CodeProof
Write better code.
Prove it meets the standard.
CodeProof checks your code against the standards that matter to its language — and explains why, not just what.
- Runs entirely server-side — your code is never executed, only parsed and analysed
- In-process WebAssembly engine, no external services
- Local Analysis mode: files stay in your browser's storage, not an account
Use the integrated editor to write or paste your code.
Analyse code against language-specific standards.
Learn why each issue matters, in plain language.
Get a clear CodeProof quality result you can trust.
Built to teach, not just flag
A normal linter says E501. CodeProof explains the standard, teaches the developer, and proves the result.
PEP 8 checks run on Ruff's actual analysis engine — not a reimplementation, so results match what the Python ecosystem already trusts.
Every issue answers what's wrong, why it matters, and how to fix it — the difference between a linter and a learning tool.
Safe fixes — spacing, blank lines — apply in one click. Anything that would require guessing, like a missing docstring, is left for you.
Weighted by severity across formatting, documentation, naming, and structure — a signal, not a false sense of precision.
Built for more than one language
CodeProof separates language, standard, and rule from the start. Python and PEP 8 are fully implemented today; JavaScript, TypeScript, Java, C++, Go, and Rust are on the roadmap and clearly marked as coming soon — never simulated.
View the standards library