Code Readability Score
Score code readability from 0 to 100 using line length, function size, complexity, nesting, naming and comments. Free and private: runs in your browser.
Paste code to get a readability grade (A–E) and a breakdown of what is helping or hurting it.
Runs entirely in your browser. Nothing you paste is uploaded or stored.
Use cases
- Check a function before opening a pull request.
- Explain a review comment with numbers instead of opinions.
- Find the riskiest code to refactor first.
Frequently asked questions
What makes code readable?
Short functions, low complexity, shallow nesting, descriptive names and comments that explain why rather than what. This score combines those signals.
Is the Code Readability Score free?
Yes. It is free with no sign-up, and it runs entirely in your browser, so your input is never uploaded or stored.
How accurate is a browser-based code check?
It uses fast heuristics on the snippet you paste, so it is great for quick feedback. For whole repositories, cross-file analysis and history, run a full CodeInspector scan.
Related tools
Track complexity, duplication and code smells across your whole codebase with CodeInspector.