Base64 tool
Base64 to File
Decode Base64 to a downloadable file online without server upload. Detect images, PDFs, ZIP files, and binary data locally in your browser.
Decode Base64 bytes and download the result.
Detected MIME type appears after decoding when the bytes match a known file signature.
All processing runs in the browser. Your input never leaves this device.
Decode Base64 into a downloadable file
This route is for Base64 payloads that represent binary data rather than text. Paste the Base64 value, decode it locally, then download the bytes as a file from your browser.
- PDF values usually start with decoded bytes that match %PDF.
- PNG, JPEG, GIF, WebP, SVG, ZIP, and other signatures are detected when possible.
- If the source is a data URI, keep the prefix because it can improve MIME detection.
When to use the text decoder instead
Use Base64 to Text when the original payload is human-readable text. Use Base64 to File when the output should be saved or inspected as bytes.
No upload file recovery
The selected or pasted payload is read with browser APIs and the download is generated as a local blob. There is no remote decoded-file URL, upload queue, or temporary server copy to clean up afterward.
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