JSON formatter
Format, validate and minify JSON without rounding large numbers. Explore a read-only tree, find text and download locally.
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Developer tools
Format JSON, convert CSV, encode text and inspect hashes, timestamps and regular expressions.
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Available tools
CSV to JSON
Convert comma-, semicolon- or tab-separated data to JSON. Keep leading zeros and text values, inspect the result and download locally.
Developer toolsJSON to CSV
Convert JSON object arrays to CSV without rounding numeric tokens. Combine columns, download locally and import IDs into spreadsheets as text.
Developer toolsBase64 encoder & decoder
Encode Unicode text as Base64 or decode Base64 back into readable text.
Developer toolsURL encoder & decoder
Encode a URL component or decode percent-encoded text without uploading it.
Developer toolsHTML entity encoder
Escape text for HTML or decode HTML entities into their original characters.
Developer toolsSHA hash generator
Calculate SHA-256, SHA-384 or SHA-512 hashes of text using Web Crypto.
Developer toolsUnix timestamp converter
Convert Unix seconds or milliseconds to a date, or an ISO date to a timestamp.
Developer toolsRegex tester
Test JavaScript regular expressions with matches, offsets and capture groups.
Developer toolsMarkdown preview
Write Markdown, see a safe rendered preview and copy the generated HTML.
Developer toolsNumber base converter
Convert whole numbers between binary, octal, decimal and hexadecimal.
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