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Encoders

UTF-8 Base64 and hex, URL components and parsing, HTML entities, IDN-to-ASCII and quoted-printable byte escapes.

Runs in your browser; nothing is uploaded

UTF-8 text only, up to 1 MiB. Decode requires complete byte formats. URL parsing and IDN conversion do not contact the named host.

Text conversions

Encoders converts UTF-8 text to and from Base64, base64url, hex bytes, URL components, HTML entities and quoted-printable byte escapes. It can parse an absolute HTTP URL into its parts and turn a Unicode domain into its ASCII IDN form. Malformed byte sequences return an error.

Privacy and limits

Conversion happens in your browser and makes no network request. The tool does not store pasted text in the URL. Base64 and hex modes decode to UTF-8 text, so binary files and invalid UTF-8 are not supported here. IDN conversion is Unicode-to-ASCII only; URL parsing reads the string without loading it.

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