Base64 to File Decoder
Use Base64 to File Decoder, review the result, and keep the original until the output is checked.
How to use Base64 to File Decoder
- Use the Paste Text tab for a string in hand, or the Upload File tab for a .b64 or .txt file.
- Tick URL Safe Base64 if the string uses - and _ instead of + and /.
- Type the name you want into Output Filename, including the extension - the box does not add one for you.
- Decode Text builds the file and shows it under File Information, then Download File saves it.
What Base64 to File Decoder actually does to your file
This page writes bytes rather than text, so whatever the string encodes - image, archive, PDF - comes back as a real file, which is why naming it explicitly matters. Only text files round-trip here: an upload is read as text, so point a binary file at the encode page instead. With no filename typed, the extension is guessed from the detected type and falls back to .bin.
Base64 to File Decoder FAQ
What does Base64 to File Decoder do?
Convert Base64 to file with our easy-to-use online tool. Fast decoding and immediate file download. Free and secure service.
Which files work with Base64 to File Decoder?
It takes Base64 text and returns the decoded file. The exact types and per-file limit are shown beside the controls.
Is Base64 a way to protect data?
No. Base64 is reversible by anyone who has the text and adds about a third to the size. Treat it as an encoding, not as encryption or compression.
Will my original file be changed?
No. You paste text or open a file to read it, the result appears in the other pane, and only what you copy or download leaves the page.
How is my file processed?
It is not uploaded. The processing is done locally by the encoder bundled with this page, so the practical ceiling is your device's memory and the limit shown beside the uploader - no queue, no account, no copy on a server.
Is the Base64 to File Decoder free?
Yes. The Base64 to File Decoder is free with no trial limit, subscription, or watermark on downloads. You can use it for personal and commercial projects without creating an account.