Base64
Encode and decode Base64 / Base64URL text and files, Unicode-safe.
Runs entirely in your browser: nothing you paste or upload is sent to a server.
Related: base64, encode, decode, base64url, atob, btoa, file to base64
More encoders & decoders
- URL Encoder / Decoder — Percent-encode and decode URI components with malformed-escape detection.
- HTML Entities — Escape text into HTML-safe entities and decode named or numeric entities.
- JWT Decoder — Decode JWT header and claims, explain expiry, and optionally verify signatures.
- Unicode Escapes — Convert text to code points and \u, \x, &#x; or U+ escapes — and back.
- Text ⇄ Binary / Hex — Represent text as binary, hex, octal or decimal bytes and convert back.
- UTF-8 Inspector — Hex dump of UTF-8 / ASCII bytes alongside the characters they encode.
- Hash Generator — SHA-1/256/384/512 digests and HMACs via Web Crypto, plus MD5 as a legacy checksum.
- Data URI — Create data: URIs from files or text and decode them with a safe preview.