Developer Tools
Everyday utilities for writing and shipping code.
JSONJSON Formatter
Format, validate, and minify JSON instantly.
Base64Base64 Encode/Decode
Encode text to Base64 or decode Base64 back to text.
URL EncoderURL Encode/Decode
Encode or decode URL components safely.
UUIDUUID Generator
Generate random UUID v4 identifiers in bulk.
Regex Tester
Test a regular expression against sample text and see matches highlighted.
Regex Builder
Build a regular expression by stacking plain-English rule blocks — no regex knowledge required.
UTM BuilderUTM Link Builder
Add UTM tracking parameters to a URL for campaign tracking.
JWTJWT Decoder
Decode a JWT's header and payload — no signature verification.
Diff CheckerText Diff Checker
Compare two blocks of text and see line-by-line differences highlighted.