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Base64 Decoder

Decode Base64 as you type. Everything runs in your browser, so your data never leaves your device.

Base64

Decoded text

Decode Base64 Strings Back to Readable Text or Bytes

Paste a Base64 string to recover the original content. This is handy for reversing inline assets, inspecting API payloads, and validating that upstream systems are encoding data as expected.

Common Uses

  • Debugging: Decode tokens, small files, or thumbnails embedded in JSON.
  • Data recovery: Pull human‑readable text back from logs or config files.
  • Content checks: Confirm that an image or PDF wasn’t truncated or corrupted.

Troubleshooting Tips

  • If decoding fails, check for unexpected whitespace or missing padding.
  • Ensure the string uses the expected variant (standard vs URL‑safe).
  • Large payloads are better handled as files rather than pasted text.

Frequently asked questions

What if my Base64 has no padding?

Some variants omit = padding. Try the URL‑safe/lenient option if available.

Can I decode images?

Yes. You’ll get the original bytes which can represent images, PDFs, etc.

Why do I see garbled text?

The decoded bytes may not be UTF‑8 text; save as a file instead.