Developer tools
Encoders, formatters, hashes and converters – safe for secrets, nothing leaves your browser.
JSON Formatter
Paste messy JSON, get it pretty, validated and minified – with the exact error position when it's broken.
🔤Base64 Encode & Decode
Convert text or files to Base64 and back instantly – emoji and accented characters included.
🔤Base64 Encoder
Turn text, images or any file into Base64 you can paste into JSON, CSS or HTML.
🔤Base64 Decoder
Paste a Base64 string and read what is inside – text, JSON or a downloadable file.
🔗URL Encode & Decode
Percent-encode values for links and APIs, decode messy tracking URLs, and see every query parameter in a table.
🔗URL Encoder
Safely put spaces, &, ?, # and non-English characters into URLs and API calls.
🔗URL Decoder
Make long tracking links and redirect URLs readable – every parameter decoded and listed.
#️⃣Hash Generator
Every common hash of your text or file at once – paste the published checksum to confirm a download is genuine.
#️⃣MD5 Hash Generator
Get the 32-character MD5 checksum of text or a file in milliseconds.
#️⃣SHA-256 Hash Generator
Compute the SHA-256 fingerprint used by software releases, Git LFS and blockchains.
#️⃣SHA-1 Hash Generator
Get the 40-character SHA-1 digest still used by Git object IDs and legacy checksums.
#️⃣SHA-512 Hash Generator
Generate the 128-character SHA-512 digest for high-assurance integrity checks.
🆔UUID Generator
Cryptographically random v4 or sortable v7 UUIDs, one or a thousand, ready to paste into code or a database.
🆔GUID Generator
Fresh GUIDs in the format Windows, .NET and SQL Server expect – copied in one click.
🔍Regex Tester
Write a pattern and watch matches highlight as you type, with every group and a replace preview.
📊CSV to JSON Converter
Paste or drop a spreadsheet export and get clean JSON – commas and line breaks inside quotes handled correctly.
📊JSON to CSV Converter
Turn API responses into a spreadsheet: nested fields become columns like address.city.
⏱️Unix Timestamp Converter
Paste a timestamp from logs or an API and see the exact date in UTC, ISO 8601 and any time zone.
⏱️Epoch Converter
See the current epoch ticking live and convert any epoch value to a human-readable date.
🔐JWT Decoder
Inspect a JSON Web Token without sending it to a third-party site – claims, expiry and algorithm at a glance.
🎨Color Converter
Type any colour format and get all the others – plus contrast ratios against white and black for accessible text.
🎨HEX to RGB
Paste a hex code from a design file and get rgb() values ready for CSS, Android or Swift.
🎨RGB to HEX
Turn rgb(…) values from browser dev tools or design apps into a compact hex code.
🏷️HTML Entity Encoder & Decoder
Safely show code snippets in HTML, or turn "-riddled text back into readable characters.