Developer & Data
Format and validate JSON, encode and decode Base64 and URLs, diff two blocks of text, hash strings, and convert timestamps and CSV — all in the browser.
JSON Formatter & Validator
Beautify, minify, and validate JSON with clear, line-pointed error messages.
/json-formatterBase64 Encode & Decode
Convert text to and from Base64 with full UTF-8 support.
/base64URL Encode & Decode
Percent-encode text for URLs or decode %20 escapes back to readable text.
/url-encoderDiff Checker
Compare two blocks of text and see added, removed, and changed lines.
/diff-checkerHash Generator (SHA-256, SHA-1)
Compute SHA-256, SHA-1, and SHA-512 hashes of any text, locally.
/hash-generatorUnix Timestamp Converter
Convert Unix epoch seconds or milliseconds to a human date and back.
/timestamp-converterCSV to JSON Converter
Turn CSV rows into a JSON array of objects, and JSON back into CSV.
/csv-json