Base64 Encode
Encode text to Base64 — payloads, certificates, attachments.
Your data never leaves your browser
This tool runs entirely on your computer. What you paste or drop is never uploaded, never stored and never seen by us — close the tab and it's gone. How we know
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Press Run to see the output. Sign up takes ten seconds — no credit card required.
Worked example
helloaGVsbG8=This example is one of Base64 Encode's test cases — if the tool stopped producing this output, the build would fail.
Questions
- Does it handle non-English characters?
- Yes. It encodes through UTF-8 explicitly, so café, 日本語, and emoji round-trip correctly. Many browser Base64 tools use raw btoa and mangle exactly these.
- Can I encode a certificate or a file?
- Paste text of any kind. For binary files, this tool takes text input — encode the file with your OS tooling instead.
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