Encoding Tools

Encode and decode Base64, URL, HTML entities, binary, hex and more — every conversion runs client-side.

Base64 Encoder & Decoder

Encode and decode Base64 online for free. Unicode-safe Base64 conversion with optional URL-safe output — runs entirely in your browser.

URL Encoder & Decoder

Encode and decode URLs and query parameters online for free. Percent-encode special characters safely, directly in your browser.

JWT Decoder

Decode and inspect JWT tokens online for free. View header, payload and claims with readable dates, check expiry, verify HMAC signatures — locally in your browser.

JWT Encoder

Create and sign JWT tokens online for free. HS256/384/512 HMAC signing via Web Crypto — the counterpart to our JWT decoder, fully local.

Unicode Converter

Convert text to Unicode code points and back online for free. U+ notation, JS escapes, HTML entities, UTF-8/UTF-16 bytes — with a per-character inspector.

HTML Entity Converter

Encode and decode HTML entities online for free. Named, numeric or minimal escaping for accented characters, symbols and markup — two-way conversion.