JSON formatter New
Format, validate and minify JSON, and explore it in a collapsible tree with a filter for keys and values. Errors are shown by line and column.
Free online developer tools
Format JSON, encode Base64 and URLs, generate hashes and convert number bases or CSS units. Free developer tools that run in your browser.
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JSONPath tester New
Query JSON with JSONPath: select fields, filter arrays on conditions and sort the results. Includes examples and a cheat sheet.
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JSON to CSV converter New
Turn a JSON array into a table you can sort and filter, and download it as CSV for Excel or Google Sheets. Converts CSV back to JSON too.
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JSON diff New
Compare two JSON documents and see every added, removed and changed value with its path. The order of keys does not matter. Runs locally.
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JSON to TypeScript New
Generate TypeScript interfaces or types from a JSON example, with nested objects, arrays, optional keys and union types. Copy them in one click.
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Data converter New
Convert data between JSON, YAML, XML, CSV and TSV. Paste text or open a file, check the result and download it. Runs in your browser, nothing is sent.
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Base64 encoder
Encode text or files to Base64 and decode Base64 back to text. Supports UTF-8, emoji and the URL-safe alphabet.
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URL encoder New
Percent-encode text for use in a URL or decode an encoded URL. Choose between encoding a query value or a complete URL.
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HTML entities
Encode special characters to HTML entities, decode entities back to text or escape HTML. Choose named or numeric references.
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Hash generator New
Generate MD5, SHA-1, SHA-256, SHA-384 and SHA-512 hashes of text or files in your browser, and compare them with a checksum.
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Number base converter New
Convert numbers between binary, octal, decimal, hexadecimal and any base from 2 to 36, without losing precision on large numbers.
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CSS unit converter New
Convert CSS units: px to rem, em, pt, pc, cm, mm and inches and back, with an adjustable root font size.