Formatters & Validators

Beautify and validate JSON with indentation, error detection, and a collapsible tree view.

Compress JSON to a single line by removing all unnecessary whitespace.

Check JSON for syntax errors and get the exact line and column of any problem.

Beautify HTML with clean indentation, plus a live preview of the markup.

Minify HTML by stripping comments and collapsing whitespace.

Beautify CSS with consistent indentation and spacing for readable stylesheets.

Minify CSS by removing comments and whitespace for smaller stylesheets.

Beautify JavaScript with proper indentation and line breaks, string-safe.

Minify JavaScript by stripping comments and collapsing whitespace, safely.

Beautify and minify XML with indentation and a validity check.

Validate XML for well-formedness and see the first parse error.

Format, re-indent, and validate YAML with clear parse errors — all in your browser.

Convert CSV to JSON with delimiter choice, header detection, and Unicode support.

Convert a JSON array to CSV with automatic headers and nested-key flattening.

Beautify and indent SQL with keyword casing options and preserved comments.

Open CSV or TSV data in an editable table: edit cells, add or remove rows and columns, sort, filter and export.

Validate JSON against a JSON Schema (Draft 2020-12 subset) with JSON paths, schema paths and clear messages.

Test JSONPath expressions with members, wildcards, indexes, unions, slices and recursive descent.

Evaluate XPath 1.0 expressions against XML with namespace prefixes and safe parsing.