MakeMyStats

Tools / Base64 Data URL

Base64 Data URL

Decode base64 data URLs to downloadable files with detected MIME type, or encode any file as a base64 data URL for embedding.

Runs entirely in your browser

How to use Base64 Data URL

  1. Pick a mode

    Encode mode turns a file into a base64 data URL. Decode mode turns a data URL back into a file.

  2. Provide the input

    In Encode mode, drop any file. In Decode mode, paste a data: URL.

  3. Read the metadata

    Detected MIME type, size, and (for images) a preview are shown.

  4. Copy or download

    Copy the data URL to your clipboard, or download the decoded file.

Frequently asked questions

Does this tool upload my file?
No. Every parse, transform, and download runs entirely in your browser using JavaScript and Web Workers. The file never leaves your device — there is no upload endpoint and no server-side processing.
What's the size limit on a data URL?
Base64 encoding inflates the file by about 33 percent. Browsers and HTML parsers usually choke past a few megabytes — use data URLs for icons and small images, not for video.
Why does my decoded file have a generic name?
Data URLs don't carry filenames — only MIME type and the encoded bytes. The tool picks an extension from the MIME type so the download is recognizable.
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