Toolgeist › Developer

Base64 to File Converter — Decode to Any File Type

Paste a Base64-encoded string to decode it back into a downloadable file of any type — not limited to images or PDFs — useful for recovering any binary payload that was Base64-encoded for transport, like an API attachment or embedded asset.

How to use Base64 File

1. Paste the Base64 string or data URI.
2. Set the target filename and extension if not auto-detected.
3. Download the decoded file.

Frequently asked questions

How does it know what file type to produce?

If a data URI with a MIME type prefix is provided it uses that; for raw Base64 with no type information, you set the filename and extension yourself.

Is there a file size limit?

Large files work, though very large Base64 strings are bounded by your browser's available memory rather than a server-side limit.

Is my data uploaded anywhere?

No. Decoding happens entirely in your browser.

Related Developer tools

• Text to Hex
• JSON Explorer
• CSS Variable Auditor
• Commit Message Form
• Git Hook Builder
• JSON to C#

Also searched for: base64 to file converter online · decode base64 to any file type · base64 file recovery tool

Browse all 738 free tools on Toolgeist →