Detect language
The formatter you pick implies a language and its canonical conventions: indent style, quote style, semicolons, print width, bracket spacing.
// code-formatter-comparator
Paste a file, pick a target formatter, and see how far your code drifts from its canonical conventions — with per-rule findings and a consistency score.
// results
// how-it-works
Check rules
Twelve deterministic text rules run over your input: indentation, quotes, semicolons, trailing commas, line length, whitespace, and more.
Score
Each finding is weighted by severity and normalized by file size to produce a 0-100 consistency score and a grade.
Compare
A rule-by-rule table shows how Prettier, Black, gofmt, and rustfmt disagree on the same convention.
// limitations
- This is heuristic text analysis. It does not build an AST and does not parse your code.
- Indentation inference can misread wrapped lines, continuation lines, and multi-line strings.
- Quote counting is naive — it can be fooled by quotes inside strings, comments, and escapes.
- It checks conventions and reports drift. It does not reformat your code.
- Comments and string contents may produce false positives.
- Always pair this with a real formatter (run in CI) as the source of truth.