Formatters & Validators
9 tools to format, validate, and process data in your browser.
JSON Formatter & Validator Popular
Stop squinting at minified JSON! Format and validate JSON instantly with automatic error detection, syntax highlighting, and pretty printing. Catches missing quotes, trailing commas, and invalid syntax. Works with JSON and JSONC. Perfect for debugging API responses and config files. Free, works offline, unlimited usage.
XML Formatter & Validator Popular
When logs or SOAP responses show up as one long line, this XML formatter makes them readable fast. Pretty‑print, validate, minify, or convert to JSON with namespace‑aware parsing. Sort attributes, strip comments or empty nodes, and get precise error diagnostics — quick XML parsing in the browser, no uploads.
YAML Formatter & Validator
Format, validate, and convert YAML data with syntax checking, JSON conversion, and beautification options.
CSS Beautifier & Minifier
Stop reading minified CSS! Format, beautify, and minify CSS code instantly with proper indentation, validation, and optimization. Supports CSS3, media queries, and nested rules with comprehensive formatting options. Free, works offline, unlimited formatting.
HTML Prettier Online - Beautifier & Formatter
Stop struggling with messy HTML! Format HTML code with prettier-style beautification online. Free HTML formatter with intelligent indentation, attribute sorting, validation, and minification — all in your browser. Supports modern HTML5, templates, and components. Free, works offline, unlimited formatting.
JavaScript Beautifier & Minifier
Stop reading minified JavaScript! Format, beautify, and minify JavaScript code instantly with proper indentation, syntax validation, and optimization. Supports ES6+, JSX, and modern JavaScript features with comprehensive formatting options. Free, works offline, unlimited formatting.
SQL Formatter & Beautifier
Stop struggling with unreadable SQL queries! Format and beautify SQL instantly with proper indentation, keyword case conversion, and syntax validation. Supports MySQL, PostgreSQL, Oracle, SQL Server with comprehensive formatting options. Perfect for database development and code reviews. Free, works offline, handles complex queries.
CSV Formatter & Validator
Format, validate, and convert CSV data with support for different delimiters, data type detection, sorting, filtering, and conversion to JSON or table format.
GraphQL Formatter
Format, validate, and minify GraphQL queries, mutations, subscriptions, and schema definitions. Supports syntax validation, auto-formatting with customizable options, and error detection for GraphQL operations.
JSON Formatter Popular
Stop squinting at minified JSON! Format and validate JSON instantly with automatic error detection, syntax highlighting, and pretty printing. Catches missing quotes, trailing commas, and invalid syntax. Works with JSON and JSONC. Perfect for debugging API responses and config files. Free, works offline, unlimited usage.
XML Formatter Popular
When logs or SOAP responses show up as one long line, this XML formatter makes them readable fast. Pretty‑print, validate, minify, or convert to JSON with namespace‑aware parsing. Sort attributes, strip comments or empty nodes, and get precise error diagnostics — quick XML parsing in the browser, no uploads.
YAML Formatter
Format, validate, and convert YAML data with syntax checking, JSON conversion, and beautification options.
CSS Beautifier & Minifier
Stop reading minified CSS! Format, beautify, and minify CSS code instantly with proper indentation, validation, and optimization. Supports CSS3, media queries, and nested rules with comprehensive formatting options. Free, works offline, unlimited formatting.
HTML Prettier Online - Beautifier & Formatter
Stop struggling with messy HTML! Format HTML code with prettier-style beautification online. Free HTML formatter with intelligent indentation, attribute sorting, validation, and minification — all in your browser. Supports modern HTML5, templates, and components. Free, works offline, unlimited formatting.
JavaScript Beautifier & Minifier
Stop reading minified JavaScript! Format, beautify, and minify JavaScript code instantly with proper indentation, syntax validation, and optimization. Supports ES6+, JSX, and modern JavaScript features with comprehensive formatting options. Free, works offline, unlimited formatting.
SQL Formatter & Beautifier
Stop struggling with unreadable SQL queries! Format and beautify SQL instantly with proper indentation, keyword case conversion, and syntax validation. Supports MySQL, PostgreSQL, Oracle, SQL Server with comprehensive formatting options. Perfect for database development and code reviews. Free, works offline, handles complex queries.
CSV Formatter
Format, validate, and convert CSV data with support for different delimiters, data type detection, sorting, filtering, and conversion to JSON or table format.
GraphQL Formatter
Format, validate, and minify GraphQL queries, mutations, subscriptions, and schema definitions. Supports syntax validation, auto-formatting with customizable options, and error detection for GraphQL operations.
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› About formatters & validators
Format, validate, and beautify data in various formats Every tool runs client-side, so you can work with internal or sensitive content without upload workflows.
Common workflows include validation, quick conversion, and cleanup for API payloads, docs, spreadsheets, and operational data.