All tools
Encoders & Decoders
Encode and decode data in various formats
3 tools
Encode and decode data between formats without sending anything to a server. Base64, URL encoding, HTML entities, JWT inspection — all done client-side so sensitive tokens or payloads never leave your browser.
Base64 Encoder/Decoder
Encode text to Base64 or decode Base64 strings back to plain text.
HTML Encoder/Decoder
Encode special HTML characters to entities or decode HTML entities back to characters.
URL Encoder/Decoder
Encode or decode URLs and query parameters. Handles percent-encoding for safe URL transmission.