Free developer tools
110 quick tools for code, data, images, PDFs and more. They run in your browser, so your files and text stay on your device.
8 tools
JSON Formatter
Format, validate, minify and sort JSON with exact error positions.
Open toolYAML ⇄ JSON Converter
Convert YAML to JSON and JSON to YAML, with validation and clear error messages.
Open toolCSV to JSON Converter
Turn CSV into JSON (arrays or objects) and back, with delimiter and header options.
Open toolJSON to CSV Converter
Flatten JSON arrays into CSV, pick the columns you want and download the file.
Open toolJSON Schema Validator
Validate JSON against a JSON Schema (draft-07 or 2020-12) with readable error paths.
Open toolJSON to TypeScript
Generate TypeScript interfaces or types from a JSON sample, including nested objects.
Open toolJSON ⇄ TOON Converter
Convert JSON to TOON (Token-Oriented Object Notation) to cut LLM prompt tokens, and back.
Open toolXML Formatter
Pretty-print, minify and validate XML, with the line of any syntax error.
Open tool