Free online Base64 encoder and decoder. Convert text to and from Base64 with full UTF-8 support, entirely in your browser — nothing is uploaded. Handy for development and testing.
Base64 turns arbitrary data (images, files, binary) into plain text so it fits where only text is allowed — embedding a small image in CSS/HTML (a data URI), placing it in JSON, or tucking it into email and config files. It isn't encryption, just a different representation that anyone can reverse.
Developers embed small icons to save a request, encode credentials or config for transport, or decode a Base64 field returned by an API. When you need to see what's inside, decoding reveals it instantly — handy for debugging.
Because anyone can decode Base64 easily, never use it to 'hide' a password or secret — that's no lock at all. Use real encryption to protect content. For sensitive strings, prefer a tool that runs in the browser without uploading. Need hashing instead? Use our SHA hash tool.
Yes, it uses UTF-8 so non-Latin text encodes correctly.
Yes, all conversion happens in your browser and nothing is uploaded.