Free, in-browser Chinese reading analysis
HanziCoverage
Paste any Chinese text. See how much of it you can already read, and exactly which words to learn next.
HanziCoverage estimates your word-recognition coverage at each HSK level, both the 2.0 six-level and the 3.0 nine-level schemes, and ranks the words you are missing by how common they are. Your text is analyzed entirely on your device and is never uploaded. We are not affiliated with HSK, Hanban, or Chinese Testing International, and coverage is a word-recognition estimate, not a comprehension guarantee.
Three free tools, no account, no upload
Text coverage analyzer
Paste any Simplified or Traditional Chinese and see roughly how much you can already read at each HSK level, plus your highest-value unknown words sorted by frequency.
Difficulty grader
For teachers and tutors: paste a candidate text and get the HSK level at which a reader reaches comfortable coverage, and a plain-language difficulty band.
Frequency coverage curve
How many words do you actually need? Explore how the top N Chinese words cover a share of everyday running text, for both HSK schemes.