Encoders, formatters, generators and everyday dev utilities.
Beautify, minify and validate JSON with error messages.
Encode text to Base64 or decode Base64 back to text.
Percent-encode or decode URLs and query parameters.
Generate secure random UUID v4 identifiers in bulk.
Generate SHA-1, SHA-256, SHA-384 and SHA-512 hashes.
Convert Unix timestamps to human dates and back.
Check text/background contrast against WCAG accessibility levels.
Generate harmonious colour palettes from a base colour.
Decode and inspect JSON Web Token header and payload.
Design CSS gradients visually and copy the code.
Build and understand cron schedules in plain English.
Compare two texts and highlight the differences line by line.