How to Use Kanji Lens
Follow these simple steps to start learning Japanese from any content on the web.
1
Install the Extension
Download Kanji Lens from the Chrome Web Store or Firefox Add-ons. Click "Add to Browser" and the extension will be ready to use instantly.
2
Log In or Register
Click the Kanji Lens icon in your browser toolbar and sign in with your account. This syncs your learning progress across all your devices.
3
Scan Images for Japanese Text
Found a manga panel or raw webtoon? Right-click the image to open the Kanji Lens context menu and choose what you need.
- Scan for Kanji – Extract text and study word by word
- Translate Image – Generate a full translation overlay
Right-click any image to scan
4
Interactive OCR Overlay
The extracted text appears directly on top of the image, so you can interact with every word in-place.
- Color-coded progress (mastered, learning, tricky, new)
- Tap any word to copy it to your notes
- Hover for detailed kanji information
Interactive overlay on scanned images
5
Hover Over Any Kanji
After the overlay is active, continue reading as usual. Hover your mouse over any kanji character to reveal:
- Readings (kunyomi & onyomi)
- English meanings
- Your learning progress
Tooltip appears instantly on hover
6
Learn with Spaced Repetition
When you encounter a kanji, you'll see SRS buttons: "Yes", "Kinda", or "No". Answer honestly to track your memory. The system schedules reviews at optimal intervals.
Track your progress with SRS
7
Create Custom Mnemonics
Struggling to remember a kanji? Create your own mnemonic! Personal memory aids are far more effective than generic ones. Click the edit icon in the tooltip to add your own.
Add personal memory aids
8
Image Translation Overlay
Need the full panel translated? Switch to the translation overlay to see natural English lines placed right over the art.
- Sentence-level translation for every speech bubble
- Keep the original artwork visible behind the text
- Perfect for checking your understanding at a glance
See every line translated instantly
⚙️ Customize Your Experience
Tailor the extension to your learning style
Global Settings
Adjust furigana size, tooltip behavior, and display preferences.
Per-Site Settings
Configure different settings for each website you visit.
💡 Pro Tips for Faster Learning
📅
Be Consistent
Use the extension daily, even for just 10 minutes. Consistency beats intensity.
🧠
Make It Personal
Create mnemonics that relate to your own experiences – they stick better.
📚
Read What You Love
Use the OCR on manga you enjoy. Learning is faster when you're engaged.
🎯
Focus on Problem Kanji
Spend extra time on kanji you mark "No" – they need more attention.
Ready to Start Learning?
Install Kanji Lens and begin your Japanese reading journey today.