Developer tools
Ten developer utilities: encode or decode Base64, URLs, and HTML entities, decode a JWT, generate cryptographic hashes, UUIDs, or QR codes, test a regular expression with live match highlighting, convert Unix timestamps, and format or minify SQL queries. Every one of these runs entirely client-side, with nothing sent to a server.
Developer tools
~ / developer
10 items
Base64 Encode/DecodePaste text or Base64, or drop a file, and switch between encode and decode instantly.Dev
Hash GeneratorPaste text, or drop one or more files, and get MD5, SHA-1, SHA-256, SHA-384, and SHA-512 hashes for each one.Dev
HTML Entity Encode/DecodePaste text or entity-encoded markup and convert it either direction: escape the characters that are meaningful in HTML, or decode named and numeric entities back to plain text.Dev
JWT DecoderPaste a JWT and see its header, payload, and expiry decoded instantly. This tool reads a token - it never verifies one, and says so plainly.Dev
QR Code GeneratorType a URL, plain text, or Wi-Fi network details and get a QR code instantly - no upload, no sign-up, no ads. Download it as a PNG or a scalable SVG.Dev
Regex TesterType a pattern and a test string, and see every match highlighted live, with each capture group broken out.Dev
SQL FormatterPaste any SQL query, or drop a .sql file, and see the beautified and minified versions side by side, updated instantly.Dev
Unix Timestamp ConverterConvert a Unix/epoch timestamp to a readable date, or a date back to a timestamp, in seconds or milliseconds, with both UTC and your local time shown explicitly.Dev
URL Encode / DecodePaste any text, query string, or URL and see the percent-encoded and decoded versions side by side, updated instantly.Dev
UUID GeneratorPick a UUID version and how many you need, and get ready-to-use UUIDs instantly - one at a time or up to 1,000 at once.Dev
Other folders: PDF, CSV & Spreadsheets, JSON & Data Formats, Text, Image