漢字OS
Paste kanji data in the format: kanji character on one line, meaning on the next line, separated by blank lines or "---".
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Quickly test your recognition. The system grades you automatically.
Actively recall and type the answer. You grade your own performance.
Translate from English to Japanese. You grade your own performance.
Fine-tune your learning experience for optimal results
How questions are presented
Prefer Japanese descriptions when available (experimental)
Text-to-speech timing
How you provide answers
Optimized configurations for different learning styles
Configure your practice session - no SRS impact!
Conjugation mini-game (no SRS impact)
Bank, Top-ups, and API call history
sentences array. We’ll validate, normalize, and dedupe automatically.Restore from a backup file
Select a JSON backup file exported from KanjiOS. Your current data will be backed up first.
Simple, stable scheduler with expert defaults
Adjust how often cards appear per mode
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Powered by FSRS memory model
These tools affect the current mode only.
Comprehensive learning progress insights
Weak items based on recent performance
Top 20 items sorted by selected criteria
| Item | Meaning | Category | Status | Interval | Reps | Ease | Next Review |
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Choose your preferred Japanese voice for TTS
Explore sentence variations and practice production
💡 Tip: Click different options to hear how the sentence changes. All variations are grammatically correct!
Browse stored items, inspect their JSON, and prep AI-assisted fixes.
Upload an Anki export, inspect entries, and import them into your dashboard.
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Your data is automatically backed up. Restore from a previous backup or create a new one.
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