Encode & Decode

HTML Entity Encoder & Decoder

Encode text to HTML entities or decode entities back to plain text in your browser. Nothing you paste is sent anywhere.

Unicode / Escape Converter

Convert text to uXXXX, u{…}, U+XXXX code points or HTML numeric entities and back. Astral-safe, runs entirely in your browser.

URL Encoder & Decoder

Percent-encode or decode text for URLs, with component and full-URI modes. Runs entirely in your browser, nothing is sent anywhere.

JWT Decoder

Decode a JSON Web Token in your browser. Read the header, payload and claims like exp and iat. Nothing you paste is sent anywhere.

Base64 Encoder & Decoder

Encode text to Base64 or decode it back, with correct UTF-8 and URL-safe base64url support. Runs entirely in your browser.