Tools

Conversion Tools

Base64 to File Converter

Decode Base64 (Data URI or pure) back to the original file - image, PDF, ZIP, audio, video or any binary - and download it instantly.

Any file type Auto MIME detect Preview No upload
When the input is a Data URI or recognizable binary, the type is detected for you.
File type-
Extension-
Estimated size-
Decoded file preview will appear here.

Decode Base64 back to a file

Paste a Base64 string - either a Data URI like data:application/pdf;base64,JVBERi0xLj... or just the raw Base64 payload - and this tool reconstructs the original file in your browser. Images, PDFs, audio and video are previewed inline; everything else is offered as a download. Decoding happens locally using the standard atob() JavaScript API, so your data never leaves your device.

Questions

Can I decode any Base64 string?

Yes. Both Data URIs and pure Base64 text are supported, and the tool auto-detects common file types from magic bytes when no MIME type is provided.

What file types are supported?

Any file: JPG, PNG, WebP, GIF, PDF, TXT, JSON, DOCX, XLSX, MP3, MP4, ZIP and other binary formats.

Is my Base64 sent to a server?

No. Decoding happens locally in your browser. Nothing is uploaded.