Base64 Encoder & Decoder
Encode text or files to Base64 and decode Base64 back to text in your browser, with Unicode and Base64URL support.
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Privacy Notice: All files and input data are processed 100% locally inside your browser. No files are uploaded to our servers.
How to Use:
- Type or paste text, or choose a file, to encode it to Base64.
- Paste a Base64 string and click Decode to get the original text back.
- Toggle Base64URL if you need URL-safe output.
Key Features:
- Correct UTF-8/Unicode handling in both directions
- Optional Base64URL (URL-safe) encoding
- Encode files locally, not just text
- Flags invalid Base64 input instead of failing silently