Encoding & security
Encoders and decoders for the formats that carry data through URLs, headers and text-only channels. The URL encoder lets you pick between encodeURIComponent, encodeURI, strict RFC 3986 and form encoding, and breaks a query string down into its parameters. The Base64 tool handles UTF-8 text and binary files, the URL-safe alphabet, MIME line wrapping and data: URIs. Tokens and credentials often pass through these tools, so everything runs in your browser and nothing is sent to a server.
2 tools
Percent-encode and decode URLs and query strings, with encodeURIComponent, encodeURI, strict RFC 3986 and form encoding, plus a breakdown of the query parameters.
Encode text or a file to Base64 and decode it back, with correct UTF-8, standard and URL-safe alphabets, optional padding, MIME line wrapping and data: URIs.