Development

Format, minify, and validate JSON to make it easier to read or more compact.

Format and validate a YAML document to improve readability and detect common errors.

Format, minify, and validate an XML document directly in your browser.

Convert JSON data to YAML or YAML data to JSON directly in your browser.

Convert JSON data to XML or XML data to JSON directly in your browser.

Validate a JSON document against a schema and locate every error precisely.

Generate a JSON Schema from a JSON example locally in your browser.

Compare two JSON documents and highlight structural differences.

Generate TypeScript interfaces, types, Zod schemas, or JSON Schema from sample JSON.

Format HTML or remove ordinary comments locally while retaining text whitespace and script content. No page execution or upload is required.

Format or minify CSS to improve readability or reduce file size.

Format queries using the formatter’s general SQL dialect without a database connection. Processing runs locally in your browser.

Format JavaScript, TypeScript or JSX for easier reading without executing code. Processing runs locally in your browser.

Generate a complete cURL command from an HTTP request.

Build custom HTTP headers and get output ready to use in your requests.

Build a complete HTTP API request with method, URL, parameters, headers, and body.

Analyze HTTP headers to review security, caching, CORS, and cookie behavior.

Check an API description in JSON or YAML without uploading it.

Test a regular expression against text and inspect the matches it returns.

Query JSON data with a simple JSONPath expression.

Test an XPath expression against XML and immediately inspect the matching results.

Generate realistic fake datasets in JSON, CSV or SQL.

Create a .gitignore file from presets for your technologies and tools.

Convert Unix permissions between octal and symbolic notation and generate a chmod command.

Find a MIME type from an extension or the other way around.

Convert text between LF, CRLF and CR line endings.

Encode text as Base64 or decode a Base64 string back to its original content.

Generate one or more random UUID v4 identifiers instantly and copy them when needed.

Encode or decode common HTML entities to convert special characters in text.

Build a standard cron expression, understand it and preview its next execution times.