diff --git a/locales/en-US.yml b/locales/en-US.yml
index c1e39778b..4d25b8e52 100644
--- a/locales/en-US.yml
+++ b/locales/en-US.yml
@@ -2472,3 +2472,8 @@ _dataSaver:
   _code:
     title: "Code highlighting"
     description: "If code highlighting notations are used in MFM, etc., they will not load until tapped. Syntax highlighting requires downloading the highlight definition files for each programming language. Therefore, disabling the automatic loading of these files is expected to reduce the amount of communication data."
+
+_ocr:
+  button: OCR
+  existingWarning: Existing caption will be overwritten
+  dataWarning: OCR may require additional downloads
diff --git a/locales/index.d.ts b/locales/index.d.ts
index dd2f34a69..4f7999fd5 100644
--- a/locales/index.d.ts
+++ b/locales/index.d.ts
@@ -2648,6 +2648,115 @@ export interface Locale {
             "description": string;
         };
     };
+    "_ocr": {
+        "button": string;
+        "existingWarning": string;
+        "dataWarning": string;
+        "languages": {
+            "afr": string;
+            "amh": string;
+            "ara": string;
+            "asm": string;
+            "aze": string;
+            "aze_cyrl": string;
+            "bel": string;
+            "ben": string;
+            "bod": string;
+            "bos": string;
+            "bul": string;
+            "cat": string;
+            "ceb": string;
+            "ces": string;
+            "chi_sim": string;
+            "chi_tra": string;
+            "chr": string;
+            "cym": string;
+            "dan": string;
+            "deu": string;
+            "dzo": string;
+            "ell": string;
+            "eng": string;
+            "enm": string;
+            "epo": string;
+            "est": string;
+            "eus": string;
+            "fas": string;
+            "fin": string;
+            "fra": string;
+            "frk": string;
+            "frm": string;
+            "gle": string;
+            "glg": string;
+            "grc": string;
+            "guj": string;
+            "hat": string;
+            "heb": string;
+            "hin": string;
+            "hrv": string;
+            "hun": string;
+            "iku": string;
+            "ind": string;
+            "isl": string;
+            "ita": string;
+            "ita_old": string;
+            "jav": string;
+            "jpn": string;
+            "kan": string;
+            "kat": string;
+            "kat_old": string;
+            "kaz": string;
+            "khm": string;
+            "kir": string;
+            "kor": string;
+            "kur": string;
+            "lao": string;
+            "lat": string;
+            "lav": string;
+            "lit": string;
+            "mal": string;
+            "mar": string;
+            "mkd": string;
+            "mlt": string;
+            "msa": string;
+            "mya": string;
+            "nep": string;
+            "nld": string;
+            "nor": string;
+            "ori": string;
+            "pan": string;
+            "pol": string;
+            "por": string;
+            "pus": string;
+            "ron": string;
+            "rus": string;
+            "san": string;
+            "sin": string;
+            "slk": string;
+            "slv": string;
+            "spa": string;
+            "spa_old": string;
+            "sqi": string;
+            "srp": string;
+            "srp_latn": string;
+            "swa": string;
+            "swe": string;
+            "syr": string;
+            "tam": string;
+            "tel": string;
+            "tgk": string;
+            "tgl": string;
+            "tha": string;
+            "tir": string;
+            "tur": string;
+            "uig": string;
+            "ukr": string;
+            "urd": string;
+            "uzb": string;
+            "uzb_cyrl": string;
+            "vie": string;
+            "yid": string;
+        };
+    };
 }
 declare const locales: {
     [lang: string]: Locale;
diff --git a/locales/ja-JP.yml b/locales/ja-JP.yml
index b632fbad6..5baf5b2e0 100644
--- a/locales/ja-JP.yml
+++ b/locales/ja-JP.yml
@@ -2516,7 +2516,7 @@ _dataRequest:
   warn: "データのリクエストは3日ごとにしかできない。"
   text: "データのダウンロードが完了すると、このアカウントに登録されているEメールアドレスにEメールが送信されます。"
   button: "リクエスト"
-  
+
 _dataSaver:
   _media:
     title: "メディアの読み込み"
@@ -2530,3 +2530,113 @@ _dataSaver:
   _code:
     title: "コードハイライト"
     description: "MFMなどでコードハイライト記法が使われている場合、タップするまで読み込まれなくなります。コードハイライトではハイライトする言語ごとにその定義ファイルを読み込む必要がありますが、それらが自動で読み込まれなくなるため、通信量の削減が見込めます。"
+
+_ocr:
+  button: OCR
+  existingWarning: 既存のキャプションは上書きされる
+  dataWarning: OCRは追加ダウンロードが必要な場合があります。
+
+  # https://tesseract-ocr.github.io/tessdoc/Data-Files#data-files-for-version-400-november-29-2016
+  languages:
+    afr: Afrikaans
+    amh: Amharic
+    ara: Arabic
+    asm: Assamese
+    aze: Azerbaijani
+    aze_cyrl: Azerbaijani - Cyrillic
+    bel: Belarusian
+    ben: Bengali
+    bod: Tibetan
+    bos: Bosnian
+    bul: Bulgarian
+    cat: Catalan; Valencian
+    ceb: Cebuano
+    ces: Czech
+    chi_sim: Chinese - Simplified
+    chi_tra: Chinese - Traditional
+    chr: Cherokee
+    cym: Welsh
+    dan: Danish
+    deu: German
+    dzo: Dzongkha
+    ell: Greek, Modern (1453-)
+    eng: English
+    enm: English, Middle (1100-1500)
+    epo: Esperanto
+    est: Estonian
+    eus: Basque
+    fas: Persian
+    fin: Finnish
+    fra: French
+    frk: German Fraktur
+    frm: French, Middle (ca. 1400-1600)
+    gle: Irish
+    glg: Galician
+    grc: Greek, Ancient (-1453)
+    guj: Gujarati
+    hat: Haitian; Haitian Creole
+    heb: Hebrew
+    hin: Hindi
+    hrv: Croatian
+    hun: Hungarian
+    iku: Inuktitut
+    ind: Indonesian
+    isl: Icelandic
+    ita: Italian
+    ita_old: Italian - Old
+    jav: Javanese
+    jpn: Japanese
+    kan: Kannada
+    kat: Georgian
+    kat_old: Georgian - Old
+    kaz: Kazakh
+    khm: Central Khmer
+    kir: Kirghiz; Kyrgyz
+    kor: Korean
+    kur: Kurdish
+    lao: Lao
+    lat: Latin
+    lav: Latvian
+    lit: Lithuanian
+    mal: Malayalam
+    mar: Marathi
+    mkd: Macedonian
+    mlt: Maltese
+    msa: Malay
+    mya: Burmese
+    nep: Nepali
+    nld: Dutch; Flemish
+    nor: Norwegian
+    ori: Oriya
+    pan: Panjabi; Punjabi
+    pol: Polish
+    por: Portuguese
+    pus: Pushto; Pashto
+    ron: Romanian; Moldavian; Moldovan
+    rus: Russian
+    san: Sanskrit
+    sin: Sinhala; Sinhalese
+    slk: Slovak
+    slv: Slovenian
+    spa: Spanish; Castilian
+    spa_old: Spanish; Castilian - Old
+    sqi: Albanian
+    srp: Serbian
+    srp_latn: Serbian - Latin
+    swa: Swahili
+    swe: Swedish
+    syr: Syriac
+    tam: Tamil
+    tel: Telugu
+    tgk: Tajik
+    tgl: Tagalog
+    tha: Thai
+    tir: Tigrinya
+    tur: Turkish
+    uig: Uighur; Uyghur
+    ukr: Ukrainian
+    urd: Urdu
+    uzb: Uzbek
+    uzb_cyrl: Uzbek - Cyrillic
+    vie: Vietnamese
+    yid: Yiddish
diff --git a/packages/frontend/package.json b/packages/frontend/package.json
index 496a083aa..b6cf6fba3 100644
--- a/packages/frontend/package.json
+++ b/packages/frontend/package.json
@@ -19,12 +19,12 @@
 	"dependencies": {
 		"@discordapp/twemoji": "15.0.2",
 		"@github/webauthn-json": "2.1.1",
+		"@phosphor-icons/web": "^2.0.3",
 		"@rollup/plugin-json": "6.1.0",
 		"@rollup/plugin-replace": "5.0.5",
 		"@rollup/pluginutils": "5.1.0",
 		"@sharkey/sfm-js": "0.24.1",
 		"@syuilo/aiscript": "0.16.0",
-		"@phosphor-icons/web": "^2.0.3",
 		"@twemoji/parser": "15.0.0",
 		"@vitejs/plugin-vue": "4.5.2",
 		"@vue/compiler-sfc": "3.3.12",
@@ -61,6 +61,7 @@
 		"sass": "1.69.5",
 		"shiki": "0.14.7",
 		"strict-event-emitter-types": "2.0.0",
+		"tesseract.js": "^5.0.4",
 		"textarea-caret": "3.1.0",
 		"three": "0.159.0",
 		"throttle-debounce": "5.0.0",
@@ -129,6 +130,7 @@
 		"storybook": "7.6.5",
 		"storybook-addon-misskey-theme": "github:misskey-dev/storybook-addon-misskey-theme",
 		"summaly": "github:misskey-dev/summaly",
+		"tesseract.js-core": "v5.0.0",
 		"vite-plugin-turbosnap": "1.0.3",
 		"vitest": "0.34.6",
 		"vitest-fetch-mock": "0.2.2",
diff --git a/packages/frontend/src/components/MkFileCaptionEditWindow.vue b/packages/frontend/src/components/MkFileCaptionEditWindow.vue
index b799fb944..647386bf8 100644
--- a/packages/frontend/src/components/MkFileCaptionEditWindow.vue
+++ b/packages/frontend/src/components/MkFileCaptionEditWindow.vue
@@ -7,7 +7,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 <MkModalWindow
 	ref="dialog"
 	:width="400"
-	:height="450"
+	:height="500"
 	:withOkButton="true"
 	:okButtonDisabled="false"
 	@ok="ok()"
@@ -20,6 +20,13 @@ SPDX-License-Identifier: AGPL-3.0-only
 		<MkTextarea v-model="caption" autofocus :placeholder="i18n.ts.inputNewDescription">
 			<template #label>{{ i18n.ts.caption }}</template>
 		</MkTextarea>
+		<span :class="$style.ocrHeader">{{ i18n.ts._ocr.button }}</span>
+		<div v-if="file.type.startsWith('image/')" :class="$style.ocr">
+			<MkSelect v-model="ocrLanguage">
+				<option v-for="language in ocrLanguages" :key="language" :value="language">{{ i18n.ts._ocr.languages[language] ?? language }}</option>
+			</MkSelect>
+			<MkButton small @click="onOCR">{{ i18n.ts._ocr.button }}</MkButton>
+		</div>
 	</MkSpacer>
 </MkModalWindow>
 </template>
@@ -27,10 +34,15 @@ SPDX-License-Identifier: AGPL-3.0-only
 <script lang="ts" setup>
 import { shallowRef, ref } from 'vue';
 import * as Misskey from 'misskey-js';
+import * as ocrLanguages from 'tesseract.js/src/constants/languages.js';
 import MkModalWindow from '@/components/MkModalWindow.vue';
 import MkTextarea from '@/components/MkTextarea.vue';
 import MkDriveFileThumbnail from '@/components/MkDriveFileThumbnail.vue';
+import MkButton from '@/components/MkButton.vue';
+import MkSelect from '@/components/MkSelect.vue';
 import { i18n } from '@/i18n.js';
+import * as os from '@/os.js';
+import { defaultStore } from '@/store.js';
 
 const props = defineProps<{
 	file: Misskey.entities.DriveFile;
@@ -45,9 +57,64 @@ const emit = defineEmits<{
 const dialog = shallowRef<InstanceType<typeof MkModalWindow>>();
 
 const caption = ref(props.default);
+const ocrLanguage = ref('eng');
 
 async function ok() {
 	emit('done', caption.value);
 	dialog.value.close();
 }
+
+async function onOCR() {
+	if (caption.value) {
+		const { canceled } = await os.confirm({ type: 'warning', text: i18n.ts._ocr.existingWarning });
+		if (canceled) {
+			return;
+		}
+	}
+
+	// as there isn't a generic data saver option this is the next best thing.
+	// unsure if i should introduce a separate dataSaver option
+	// unsure if this is *truly* necessary. the models are just a handful of megabytes
+	if (defaultStore.state.dataSaver.media) {
+		const { canceled } = await os.confirm({ type: 'warning', title: i18n.ts.dataSaver, text: i18n.ts._ocr.dataWarning });
+		if (canceled) {
+			return;
+		}
+	}
+
+	await os.promiseDialog((async () => {
+		const tesseract = await import('tesseract.js');
+		const worker = await tesseract.createWorker(ocrLanguage.value, undefined, {
+			logger(m) { console.log('[OCR]', m); },
+			workerPath: '/assets/tesseract/worker.min.js',
+			corePath: '/assets/tesseract/core',
+			workerBlobURL: false, // csp
+			legacyCore: false,
+			legacyLang: false,
+		});
+
+		const result = await worker.recognize(props.file.url);
+		caption.value = result.data.text;
+		await worker.terminate(); // potential future optimization: hang on to the worker for a few minutes and reuse just in case user runs multiple OCRs
+	})(), null, (err) => os.alert({ type: 'error', text: err.message }));
+}
 </script>
+
+<style lang="scss" module>
+.ocrHeader {
+	display: block;
+	margin-top: 8px;
+	margin-bottom: 2px;
+	font-size: 0.85em;
+	user-select: none;
+}
+
+.ocr {
+	display: flex;
+	gap: 8px;
+
+	> select {
+		flex-grow: 1;
+	}
+}
+</style>
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 62cf9ef9a..49c9d4b3c 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -786,6 +786,9 @@ importers:
       strict-event-emitter-types:
         specifier: 2.0.0
         version: 2.0.0
+      tesseract.js:
+        specifier: ^5.0.4
+        version: 5.0.4
       textarea-caret:
         specifier: 3.1.0
         version: 3.1.0
@@ -985,6 +988,9 @@ importers:
       summaly:
         specifier: github:misskey-dev/summaly
         version: github.com/misskey-dev/summaly/d2a3e07205c3c9769bc5a7b42031c8884b5a25c8
+      tesseract.js-core:
+        specifier: v5.0.0
+        version: 5.0.0
       vite-plugin-turbosnap:
         specifier: 1.0.3
         version: 1.0.3
@@ -1889,7 +1895,7 @@ packages:
       '@babel/traverse': 7.23.4
       '@babel/types': 7.23.4
       convert-source-map: 2.0.0
-      debug: 4.3.4(supports-color@8.1.1)
+      debug: 4.3.4(supports-color@5.5.0)
       gensync: 1.0.0-beta.2
       json5: 2.2.3
       semver: 6.3.1
@@ -2011,7 +2017,7 @@ packages:
       '@babel/core': 7.23.3
       '@babel/helper-compilation-targets': 7.23.6
       '@babel/helper-plugin-utils': 7.22.5
-      debug: 4.3.4(supports-color@8.1.1)
+      debug: 4.3.4(supports-color@5.5.0)
       lodash.debounce: 4.0.8
       resolve: 1.22.8
     transitivePeerDependencies:
@@ -3263,7 +3269,7 @@ packages:
       '@babel/helper-split-export-declaration': 7.22.6
       '@babel/parser': 7.23.4
       '@babel/types': 7.23.4
-      debug: 4.3.4(supports-color@8.1.1)
+      debug: 4.3.4(supports-color@5.5.0)
       globals: 11.12.0
     transitivePeerDependencies:
       - supports-color
@@ -4143,7 +4149,7 @@ packages:
     engines: {node: ^12.22.0 || ^14.17.0 || >=16.0.0}
     dependencies:
       ajv: 6.12.6
-      debug: 4.3.4(supports-color@8.1.1)
+      debug: 4.3.4(supports-color@5.5.0)
       espree: 9.6.1
       globals: 13.23.0
       ignore: 5.3.0
@@ -4160,7 +4166,7 @@ packages:
     engines: {node: ^12.22.0 || ^14.17.0 || >=16.0.0}
     dependencies:
       ajv: 6.12.6
-      debug: 4.3.4(supports-color@8.1.1)
+      debug: 4.3.4(supports-color@5.5.0)
       espree: 9.6.1
       globals: 13.23.0
       ignore: 5.3.0
@@ -4431,7 +4437,7 @@ packages:
     engines: {node: '>=10.10.0'}
     dependencies:
       '@humanwhocodes/object-schema': 2.0.1
-      debug: 4.3.4(supports-color@8.1.1)
+      debug: 4.3.4(supports-color@5.5.0)
       minimatch: 3.1.2
     transitivePeerDependencies:
       - supports-color
@@ -4956,7 +4962,7 @@ packages:
       '@open-draft/until': 1.0.3
       '@types/debug': 4.1.7
       '@xmldom/xmldom': 0.8.6
-      debug: 4.3.4(supports-color@8.1.1)
+      debug: 4.3.4(supports-color@5.5.0)
       headers-polyfill: 3.2.5
       outvariant: 1.4.0
       strict-event-emitter: 0.2.8
@@ -8245,7 +8251,7 @@ packages:
       '@typescript-eslint/type-utils': 6.11.0(eslint@8.53.0)(typescript@5.3.3)
       '@typescript-eslint/utils': 6.11.0(eslint@8.53.0)(typescript@5.3.3)
       '@typescript-eslint/visitor-keys': 6.11.0
-      debug: 4.3.4(supports-color@8.1.1)
+      debug: 4.3.4(supports-color@5.5.0)
       eslint: 8.53.0
       graphemer: 1.4.0
       ignore: 5.3.0
@@ -8274,7 +8280,7 @@ packages:
       '@typescript-eslint/type-utils': 6.12.0(eslint@8.54.0)(typescript@5.1.6)
       '@typescript-eslint/utils': 6.12.0(eslint@8.54.0)(typescript@5.1.6)
       '@typescript-eslint/visitor-keys': 6.12.0
-      debug: 4.3.4(supports-color@8.1.1)
+      debug: 4.3.4(supports-color@5.5.0)
       eslint: 8.54.0
       graphemer: 1.4.0
       ignore: 5.3.0
@@ -8303,7 +8309,7 @@ packages:
       '@typescript-eslint/type-utils': 6.14.0(eslint@8.56.0)(typescript@5.3.3)
       '@typescript-eslint/utils': 6.14.0(eslint@8.56.0)(typescript@5.3.3)
       '@typescript-eslint/visitor-keys': 6.14.0
-      debug: 4.3.4(supports-color@8.1.1)
+      debug: 4.3.4(supports-color@5.5.0)
       eslint: 8.56.0
       graphemer: 1.4.0
       ignore: 5.3.0
@@ -8329,7 +8335,7 @@ packages:
       '@typescript-eslint/types': 6.11.0
       '@typescript-eslint/typescript-estree': 6.11.0(typescript@5.3.3)
       '@typescript-eslint/visitor-keys': 6.11.0
-      debug: 4.3.4(supports-color@8.1.1)
+      debug: 4.3.4(supports-color@5.5.0)
       eslint: 8.53.0
       typescript: 5.3.3
     transitivePeerDependencies:
@@ -8350,7 +8356,7 @@ packages:
       '@typescript-eslint/types': 6.12.0
       '@typescript-eslint/typescript-estree': 6.12.0(typescript@5.1.6)
       '@typescript-eslint/visitor-keys': 6.12.0
-      debug: 4.3.4(supports-color@8.1.1)
+      debug: 4.3.4(supports-color@5.5.0)
       eslint: 8.54.0
       typescript: 5.1.6
     transitivePeerDependencies:
@@ -8371,7 +8377,7 @@ packages:
       '@typescript-eslint/types': 6.14.0
       '@typescript-eslint/typescript-estree': 6.14.0(typescript@5.3.3)
       '@typescript-eslint/visitor-keys': 6.14.0
-      debug: 4.3.4(supports-color@8.1.1)
+      debug: 4.3.4(supports-color@5.5.0)
       eslint: 8.56.0
       typescript: 5.3.3
     transitivePeerDependencies:
@@ -8414,7 +8420,7 @@ packages:
     dependencies:
       '@typescript-eslint/typescript-estree': 6.11.0(typescript@5.3.3)
       '@typescript-eslint/utils': 6.11.0(eslint@8.53.0)(typescript@5.3.3)
-      debug: 4.3.4(supports-color@8.1.1)
+      debug: 4.3.4(supports-color@5.5.0)
       eslint: 8.53.0
       ts-api-utils: 1.0.3(typescript@5.3.3)
       typescript: 5.3.3
@@ -8434,7 +8440,7 @@ packages:
     dependencies:
       '@typescript-eslint/typescript-estree': 6.12.0(typescript@5.1.6)
       '@typescript-eslint/utils': 6.12.0(eslint@8.54.0)(typescript@5.1.6)
-      debug: 4.3.4(supports-color@8.1.1)
+      debug: 4.3.4(supports-color@5.5.0)
       eslint: 8.54.0
       ts-api-utils: 1.0.3(typescript@5.1.6)
       typescript: 5.1.6
@@ -8454,7 +8460,7 @@ packages:
     dependencies:
       '@typescript-eslint/typescript-estree': 6.14.0(typescript@5.3.3)
       '@typescript-eslint/utils': 6.14.0(eslint@8.56.0)(typescript@5.3.3)
-      debug: 4.3.4(supports-color@8.1.1)
+      debug: 4.3.4(supports-color@5.5.0)
       eslint: 8.56.0
       ts-api-utils: 1.0.3(typescript@5.3.3)
       typescript: 5.3.3
@@ -8488,7 +8494,7 @@ packages:
     dependencies:
       '@typescript-eslint/types': 6.11.0
       '@typescript-eslint/visitor-keys': 6.11.0
-      debug: 4.3.4(supports-color@8.1.1)
+      debug: 4.3.4(supports-color@5.5.0)
       globby: 11.1.0
       is-glob: 4.0.3
       semver: 7.5.4
@@ -8509,7 +8515,7 @@ packages:
     dependencies:
       '@typescript-eslint/types': 6.12.0
       '@typescript-eslint/visitor-keys': 6.12.0
-      debug: 4.3.4(supports-color@8.1.1)
+      debug: 4.3.4(supports-color@5.5.0)
       globby: 11.1.0
       is-glob: 4.0.3
       semver: 7.5.4
@@ -8530,7 +8536,7 @@ packages:
     dependencies:
       '@typescript-eslint/types': 6.14.0
       '@typescript-eslint/visitor-keys': 6.14.0
-      debug: 4.3.4(supports-color@8.1.1)
+      debug: 4.3.4(supports-color@5.5.0)
       globby: 11.1.0
       is-glob: 4.0.3
       semver: 7.5.4
@@ -8969,7 +8975,7 @@ packages:
     resolution: {integrity: sha512-RZNwNclF7+MS/8bDg70amg32dyeZGZxiDuQmZxKLAlQjr3jGyLx+4Kkk58UO7D2QdgFIQCovuSuZESne6RG6XQ==}
     engines: {node: '>= 6.0.0'}
     dependencies:
-      debug: 4.3.4(supports-color@8.1.1)
+      debug: 4.3.4(supports-color@5.5.0)
     transitivePeerDependencies:
       - supports-color
 
@@ -8977,7 +8983,7 @@ packages:
     resolution: {integrity: sha512-o/zjMZRhJxny7OyEF+Op8X+efiELC7k7yOjMzgfzVqOzXqkBkWI79YoTdOtsuWd5BWhAGAuOY/Xa6xpiaWXiNg==}
     engines: {node: '>= 14'}
     dependencies:
-      debug: 4.3.4(supports-color@8.1.1)
+      debug: 4.3.4(supports-color@5.5.0)
     transitivePeerDependencies:
       - supports-color
     dev: false
@@ -9374,7 +9380,7 @@ packages:
     resolution: {integrity: sha512-TAlMYvOuwGyLK3PfBb5WKBXZmXz2fVCgv23d6zZFdle/q3gPjmxBaeuC0pY0Dzs5PWMSgfqqEZkrye19GlDTgw==}
     dependencies:
       archy: 1.0.0
-      debug: 4.3.4(supports-color@8.1.1)
+      debug: 4.3.4(supports-color@5.5.0)
       fastq: 1.15.0
     transitivePeerDependencies:
       - supports-color
@@ -9624,6 +9630,10 @@ packages:
     resolution: {integrity: sha512-cRygWd7kGBQO3VEhPiTgq4Wc43ctsM+o46urrmPOiuAe+07fzlSB9OJVdpgDL0jPqXUVQ9ht7aq7kxOeJHRK+w==}
     dev: false
 
+  /bmp-js@0.1.0:
+    resolution: {integrity: sha512-vHdS19CnY3hwiNdkaqk93DvjVLfbEcI8mys4UjuWrlX1haDmroo8o4xCzh4wD6DGV6HxRCyauwhHRqMTfERtjw==}
+    dev: false
+
   /bn.js@4.12.0:
     resolution: {integrity: sha512-c98Bf3tPniI+scsdk237ku1Dc3ujXQTSgyiPUDEOe7tRkhrqridvh8klBv0HCEso1OLOYcHuCv/cS6DNxKH+ZA==}
     dev: false
@@ -10829,7 +10839,6 @@ packages:
     dependencies:
       ms: 2.1.2
       supports-color: 5.5.0
-    dev: true
 
   /debug@4.3.4(supports-color@8.1.1):
     resolution: {integrity: sha512-PRWFHuSU3eDtQJPvnNY7Jcket1j0t5OuOsFzPPzsekD52Zl8qUfFIPEiswXqIvHWGVHOgX+7G/vCNNhehwxfkQ==}
@@ -10842,6 +10851,7 @@ packages:
     dependencies:
       ms: 2.1.2
       supports-color: 8.1.1
+    dev: true
 
   /decamelize-keys@1.1.1:
     resolution: {integrity: sha512-WiPxgEirIV0/eIOMcnFBA3/IJZAZqKnwAwWyvvdi4lsr1WCN22nhdf/3db3DoZcUjTV2SqfzIwNyp6y2xs3nmg==}
@@ -11054,7 +11064,7 @@ packages:
     hasBin: true
     dependencies:
       address: 1.2.2
-      debug: 4.3.4(supports-color@8.1.1)
+      debug: 4.3.4(supports-color@5.5.0)
     transitivePeerDependencies:
       - supports-color
     dev: true
@@ -11375,7 +11385,7 @@ packages:
     peerDependencies:
       esbuild: '>=0.12 <1'
     dependencies:
-      debug: 4.3.4(supports-color@8.1.1)
+      debug: 4.3.4(supports-color@5.5.0)
       esbuild: 0.18.17
     transitivePeerDependencies:
       - supports-color
@@ -11657,7 +11667,7 @@ packages:
       ajv: 6.12.6
       chalk: 4.1.2
       cross-spawn: 7.0.3
-      debug: 4.3.4(supports-color@8.1.1)
+      debug: 4.3.4(supports-color@5.5.0)
       doctrine: 3.0.0
       escape-string-regexp: 4.0.0
       eslint-scope: 7.2.2
@@ -11704,7 +11714,7 @@ packages:
       ajv: 6.12.6
       chalk: 4.1.2
       cross-spawn: 7.0.3
-      debug: 4.3.4(supports-color@8.1.1)
+      debug: 4.3.4(supports-color@5.5.0)
       doctrine: 3.0.0
       escape-string-regexp: 4.0.0
       eslint-scope: 7.2.2
@@ -11751,7 +11761,7 @@ packages:
       ajv: 6.12.6
       chalk: 4.1.2
       cross-spawn: 7.0.3
-      debug: 4.3.4(supports-color@8.1.1)
+      debug: 4.3.4(supports-color@5.5.0)
       doctrine: 3.0.0
       escape-string-regexp: 4.0.0
       eslint-scope: 7.2.2
@@ -12389,7 +12399,7 @@ packages:
       debug:
         optional: true
     dependencies:
-      debug: 4.3.4(supports-color@8.1.1)
+      debug: 4.3.4(supports-color@5.5.0)
 
   /for-each@0.3.3:
     resolution: {integrity: sha512-jqYfLp7mo9vIyQf8ykW2v7A+2N4QjeCeI5+Dz9XraiO1ign81wjiH7Fb9vSOWvQfNtmSa4H2RoQTrrXivdUZmw==}
@@ -13038,7 +13048,7 @@ packages:
     engines: {node: '>= 14'}
     dependencies:
       agent-base: 7.1.0
-      debug: 4.3.4(supports-color@8.1.1)
+      debug: 4.3.4(supports-color@5.5.0)
     transitivePeerDependencies:
       - supports-color
     dev: false
@@ -13079,7 +13089,7 @@ packages:
     engines: {node: '>= 6.0.0'}
     dependencies:
       agent-base: 5.1.1
-      debug: 4.3.4(supports-color@8.1.1)
+      debug: 4.3.4(supports-color@5.5.0)
     transitivePeerDependencies:
       - supports-color
     dev: true
@@ -13089,7 +13099,7 @@ packages:
     engines: {node: '>= 6'}
     dependencies:
       agent-base: 6.0.2
-      debug: 4.3.4(supports-color@8.1.1)
+      debug: 4.3.4(supports-color@5.5.0)
     transitivePeerDependencies:
       - supports-color
 
@@ -13098,7 +13108,7 @@ packages:
     engines: {node: '>= 14'}
     dependencies:
       agent-base: 7.1.0
-      debug: 4.3.4(supports-color@8.1.1)
+      debug: 4.3.4(supports-color@5.5.0)
     transitivePeerDependencies:
       - supports-color
     dev: false
@@ -13108,7 +13118,7 @@ packages:
     engines: {node: '>= 14'}
     dependencies:
       agent-base: 7.1.0
-      debug: 4.3.4(supports-color@8.1.1)
+      debug: 4.3.4(supports-color@5.5.0)
     transitivePeerDependencies:
       - supports-color
     dev: false
@@ -13258,7 +13268,7 @@ packages:
     dependencies:
       '@ioredis/commands': 1.2.0
       cluster-key-slot: 1.1.2
-      debug: 4.3.4(supports-color@8.1.1)
+      debug: 4.3.4(supports-color@5.5.0)
       denque: 2.1.0
       lodash.defaults: 4.2.0
       lodash.isarguments: 3.1.0
@@ -13387,6 +13397,10 @@ packages:
     hasBin: true
     dev: true
 
+  /is-electron@2.2.2:
+    resolution: {integrity: sha512-FO/Rhvz5tuw4MCWkpMzHFKWD2LsfHzIb7i6MdPYZ/KW7AlxawyLkqdy+jPZP1WubqEADE3O4FUENlJHDfQASRg==}
+    dev: false
+
   /is-expression@4.0.0:
     resolution: {integrity: sha512-zMIXX63sxzG3XrkHkrAPvm/OVZVSCPNkwMHU8oTX7/U3AL78I0QXCEICXUM13BIa8TYGZ68PiTKfQz3yaTNr4A==}
     dependencies:
@@ -13586,6 +13600,10 @@ packages:
     engines: {node: '>=10'}
     dev: true
 
+  /is-url@1.2.4:
+    resolution: {integrity: sha512-ITvGim8FhRiYe4IQ5uHSkj7pVaPDrCTkNd3yq3cV7iZAcJdHTUMPMEHcqSOy9xZ9qFenQCvi+2wjH9a1nXqHww==}
+    dev: false
+
   /is-weakmap@2.0.1:
     resolution: {integrity: sha512-NSBR4kH5oVj1Uwvv970ruUkCV7O1mzgVFO4/rev2cLRda9Tm9HrL70ZPut4rOHgY0FNrUu9BCbXA2sdQ+x0chA==}
     dev: true
@@ -13687,7 +13705,7 @@ packages:
     resolution: {integrity: sha512-n3s8EwkdFIJCG3BPKBYvskgXGoy88ARzvegkitk60NxRdwltLOTaH7CUiMRXvwYorl0Q712iEjcWB+fK/MrWVw==}
     engines: {node: '>=10'}
     dependencies:
-      debug: 4.3.4(supports-color@8.1.1)
+      debug: 4.3.4(supports-color@5.5.0)
       istanbul-lib-coverage: 3.2.0
       source-map: 0.6.1
     transitivePeerDependencies:
@@ -14363,7 +14381,7 @@ packages:
     resolution: {integrity: sha512-pJ4XLQP4Q9HTxl6RVDLJ8Cyh1uitSs0CzDBAz1uoJ4sRD/Bk7cFSXL1FUXDW3zJ7YnfliJx6eu8Jn283bpZ4Yg==}
     engines: {node: '>=10'}
     dependencies:
-      debug: 4.3.4(supports-color@8.1.1)
+      debug: 4.3.4(supports-color@5.5.0)
       rfdc: 1.3.0
       uri-js: 4.4.1
     transitivePeerDependencies:
@@ -15720,6 +15738,11 @@ packages:
       yargs-parser: 21.1.1
     dev: true
 
+  /opencollective-postinstall@2.0.3:
+    resolution: {integrity: sha512-8AV/sCtuzUeTo8gQK5qDZzARrulB3egtLzFgteqB2tcT4Mw7B8Kt7JcDHmltjz6FOAHsvTevk70gZEbhM4ZS9Q==}
+    hasBin: true
+    dev: false
+
   /opentype.js@0.4.11:
     resolution: {integrity: sha512-GthxucX/6aftfLdeU5Ho7o7zmQcC8uVtqdcelVq12X++ndxwBZG8Xb5rFEKT7nEcWDD2P1x+TNuJ70jtj1Mbpw==}
     hasBin: true
@@ -16881,7 +16904,7 @@ packages:
     engines: {node: '>=8.16.0'}
     dependencies:
       '@types/mime-types': 2.1.4
-      debug: 4.3.4(supports-color@8.1.1)
+      debug: 4.3.4(supports-color@5.5.0)
       extract-zip: 1.7.0
       https-proxy-agent: 4.0.0
       mime: 2.6.0
@@ -17864,7 +17887,7 @@ packages:
     dependencies:
       '@hapi/hoek': 10.0.1
       '@hapi/wreck': 18.0.1
-      debug: 4.3.4(supports-color@8.1.1)
+      debug: 4.3.4(supports-color@5.5.0)
       joi: 17.7.0
     transitivePeerDependencies:
       - supports-color
@@ -18064,7 +18087,7 @@ packages:
     engines: {node: '>= 14'}
     dependencies:
       agent-base: 7.1.0
-      debug: 4.3.4(supports-color@8.1.1)
+      debug: 4.3.4(supports-color@5.5.0)
       socks: 2.7.1
     transitivePeerDependencies:
       - supports-color
@@ -18217,7 +18240,7 @@ packages:
       arg: 5.0.2
       bluebird: 3.7.2
       check-more-types: 2.24.0
-      debug: 4.3.4(supports-color@8.1.1)
+      debug: 4.3.4(supports-color@5.5.0)
       execa: 5.1.1
       lazy-ass: 1.6.0
       ps-tree: 1.2.0
@@ -18619,6 +18642,27 @@ packages:
       commander: 2.20.3
       source-map-support: 0.5.21
 
+  /tesseract.js-core@5.0.0:
+    resolution: {integrity: sha512-lJur5LzjinW5VYMKlVNnBU2JPLpO+A9VqAYBeuV+ZgH0hKvsnm+536Yyp+/zRTBdLe7D6Kok0FN9g+TE4J8qGA==}
+
+  /tesseract.js@5.0.4:
+    resolution: {integrity: sha512-GCIoSQMZlvTP2AaHrjUOH29/oyO7ZyHVe+BhTexEcO7/nDClRVDRjl2sYJLOWSSNbTDrm5q2m1+gfaf3lUrZ5Q==}
+    requiresBuild: true
+    dependencies:
+      bmp-js: 0.1.0
+      idb-keyval: 6.2.1
+      is-electron: 2.2.2
+      is-url: 1.2.4
+      node-fetch: 2.7.0
+      opencollective-postinstall: 2.0.3
+      regenerator-runtime: 0.13.11
+      tesseract.js-core: 5.0.0
+      wasm-feature-detect: 1.6.1
+      zlibjs: 0.3.1
+    transitivePeerDependencies:
+      - encoding
+    dev: false
+
   /test-exclude@6.0.0:
     resolution: {integrity: sha512-cAGWPIyOHU6zlmg88jwm7VRyXnMN7iV68OGAbYDk/Mh/xC/pzVPlQtY6ngoIH/5/tciuhGfvESU8GrHrcxD56w==}
     engines: {node: '>=8'}
@@ -19124,7 +19168,7 @@ packages:
       chalk: 4.1.2
       cli-highlight: 2.1.11
       date-fns: 2.30.0
-      debug: 4.3.4(supports-color@8.1.1)
+      debug: 4.3.4(supports-color@5.5.0)
       dotenv: 16.0.3
       glob: 8.1.0
       ioredis: 5.3.2
@@ -19483,7 +19527,7 @@ packages:
     hasBin: true
     dependencies:
       cac: 6.7.14
-      debug: 4.3.4(supports-color@8.1.1)
+      debug: 4.3.4(supports-color@5.5.0)
       mlly: 1.4.0
       pathe: 1.1.1
       picocolors: 1.0.0
@@ -19595,7 +19639,7 @@ packages:
       acorn-walk: 8.2.0
       cac: 6.7.14
       chai: 4.3.10
-      debug: 4.3.4(supports-color@8.1.1)
+      debug: 4.3.4(supports-color@5.5.0)
       happy-dom: 10.0.3
       local-pkg: 0.4.3
       magic-string: 0.30.3
@@ -19675,7 +19719,7 @@ packages:
     peerDependencies:
       eslint: '>=6.0.0'
     dependencies:
-      debug: 4.3.4(supports-color@8.1.1)
+      debug: 4.3.4(supports-color@5.5.0)
       eslint: 8.56.0
       eslint-scope: 7.2.2
       eslint-visitor-keys: 3.4.3
@@ -19765,6 +19809,10 @@ packages:
       makeerror: 1.0.12
     dev: true
 
+  /wasm-feature-detect@1.6.1:
+    resolution: {integrity: sha512-R1i9ED8UlLu/foILNB1ck9XS63vdtqU/tP1MCugVekETp/ySCrBZRk5I/zI67cI1wlQYeSonNm1PLjDHZDNg6g==}
+    dev: false
+
   /watchpack@2.4.0:
     resolution: {integrity: sha512-Lcvm7MGST/4fup+ifyKi2hjyIAwcdI4HRgtvTpIUxBRhB+RFtUh8XtDOxUfctVCnhVi+QQj49i91OyvzkJl6cg==}
     engines: {node: '>=10.13.0'}
@@ -20199,6 +20247,10 @@ packages:
       readable-stream: 3.6.0
     dev: false
 
+  /zlibjs@0.3.1:
+    resolution: {integrity: sha512-+J9RrgTKOmlxFSDHo0pI1xM6BLVUv+o0ZT9ANtCxGkjIVCCUdx9alUF8Gm+dGLKbkkkidWIHFDZHDMpfITt4+w==}
+    dev: false
+
   github.com/aiscript-dev/aiscript-vscode/b5a8aa0ad927831a0b867d1c183460a14e6c48cd:
     resolution: {tarball: https://codeload.github.com/aiscript-dev/aiscript-vscode/tar.gz/b5a8aa0ad927831a0b867d1c183460a14e6c48cd}
     name: aiscript-vscode
diff --git a/scripts/build-assets.mjs b/scripts/build-assets.mjs
index 22f0871ca..91a76773e 100644
--- a/scripts/build-assets.mjs
+++ b/scripts/build-assets.mjs
@@ -42,6 +42,15 @@ async function copyFrontendShikiAssets() {
   await fs.cp('./packages/frontend/node_modules/shiki/themes', './built/_frontend_dist_/shiki/themes', { dereference: true, recursive: true });
 }
 
+async function copyFrontendTesseractAssets() {
+	// https://github.com/naptha/tesseract.js/blob/master/docs/local-installation.md
+  await fs.cp('./packages/frontend/node_modules/tesseract.js/dist/worker.min.js', './built/_frontend_dist_/tesseract/worker.min.js', { dereference: true, recursive: true });
+  await fs.cp('./packages/frontend/node_modules/tesseract.js-core/tesseract-core.wasm.js', './built/_frontend_dist_/tesseract/core/tesseract-core.wasm.js', { dereference: true, recursive: true });
+  await fs.cp('./packages/frontend/node_modules/tesseract.js-core/tesseract-core-simd.wasm.js', './built/_frontend_dist_/tesseract/core/tesseract-core-simd.wasm.js', { dereference: true, recursive: true });
+  await fs.cp('./packages/frontend/node_modules/tesseract.js-core/tesseract-core-lstm.wasm.js', './built/_frontend_dist_/tesseract/core/tesseract-core-lstm.wasm.js', { dereference: true, recursive: true });
+  await fs.cp('./packages/frontend/node_modules/tesseract.js-core/tesseract-core-simd-lstm.wasm.js', './built/_frontend_dist_/tesseract/core/tesseract-core-simd-lstm.wasm.js', { dereference: true, recursive: true });
+}
+
 async function copyBackendViews() {
   await fs.cp('./packages/backend/src/server/web/views', './packages/backend/built/server/web/views', { recursive: true });
 }
@@ -82,6 +91,7 @@ async function build() {
     copyFrontendTablerIcons(),
     copyFrontendLocales(),
     copyFrontendShikiAssets(),
+    copyFrontendTesseractAssets(),
     copyBackendViews(),
     buildBackendScript(),
     buildBackendStyle(),