Encoding

Base64, URL, HTML entities, punycode and other encodings.

Encode text to Base64 in your browser. Full Unicode support, URL-safe variant, line wrapping. Nothing is uploaded, so credentials stay local.

Decode Base64 strings back to readable text. Handles UTF-8, URL-safe Base64 and missing padding. Free, instant and fully in-browser.

Percent-encode text for safe use in URLs and query strings. Choose between full component encoding and full URI encoding. Free online URL encoder.

Decode percent-encoded URLs and query strings back to readable text. Handles UTF-8, plus signs and repeated encoding. Free and private.

Convert characters to HTML entities so they display as text instead of markup. Escapes angle brackets, quotes and ampersands. Free online encoder.

Decode HTML entities such as &amp; &#169; and &nbsp; back into plain characters. Supports named, decimal and hex entities. Free online decoder.

Convert text to binary, hexadecimal, decimal or octal. UTF-8 aware, with a choice of separators and byte grouping. Free online converter.

Convert binary, hexadecimal, decimal or octal codes back into readable text. Tolerates any spacing. Free online binary decoder, runs in-browser.

Apply the ROT13 cipher to any text online. Also supports ROT5 for digits and a custom rotation amount. Free, instant, in-browser.

Decode ROT13 and other Caesar-shifted text. Try every rotation at once when you do not know the shift. Free online ROT13 decoder.

Encode text to quoted-printable, the MIME encoding used in email bodies. Handles UTF-8 and wraps lines at 76 characters per RFC 2045.

Decode quoted-printable text from email source back to readable UTF-8. Handles soft line breaks and =XX escapes. Free online decoder.

Convert international domain names to Punycode (xn--) form. Supports Cyrillic, Chinese, Arabic and emoji domains. Free online IDN converter.

Decode Punycode xn-- domains back to their Unicode form. See what an international domain name really says. Free online decoder.

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