text Tool · Free
Free Base64 Encoder & Decoder Online
Encode and decode Base64 strings online free. Supports text and file input. Results appear instantly in your browser. No sign-up, no upload to server.
🔒100% Private: Your files are processed entirely in your browser and never uploaded to any server.
Frequently Asked Questions
What is Base64?
Base64 is an encoding scheme that converts binary data to a text representation using 64 ASCII characters. It's commonly used in email, data URLs, and APIs.
Can I encode files to Base64?
Yes — use the 'File' input tab to encode any file to its Base64 data URI representation.
Is special character encoding supported?
Yes, the encoder correctly handles Unicode and special characters via URI encoding.
Is my data sent to a server?
No — all encoding/decoding happens in your browser using native JavaScript APIs.
Is it free?
Yes, completely free with no sign-up.