File Base64 Encoder/Decoder
Convert any file to a Base64 data URI, or decode Base64 back to a file.
Upload a file
Drop a file here
Any file type, processed entirely in your browser
Data URI (Base64)
About the File Base64 Encoder/Decoder
Drop any file to instantly get its Base64-encoded data URI, or paste a data URI or raw Base64 string to decode it back into a downloadable file with its detected MIME type and size — all processed locally in your browser.
Examples
Encode an image
photo.pngOutput
data:image/png;base64,iVBORw0KGgo...Related tools
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Frequently asked questions
Version 1.0.0 · Updated 2026-08-11 · Runs entirely in your browser