JSON
A JSON pit stop: prettify, minify, validate, transform to TypeScript, YAML, CSV and more.
18 free json tools. Every tool runs in your browser, works without an account, and processes files locally whenever the browser allows it.
By the utils.sbs team · Reviewed November 2026
The shelf
All json tools
18 tools · updated for 2026
- JSON FormatterpopularFormat and beautify JSON with 2, 4 or 8-space indentation.
- JSON MinifierRemove all unnecessary whitespace from JSON.
- JSON ValidatorValidate JSON and pinpoint syntax errors.
- JSON SorterSort object keys recursively for stable output.
- JSON to TypeScriptCreate nested TypeScript interfaces from JSON.
- JSON to YAMLConvert JSON to human-friendly YAML.
- JSON to XMLConvert JSON structures into XML markup.
- JSON to CSVFlatten JSON records into CSV rows.
- JSON to JavaScriptConvert JSON to a JavaScript module or const.
- JSON EscapeEscape text for safe inclusion in JSON strings.
- JSON UnescapeUnescape JSON string escape sequences.
- JSON DiffCompare two JSON documents and highlight changes.
- JSON FlattenFlatten nested JSON keys into dot notation.
- JSON Key ExtractorList every unique key used in a JSON document.
- JSON Size AnalyzerMeasure JSON size and find the largest values.
- JSON to Query StringSerialize a JSON object into URL query parameters.
- Query String to JSONParse URL query parameters into JSON.
- Remove Nulls from JSONRecursively strip null and empty values.
How this shelf works
About json tools
JSON tools handle the small, repeatable jobs that show up between real work: format, query, convert. They are built as focused utilities, so each page does one job without asking you to create an account or install software.
Open a tool, add your input, adjust the settings, and download the result. Processing happens in the browser using the platform APIs available for that file type. Files are not uploaded to a server, so the tool keeps working offline once the page has loaded.
Looking for something else? Browse the full tool index or search the catalogue from the homepage.
JSON tool questions
Are json tools free?
Yes. Every json tool on utils.sbs is free, requires no account, and has no per-file or per-use charge.
Are my files uploaded when I use a json tool?
No. The tools are designed to process input in the browser whenever the platform API allows it. Files are not uploaded to a server for processing.
Do I need to install anything to use these tools?
No. Everything runs in a modern web browser. Open a tool page, use the workspace, and download the result.
How do I choose the right json tool?
Each tool page describes what it does, its input and output formats, the engine it uses, and its limitations. Start with the description that matches your job, then open the tool page for the workspace and step-by-step guide.