Developer tools
Base64 & URL encode/decode
Encode or decode Base64 and URL (percent-encoding) strings — UTF-8 safe, local only.
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Output
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Your data never leaves the browser.
How it works
- Choose Base64 or URL, then encode or decode.
- Paste text — the result updates instantly.
- Copy the output when ready.
FAQ
- Is Unicode supported for Base64?
- Yes — encoding uses UTF-8 before Base64.
- Is input uploaded?
- No. Everything stays in your browser.