Local file conversion

File Base64 Converter

Drop or choose any file and read it as Base64 with FileReader; paste Base64 or a Data URL to restore a downloadable file.

Local

Input

INPUT

Drop a file here, or choose one

Recommended under 50MB to avoid browser memory pressure.

Ready.

Result

OUTPUT
The File Base64 Converter works beyond images and text: PDFs, ZIP archives, APKs, certificates, and other files can be read as a Data URL or raw Base64 through the native FileReader API. For reverse conversion, the page builds a Blob from the pasted Base64 and downloads it locally. Files above 50MB trigger a memory warning, and no file content is uploaded.

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