Base64 Encode / Decode
Convert text to and from Base64.
100% in your browser — nothing uploadedAbout this tool
Encode text to Base64 or decode Base64 back to text, with full Unicode support. Processed locally in your browser.
- Files are processed on your device — nothing is uploaded.
- No account, no watermark, no daily limits.
- Works offline once the page has loaded.
Frequently asked questions
- Is my text uploaded?
- No. Encoding and decoding happen in your browser — nothing is sent anywhere.
- Does it support emoji and other languages?
- Yes. It uses UTF-8, so Unicode text round-trips correctly.
- Why did decoding fail?
- The input isn't valid Base64. Check for stray spaces or missing characters.