Decode standard Base64 into its original bytes. Preview readable UTF-8 text or download the original binary data.
Input
Paste text (up to 1,048,576 characters) or choose a UTF-8 text file (up to 100 MB).
0 characters · Input is editable; whitespace is preserved.
Standard Base64 only. Line breaks and whitespace are accepted. Remove any data: URI prefix first.
Output
Your result will appear here after conversion.
Your text and files stay in your browser. No account required.
Frequently Asked Questions
Is Base64 decoding with PDFPilot really free?
Yes. Base64 Decode is completely free to use, with no sign-up or account required.
Are my files uploaded to a server?
No. The decoding runs entirely in your browser. Your file is never uploaded to PDFPilot's servers.
Why does the output download as decoded.bin instead of the original filename?
Base64 text encodes raw bytes without the original filename or file type. Binary output defaults to decoded.bin. You can set the Download filename, including the correct extension, before downloading.
What happens if the text isn't valid Base64?
You'll get a clear error message rather than a corrupted or empty file.
Can I decode a data: URI directly?
Not the whole URI — strip the "data:...;base64," prefix first and upload just the Base64 portion after the comma.
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