.ts
+++ b/packages/parser/src/native/loader-format.test.ts
@@ -4,7 +4,9 @@ import test from 'node:test'
 test('probes kernel ids so an older loadable native binary is not treated as format-capable', async (t) => {
   class OlderNativeParser {
     constructor(formatId: string) {
-      if (formatId !== 'chatlab') throw new Error(`unsupported format: ${formatId}`)
+      if (formatId !== 'chatlab' && formatId !== 'shuakami-qq-exporter') {
+        throw new Error(`unsupported format: ${formatId}`)
+      }
     }
   }
 
@@ -14,7 +16,9 @@ test('probes kernel ids so an older loadable native binary is not treated as for
 
   const { isNativeFormatAvailable } = await import('./loader')
   assert.equal(isNativeFormatAvailable('chatlab'), true)
-  assert.equal(isNativeFormatAvailable('shuakami-qq-exporter'), false)
+  assert.equal(isNativeFormatAvailable('qq-shuakami'), true)
+  assert.equal(isNativeFormatAvailable('shuakami-qq-exporter'), true)
+  assert.equal(isNativeFormatAvailable('discord-tyrrrz'), false)
 
   const saved = process.env.CHATLAB_DISABLE_NATIVE_PERF
   try {
diff --git a/packages/parser/src/native/loader.test.ts b/packages/parser/src/native/loader.test.ts
index 7bd647ed..69ace25c 100644
--- a/packages/parser/src/native/loader.test.ts
+++ b/packages/parser/src/native/loader.test.ts
@@ -16,5 +16,5 @@ test('treats a loadable native module without NativeParser as unavailable', asyn
     disabled: false,
     error: 'Native parser module missing NativeParser export',
   })
-  assert.equal(isNativeFormatAvailable('shuakami-qq-exporter'), false)
+  assert.equal(isNativeFormatAvailable('qq-shuakami'), false)
 })
diff --git a/packages/parser/src/native/loader.ts b/packages/parser/src/native/loader.ts
index 021baac5..f3e35110 100644
--- a/packages/parser/src/native/loader.ts
+++ b/packages/parser/src/native/loader.ts
@@ -10,6 +10,7 @@
 import { createRequire } from 'node:module'
 
 import type { NativeParser } from '@openchatlab/parser-native'
+import { PARSER_FORMAT_IDS, normalizeParserFormatId } from '../format-ids'
 
 export interface NativeParserModule {
   NativeParser: typeof NativeParser
@@ -81,9 +82,16 @@ export function isNativeFormatAvailable(formatId: string): boolean {
   if (!module) return false
 
   try {
-    new module.NativeParser(formatId, '')
+    new module.NativeParser(resolveNativeKernelId(formatId), '')
     return true
   } catch {
     return false
   }
 }
+
+function resolveNativeKernelId(formatId: string): string {
+  const canonicalId = normalizeParserFormatId(formatId)
+  if (canonicalId === PARSER_FORMAT_IDS.QQ_SHUAKAMI) return 'shuakami-qq-exporter'
+  if (canonicalId === PARSER_FORMAT_IDS.ECHOTRACE) return 'weflow'
+  return canonicalId
+}
diff --git a/packages/parser/src/native/shuakami-qq-native.test.ts b/packages/parser/src/native/shuakami-qq-native.test.ts
index 48fa9ff0..9b564939 100644
--- a/packages/parser/src/native/shuakami-qq-native.test.ts
+++ b/packages/parser/src/native/shuakami-qq-native.test.ts
@@ -178,7 +178,7 @@ const nativeAvailable = (() => {
   const saved = process.env[ENV_KEY]
   delete process.env[ENV_KEY]
   try {
-    return isNativeFormatAvailable('shuakami-qq-exporter')
+    return isNativeFormatAvailable('qq-shuakami')
   } finally {
     if (saved !== undefined) process.env[ENV_KEY] = saved
   }
@@ -254,7 +254,7 @@ describe('shuakami/qq-chat-exporter native parser', { skip: !nativeAvailable &&
     try {
       writeFileSync(filePath, makeFullFixture(), 'utf-8')
       process.env[ENV_KEY] = '1'
-      assert.equal(isNativeFormatAvailable('shuakami-qq-exporter'), false)
+      assert.equal(isNativeFormatAvailable('qq-shuakami'), false)
       const result = await collect(parseShuakamiQqV4Accelerated, filePath)
       assert.equal(result.messages.length, 24)
       assert.equal(
diff --git a/packages/parser/src/native/shuakami-qq-native.ts b/packages/parser/src/native/shuakami-qq-native.ts
index 74addd12..5794200f 100644
--- a/packages/parser/src/native/shuakami-qq-native.ts
+++ b/packages/parser/src/native/shuakami-qq-native.ts
@@ -15,7 +15,7 @@ interface ShuakamiQqMetaJson {
 }
 
 export const shuakamiQqAdapter: NativeFormatAdapter = {
-  formatId: 'shuakami-qq-exporter',
+  kernelId: 'shuakami-qq-exporter',
   label: 'shuakami/qq-chat-exporter',
 
   mapMeta(metaJson: unknown): ParsedMeta {
diff --git a/packages/parser/src/native/weflow-native.test.ts b/packages/parser/src/native/weflow-native.test.ts
index f96631b4..0d146603 100644
--- a/packages/parser/src/native/weflow-native.test.ts
+++ b/packages/parser/src/native/weflow-native.test.ts
@@ -240,11 +240,7 @@ describe('weflow native parser parity', { skip: !nativeAvailable() && 'native mo
         },
       ],
     }
-    const { nativeResult, tsResult } = await parseBothWays(
-      'echo.json',
-      JSON.stringify(echotrace),
-      'ycccccccy-echotrace'
-    )
+    const { nativeResult, tsResult } = await parseBothWays('echo.json', JSON.stringify(echotrace), 'echotrace')
     assertParity(nativeResult, tsResult)
     assert.equal(nativeResult.messages.length, 1)
   })
diff --git a/packages/parser/src/native/weflow-native.ts b/packages/parser/src/native/weflow-native.ts
index 81503e35..75d607e6 100644
--- a/packages/parser/src/native/weflow-native.ts
+++ b/packages/parser/src/native/weflow-native.ts
@@ -2,7 +2,7 @@
  * WeFlow adapter for the unified native-first wrapper.
  *
  * Payload shapes are identical to the pure-TS parser in formats/weflow.ts
- * (verified by parity tests). Shared by the ycccccccy-echotrace format module
+ * (verified by parity tests). Shared by the echotrace format module
  * (same data structure, same Rust kernel).
  */
 
@@ -21,7 +21,7 @@ interface WeflowMetaJson {
 }
 
 const weflowAdapter: NativeFormatAdapter = {
-  formatId: 'weflow',
+  kernelId: 'weflow',
   label: 'WeFlow export',
 
   mapMeta(metaJson: unknown): ParsedMeta {
@@ -62,7 +62,7 @@ const weflowAdapter: NativeFormatAdapter = {
 
 /**
  * Wrap a TS parse generator with native acceleration. Used by the WeFlow and
- * ycccccccy-echotrace format modules (they share the same data structure).
+ * echotrace format modules (they share the same data structure).
  */
 export function withNativeWeflow(fallback: ParseGenerator): ParseGenerator {
   return createNativeFirstParser(weflowAdapter, fallback)
diff --git a/packages/parser/src/sniffer.ts b/packages/parser/src/sniffer.ts
index d7b5bb19..d84c523f 100644
--- a/packages/parser/src/sniffer.ts
+++ b/packages/parser/src/sniffer.ts
@@ -5,6 +5,7 @@
 
 import * as fs from 'fs'
 import * as path from 'path'
+import { normalizeParserFormatId } from './format-ids'
 import type { FormatFeature, FormatModule, Parser } from './types'
 
 /** 文件头检测大小 (64KB) - 考虑到现代聊天记录文件可能包含 base64 头像等大数据 */
@@ -172,10 +173,19 @@ export class FormatSniffer {
    * 根据格式 ID 获取解析器
    */
   getParserById(formatId: string): Parser | null {
-    const module = this.formats.find((m) => m.feature.id === formatId)
+    const canonicalId = normalizeParserFormatId(formatId)
+    const module = this.formats.find((m) => m.feature.id === canonicalId)
     return module?.parser || null
   }
 
+  /**
+   * Resolve canonical and released legacy format IDs to one canonical feature.
+   */
+  getFeatureById(formatId: string): FormatFeature | null {
+    const canonicalId = normalizeParserFormatId(formatId)
+    return this.formats.find((module) => module.feature.id === canonicalId)?.feature ?? null
+  }
+
   /**
    * 获取所有支持的格式
    */
diff --git a/packages/parser/src/types.ts b/packages/parser/src/types.ts
index 444c544c..df763027 100644
--- a/packages/parser/src/types.ts
+++ b/packages/parser/src/types.ts
@@ -4,6 +4,7 @@
  */
 
 import type { ChatPlatform, ChatType, ParsedMember, ParsedMessage } from '@openchatlab/shared-types'
+import type { ParserFormatId } from './format-ids'
 
 // ==================== 标准层：统一输出结构 ====================
 
@@ -83,7 +84,7 @@ export interface FormatSignatures {
  */
 export interface FormatFeature {
   /** 唯一标识符 */
-  id: string
+  id: ParserFormatId
   /** 显示名称 */
   name: string
   /** 平台 */
diff --git a/packages/web-runtime/scripts/bench-import.mts b/packages/web-runtime/scripts/bench-import.mts
index 053d201e..d84547a1 100644
--- a/packages/web-runtime/scripts/bench-import.mts
+++ b/packages/web-runtime/scripts/bench-import.mts
@@ -211,7 +211,7 @@ function createWhatsAppFixture(): BenchmarkFixture {
   const blob = new Blob([lines.join('\n')], { type: 'text/plain' })
   return {
     label: 'WhatsApp TXT',
-    formatId: 'whatsapp-native-txt',
+    formatId: 'whatsapp-native',
     source: blobSource('WhatsApp benchmark.txt', blob),
     firstContent: 'fixture-message-0',
     lastContent: `fixture-message-${MESSAGE_COUNT - 1}`,
@@ -233,7 +233,7 @@ function createLineFixture(): BenchmarkFixture {
   const blob = new Blob([lines.join('\n')], { type: 'text/plain' })
   return {
     label: 'LINE TXT',
-    formatId: 'line-native-txt',
+    formatId: 'line-native',
     source: blobSource('[LINE] Benchmark Team.txt', blob),
     firstContent: 'fixture-message-0',
     lastContent: `fixture-message-${MESSAGE_COUNT - 1}`,
@@ -255,7 +255,7 @@ function createQqFixture(): BenchmarkFixture {
   const blob = new Blob([lines.join('\n')], { type: 'text/plain' })
   return {
     label: 'QQ TXT',
-    formatId: 'qq-native-txt',
+    formatId: 'qq-native',
     source: blobSource('qq-benchmark.txt', blob),
     firstContent: 'fixture-message-0',
     lastContent: `fixture-message-${MESSAGE_COUNT - 1}`,
diff --git a/packages/web-runtime/src/import/browser-parser.ts b/packages/web-runtime/src/import/browser-parser.ts
index b7b5ba61..32a5a311 100644
--- a/packages/web-runtime/src/import/browser-parser.ts
+++ b/packages/web-runtime/src/import/browser-parser.ts
@@ -1,4 +1,5 @@
 import {
+  PARSER_FORMAT_IDS,
   detectLineText,
   detectQqText,
   detectTelegramMultiChatJson,
@@ -12,6 +13,7 @@ import {
   parseWhatsAppText,
   parseWeFlowJson,
   scanTelegramChatsJson,
+  normalizeParserFormatId,
   type TelegramChatInfo,
 } from '@openchatlab/parser/browser'
 
@@ -28,12 +30,12 @@ import { parseWithWasm, type BrowserImportLogEvent, type BrowserWasmParserLoader
 
 export type BrowserImportFormatId =
   | ChatLabBrowserFormatId
-  | 'whatsapp-native-txt'
-  | 'line-native-txt'
-  | 'qq-native-txt'
-  | 'telegram-native'
-  | 'telegram-native-single'
-  | 'weflow'
+  | typeof PARSER_FORMAT_IDS.WHATSAPP_NATIVE
+  | typeof PARSER_FORMAT_IDS.LINE_NATIVE
+  | typeof PARSER_FORMAT_IDS.QQ_NATIVE
+  | typeof PARSER_FORMAT_IDS.TELEGRAM_NATIVE
+  | typeof PARSER_FORMAT_IDS.TELEGRAM_NATIVE_SINGLE
+  | typeof PARSER_FORMAT_IDS.WEFLOW
 
 export interface ParseBrowserSourceOptions {
   formatId?: BrowserImportFormatId
@@ -51,18 +53,35 @@ export interface BrowserImportParseResult extends Omit<BrowserChatParseResult, '
 
 const HEAD_BYTES = 64 * 1024
 
+const BROWSER_IMPORT_FORMAT_IDS = new Set<string>([
+  PARSER_FORMAT_IDS.CHATLAB,
+  PARSER_FORMAT_IDS.CHATLAB_JSONL,
+  PARSER_FORMAT_IDS.WEFLOW,
+  PARSER_FORMAT_IDS.WHATSAPP_NATIVE,
+  PARSER_FORMAT_IDS.LINE_NATIVE,
+  PARSER_FORMAT_IDS.QQ_NATIVE,
+  PARSER_FORMAT_IDS.TELEGRAM_NATIVE,
+  PARSER_FORMAT_IDS.TELEGRAM_NATIVE_SINGLE,
+])
+
+export function normalizeBrowserImportFormatId(formatId: string | undefined): BrowserImportFormatId | undefined {
+  if (!formatId) return undefined
+  const canonicalId = normalizeParserFormatId(formatId)
+  return BROWSER_IMPORT_FORMAT_IDS.has(canonicalId) ? (canonicalId as BrowserImportFormatId) : undefined
+}
+
 export async function detectBrowserImportFormat(source: BrowserParseSource): Promise<BrowserImportFormatId | null> {
   if (source.name.toLowerCase().endsWith('.txt')) {
     const head = await source.slice(0, HEAD_BYTES).text()
-    if (detectWhatsAppText(head, source.name)) return 'whatsapp-native-txt'
-    if (detectQqText(head, source.name)) return 'qq-native-txt'
-    return detectLineText(head, source.name) ? 'line-native-txt' : null
+    if (detectWhatsAppText(head, source.name)) return PARSER_FORMAT_IDS.WHATSAPP_NATIVE
+    if (detectQqText(head, source.name)) return PARSER_FORMAT_IDS.QQ_NATIVE
+    return detectLineText(head, source.name) ? PARSER_FORMAT_IDS.LINE_NATIVE : null
   }
   if (source.name.toLowerCase().endsWith('.json')) {
     const head = await source.slice(0, HEAD_BYTES).text()
-    if (detectWeFlowJson(head, source.name)) return 'weflow'
-    if (detectTelegramMultiChatJson(head, source.name)) return 'telegram-native'
-    if (detectTelegramSingleJson(head, source.name)) return 'telegram-native-single'
+    if (detectWeFlowJson(head, source.name)) return PARSER_FORMAT_IDS.WEFLOW
+    if (detectTelegramMultiChatJson(head, source.name)) return PARSER_FORMAT_IDS.TELEGRAM_NATIVE
+    if (detectTelegramSingleJson(head, source.name)) return PARSER_FORMAT_IDS.TELEGRAM_NATIVE_SINGLE
   }
   return detectChatLabFormat(source)
 }
@@ -72,7 +91,7 @@ export async function scanBrowserMultiChatSource(
   options: Pick<ParseBrowserSourceOptions, 'checkCancelled' | 'yieldEvery'> = {}
 ): Promise<TelegramChatInfo[]> {
   const formatId = await detectBrowserImportFormat(source)
-  if (formatId !== 'telegram-native') {
+  if (formatId !== PARSER_FORMAT_IDS.TELEGRAM_NATIVE) {
     throw new WebRuntimeError('NOT_MULTI_CHAT_FORMAT', 'The selected file is not a supported multi-chat export')
   }
   options.checkCancelled?.()
@@ -85,7 +104,9 @@ export async function parseBrowserImportSource(
   source: BrowserParseSource,
   options: ParseBrowserSourceOptions = {}
 ): Promise<BrowserImportParseResult> {
-  const formatId = options.formatId ?? (await detectBrowserImportFormat(source))
+  const formatId = options.formatId
+    ? normalizeBrowserImportFormatId(options.formatId)
+    : await detectBrowserImportFormat(source)
   if (!formatId) {
     throw new WebRuntimeError(
       'UNSUPPORTED_IMPORT_FORMAT',
@@ -93,7 +114,7 @@ export async function parseBrowserImportSource(
     )
   }
 
-  if (formatId === 'chatlab' || formatId === 'weflow') {
+  if (formatId === PARSER_FORMAT_IDS.CHATLAB || formatId === PARSER_FORMAT_IDS.WEFLOW) {
     const wasmResult = await parseWithWasm(source, formatId, {
       checkCancelled: options.checkCancelled,
       onProgress: options.onProgress,
@@ -103,7 +124,7 @@ export async function parseBrowserImportSource(
     if (wasmResult) return wasmResult
   }
 
-  if (formatId === 'whatsapp-native-txt') {
+  if (formatId === PARSER_FORMAT_IDS.WHATSAPP_NATIVE) {
     options.checkCancelled?.()
     const content = await source.text()
     options.checkCancelled?.()
@@ -120,7 +141,7 @@ export async function parseBrowserImportSource(
     }
   }
 
-  if (formatId === 'weflow') {
+  if (formatId === PARSER_FORMAT_IDS.WEFLOW) {
     options.checkCancelled?.()
     const content = await source.text()
     options.checkCancelled?.()
@@ -137,7 +158,7 @@ export async function parseBrowserImportSource(
     }
   }
 
-  if (formatId === 'line-native-txt') {
+  if (formatId === PARSER_FORMAT_IDS.LINE_NATIVE) {
     options.checkCancelled?.()
     const content = await source.text()
     options.checkCancelled?.()
@@ -154,7 +175,7 @@ export async function parseBrowserImportSource(
     }
   }
 
-  if (formatId === 'qq-native-txt') {
+  if (formatId === PARSER_FORMAT_IDS.QQ_NATIVE) {
     options.checkCancelled?.()
     const content = await source.text()
     options.checkCancelled?.()
@@ -171,7 +192,7 @@ export async function parseBrowserImportSource(
     }
   }
 
-  if (formatId === 'telegram-native-single') {
+  if (formatId === PARSER_FORMAT_IDS.TELEGRAM_NATIVE_SINGLE) {
     options.checkCancelled?.()
     const content = await source.text()
     options.checkCancelled?.()
@@ -188,7 +209,7 @@ export async function parseBrowserImportSource(
     }
   }
 
-  if (formatId === 'telegram-native') {
+  if (formatId === PARSER_FORMAT_IDS.TELEGRAM_NATIVE) {
     if (options.chatIndex === undefined) {
       throw new WebRuntimeError('MULTI_CHAT_SELECTION_REQUIRED', 'A Telegram chat index is required for import')
     }
diff --git a/packages/web-runtime/src/import/session-runtime.test.ts b/packages/web-runtime/src/import/session-runtime.test.ts
index c944ebeb..df61c917 100644
--- a/packages/web-runtime/src/import/session-runtime.test.ts
+++ b/packages/web-runtime/src/import/session-runtime.test.ts
@@ -307,7 +307,7 @@ describe('BrowserSessionRuntime', () => {
 
     assert.deepEqual(result, {
       sessionId: 'whatsapp-system-participant',
-      formatId: 'whatsapp-native-txt',
+      formatId: 'whatsapp-native',
       messageCount: 1,
       memberCount: 1,
       skippedCount: 0,
@@ -351,11 +351,11 @@ describe('BrowserSessionRuntime', () => {
       ].join('\n')
     )
 
-    assert.equal(await runtime.detectFormat(fixture), 'whatsapp-native-txt')
+    assert.equal(await runtime.detectFormat(fixture), 'whatsapp-native')
     assert.deepEqual(
-      runtime.getSupportedFormats().find((format) => format.id === 'whatsapp-native-txt'),
+      runtime.getSupportedFormats().find((format) => format.id === 'whatsapp-native'),
       {
-        id: 'whatsapp-native-txt',
+        id: 'whatsapp-native',
         name: 'WhatsApp TXT',
         platform: 'whatsapp',
         extensions: ['.txt'],
@@ -366,7 +366,7 @@ describe('BrowserSessionRuntime', () => {
 
     assert.deepEqual(result, {
       sessionId: 'whatsapp-session',
-      formatId: 'whatsapp-native-txt',
+      formatId: 'whatsapp-native',
       messageCount: 3,
       memberCount: 3,
       skippedCount: 0,
@@ -384,7 +384,7 @@ describe('BrowserSessionRuntime', () => {
         groupAvatar: null,
         ownerId: null,
         lastMessageTs: Math.floor(new Date('2024-01-02T03:06:00').getTime() / 1000),
-        formatId: 'whatsapp-native-txt',
+        formatId: 'whatsapp-native',
       },
     ])
     const sessionDb = database.getDatabase(sessionDatabaseFilename('whatsapp-session'))
@@ -514,11 +514,11 @@ describe('BrowserSessionRuntime', () => {
       ].join('\n')
     )
 
-    assert.equal(await runtime.detectFormat(fixture), 'line-native-txt')
+    assert.equal(await runtime.detectFormat(fixture), 'line-native')
     assert.deepEqual(
-      runtime.getSupportedFormats().find((format) => format.id === 'line-native-txt'),
+      runtime.getSupportedFormats().find((format) => format.id === 'line-native'),
       {
-        id: 'line-native-txt',
+        id: 'line-native',
         name: 'LINE TXT',
         platform: 'line',
         extensions: ['.txt'],
@@ -529,7 +529,7 @@ describe('BrowserSessionRuntime', () => {
 
     assert.deepEqual(result, {
       sessionId: 'line-session',
-      formatId: 'line-native-txt',
+      formatId: 'line-native',
       messageCount: 3,
       memberCount: 3,
       skippedCount: 0,
@@ -541,7 +541,7 @@ describe('BrowserSessionRuntime', () => {
         type: session.type,
         formatId: session.formatId,
       })),
-      [{ name: 'Project Team', platform: 'line', type: 'group', formatId: 'line-native-txt' }]
+      [{ name: 'Project Team', platform: 'line', type: 'group', formatId: 'line-native' }]
     )
     const sessionDb = database.getDatabase(sessionDatabaseFilename('line-session'))
     assert.deepEqual(sessionDb?.prepare('SELECT sender_account_name, type, content FROM message ORDER BY id').all(), [
@@ -572,11 +572,11 @@ describe('BrowserSessionRuntime', () => {
       ].join('\n')
     )
 
-    assert.equal(await runtime.detectFormat(fixture), 'qq-native-txt')
+    assert.equal(await runtime.detectFormat(fixture), 'qq-native')
     assert.deepEqual(
-      runtime.getSupportedFormats().find((format) => format.id === 'qq-native-txt'),
+      runtime.getSupportedFormats().find((format) => format.id === 'qq-native'),
       {
-        id: 'qq-native-txt',
+        id: 'qq-native',
         name: 'QQ TXT',
         platform: 'qq',
         extensions: ['.txt'],
@@ -587,7 +587,7 @@ describe('BrowserSessionRuntime', () => {
 
     assert.deepEqual(result, {
       sessionId: 'qq-session',
-      formatId: 'qq-native-txt',
+      formatId: 'qq-native',
       messageCount: 2,
       memberCount: 2,
       skippedCount: 0,
@@ -599,7 +599,7 @@ describe('BrowserSessionRuntime', () => {
         type: session.type,
         formatId: session.formatId,
       })),
-      [{ name: 'Project Team', platform: 'qq', type: 'group', formatId: 'qq-native-txt' }]
+      [{ name: 'Project Team', platform: 'qq', type: 'group', formatId: 'qq-native' }]
     )
     const sessionDb = database.getDatabase(sessionDatabaseFilename('qq-session'))
     assert.deepEqual(sessionDb?.prepare('SELECT sender_account_name, type, content FROM message ORDER BY id').all(), [
diff --git a/packages/web-runtime/src/import/session-runtime.ts b/packages/web-runtime/src/import/session-runtime.ts
index 72de4d29..6ef71b97 100644
--- a/packages/web-runtime/src/import/session-runtime.ts
+++ b/packages/web-runtime/src/import/session-runtime.ts
@@ -47,6 +47,7 @@ import {
   type WordFrequencyResult,
   type YearlyActivity,
 } from '@openchatlab/core'
+import { PARSER_FORMAT_IDS } from '@openchatlab/parser/browser'
 import { WebRuntimeError } from '../runtime-error'
 import type { WorkspaceDatabasePort, WorkspaceDatabaseStage } from '../storage/workspace-database'
 import {
@@ -120,18 +121,18 @@ const SUPPORTED_FORMATS: BrowserImportFormatInfo[] = [
   { id: 'chatlab', name: 'ChatLab JSON', platform: 'unknown', extensions: ['.json'] },
   { id: 'chatlab-jsonl', name: 'ChatLab JSONL', platform: 'unknown', extensions: ['.jsonl'] },
   { id: 'weflow', name: 'WeFlow JSON', platform: 'weixin', extensions: ['.json'] },
-  { id: 'whatsapp-native-txt', name: 'WhatsApp TXT', platform: 'whatsapp', extensions: ['.txt'] },
-  { id: 'line-native-txt', name: 'LINE TXT', platform: 'line', extensions: ['.txt'] },
-  { id: 'qq-native-txt', name: 'QQ TXT', platform: 'qq', extensions: ['.txt'] },
+  { id: PARSER_FORMAT_IDS.WHATSAPP_NATIVE, name: 'WhatsApp TXT', platform: 'whatsapp', extensions: ['.txt'] },
+  { id: PARSER_FORMAT_IDS.LINE_NATIVE, name: 'LINE TXT', platform: 'line', extensions: ['.txt'] },
+  { id: PARSER_FORMAT_IDS.QQ_NATIVE, name: 'QQ TXT', platform: 'qq', extensions: ['.txt'] },
   {
-    id: 'telegram-native',
+    id: PARSER_FORMAT_IDS.TELEGRAM_NATIVE,
     name: 'Telegram JSON',
     platform: 'telegram',
     extensions: ['.json'],
     multiChat: true,
   },
   {
-    id: 'telegram-native-single',
+    id: PARSER_FORMAT_IDS.TELEGRAM_NATIVE_SINGLE,
     name: 'Telegram JSON',
     platform: 'telegram',
     extensions: ['.json'],
diff --git a/packages/web-runtime/src/index.ts b/packages/web-runtime/src/index.ts
index a8cc4f9b..11ebc5f3 100644
--- a/packages/web-runtime/src/index.ts
+++ b/packages/web-runtime/src/index.ts
@@ -14,7 +14,11 @@ export type {
   WebRuntimeTaskResult,
   WebRuntimeTaskType,
 } from './rpc/protocol'
-export type { BrowserImportFormatId, BrowserParseSource } from './import/browser-parser'
+export {
+  normalizeBrowserImportFormatId,
+  type BrowserImportFormatId,
+  type BrowserParseSource,
+} from './import/browser-parser'
 export type { BrowserSessionCatalogItem } from './import/session-catalog'
 export type {
   BrowserImportFormatInfo,
diff --git a/src/services/import/browser.test.ts b/src/services/import/browser.test.ts
index 49fe5f12..6055786e 100644
--- a/src/services/import/browser.test.ts
+++ b/src/services/import/browser.test.ts
@@ -295,7 +295,7 @@ describe('BrowserImportAdapter', () => {
     assert.deepEqual(deletedSessionIds, ['session-1'])
   })
 
-  it('forwards browser-safe format identifiers to the worker runtime', async () => {
+  it('normalizes released browser format aliases before forwarding them to the worker runtime', async () => {
     const requestedFormats: string[] = []
     const rpc = {
       async request<T extends WebRuntimeTaskType>(
@@ -347,9 +347,9 @@ describe('BrowserImportAdapter', () => {
     assert.equal(telegram.success, true)
     assert.deepEqual(requestedFormats, [
       'weflow',
-      'whatsapp-native-txt',
-      'line-native-txt',
-      'qq-native-txt',
+      'whatsapp-native',
+      'line-native',
+      'qq-native',
       'telegram-native-single',
     ])
   })
diff --git a/src/services/import/browser.ts b/src/services/import/browser.ts
index f159f71b..3acae008 100644
--- a/src/services/import/browser.ts
+++ b/src/services/import/browser.ts
@@ -1,4 +1,9 @@
-import type { BrowserImportFormatId, BrowserParseSource, RpcProgressPayload } from '@openchatlab/web-runtime'
+import {
+  normalizeBrowserImportFormatId,
+  type BrowserImportFormatId,
+  type BrowserParseSource,
+  type RpcProgressPayload,
+} from '@openchatlab/web-runtime'
 import { rebaseChatLabDemoDocuments } from '@openchatlab/parser/browser'
 import { reportRuntimeLog } from '@/services/log-report'
 import type { BrowserRuntimeRpcPort } from '../browser-runtime/types'
@@ -38,7 +43,7 @@ export class BrowserImportAdapter implements ImportAdapter {
     if (typeof file === 'string') return { success: false, error: 'File path import is not available in Web WASM' }
     if (this.activeImport) return { success: false, error: 'Another Web WASM import is already running' }
 
-    const formatId = normalizeFormatId(options?.formatId)
+    const formatId = normalizeBrowserImportFormatId(options?.formatId)
     if (options?.formatId && !formatId) {
       return { success: false, error: `Unsupported Web WASM import format: ${options.formatId}` }
     }
@@ -281,19 +286,6 @@ function mapImportProgress(progress: RpcProgressPayload): ImportProgress {
   return mapped
 }
 
-function normalizeFormatId(formatId: string | undefined): BrowserImportFormatId | undefined {
-  return formatId === 'chatlab' ||
-    formatId === 'chatlab-jsonl' ||
-    formatId === 'weflow' ||
-    formatId === 'whatsapp-native-txt' ||
-    formatId === 'line-native-txt' ||
-    formatId === 'qq-native-txt' ||
-    formatId === 'telegram-native' ||
-    formatId === 'telegram-native-single'
-    ? formatId
-    : undefined
-}
-
 function unsupported<T>(capability: string): Promise<T> {
   return Promise.reject(new Error(`${capability} is not available in Web WASM`))
 }
diff --git a/src/services/import/importSourceAdapters.test.ts b/src/services/import/importSourceAdapters.test.ts
index 866c7aed..dd1ffecb 100644
--- a/src/services/import/importSourceAdapters.test.ts
+++ b/src/services/import/importSourceAdapters.test.ts
@@ -134,7 +134,7 @@ describe('archive import source adapters', () => {
               success: true,
               source: {
                 sourceId: 'source-1',
-                formatId: 'google-chat-takeout',
+                formatId: 'google-chat-native',
                 platform: 'google-chat',
                 chats: [],
                 expiresAt: 123,
@@ -184,7 +184,7 @@ describe('archive import source adapters', () => {
             success: true,
             source: {
               sourceId: 'source-2',
-              formatId: 'google-chat-takeout',
+              formatId: 'google-chat-native',
               platform: 'google-chat',
               chats: [],
               expiresAt: 456,