Learn languages
while you browse the web
LangGrove automatically highlights your saved vocabulary on any webpage, PDF, EPUB, or document. See pronunciation above, translation below — seamless, distraction-free learning in 30+ languages.
Free plan includes 100 highlighted words • No credit card required • Upgrade anytime
Live highlighting on any site
Japanese · Spanish · Korean · 30+ languages
Learn any language, on any site
From Japanese kanji to Spanish verbs, Korean hangul to French conjugations — LangGrove highlights your vocabulary in any script.
Full support for RTL languages (Arabic, Hebrew) and CJK characters
Reading becomes learning
No more context switching between dictionary tabs. Your vocabulary follows you everywhere—news, articles, forums, even PDFs.
Smart Word Highlighting
Your saved words are automatically highlighted on any webpage you visit. No manual searching—just read naturally.
Pronunciation Above
Phonetic pronunciation appears right above each word. Toggle on/off anytime.
Translation Below
See definitions and translations instantly below the word. Supports 30+ languages with smart detection.
PDF & Document Reader
Same powerful highlighting in PDFs, EPUBs, DOCX, HTML, Markdown, and TXT files.
Import from Anki or CSV
Bring your existing vocabulary. Import from Anki exports, CSV files, or JSON backup.
Local Storage First
Your vocabulary is saved locally in your browser. No account required. (Cloud sync coming soon)
Customizable Colors
Choose from natural green presets or pick your own. Separate settings for web pages and PDFs.
Unlimited Word Storage
Save unlimited words on every plan. Only highlighted words count toward your quota.
30+ Languages Supported
Japanese, Spanish, Korean, French, German, Chinese, Arabic, and more. Full RTL support.
Your data stays on your device — for now
LangGrove saves all your words locally in your browser. No account, no cloud, no subscription required to save words.Cloud sync is on our roadmap, but not yet available.
Pronunciation + Translation
Your vocabulary, highlighted on any page. Works with Japanese, Spanish, Korean, and 12+ languages.
Bring your words. Take them anywhere.
Built for real learners. Import your existing deck from Anki, CSV, or JSON backup. Export anytime—full backup with complete word structure, senses, and tags.
Recycle Bin: Zero data loss
Deleted words go to recycle bin. Restore anytime before permanent removal or cloud sync.
Save unlimited words for free.
Pay only for what you highlight.
Every plan includes unlimited word storage — you can save thousands of words forever. You only pay for the number of words you want actively highlighted on web pages.
Free: 100 highlighted words • Basic: 500 • Pro: Unlimited
Free
For casual learners
- Unlimited word storage
- 100 highlighted words
- Import from CSV
- Local storage (no cloud)
- Basic PDF support
No credit card required • 100 highlighted words
Cloud sync is planned, not yet available
Currently, all words are stored locally in your browser. If you switch devices or clear browser data, your vocabulary won't transfer. We're working on secure cloud sync — coming soon.