Base64 Decode Text
Paste a Base64 string and get the original text. Invalid padding or characters are reported instead of producing garbage.
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Nothing you enter here is sent anywhere. There is no file and no request to our server - the work is done in your browser and disappears when you close the page.
How It Works
- Paste — Type or paste your text into the box above.
- Configure — Choose the transformation you want.
- Run — Press the action button; the counters update as you type.
- Take it — Copy the result or download it as a file.
Frequently Asked Questions
How is Unicode handled?
Text is encoded through UTF-8 first, so emoji and accented characters survive a round trip. The legacy ASCII shortcut btoa() is not used directly.
Is Base64 encryption?
No. Base64 is a reversible encoding, not a security mechanism — anyone can decode it. Never use it to protect secrets.