Convert Files to Base64
cross-browser testing tools
World's simplest online base64 file encoder for web developers and programmers. Just select your file or drag & drop it below, press the Convert to Base64 button, and you'll get a base64 string. Press a button – get base64. No ads, nonsense, or garbage. The input file can also be an mp3 or mp4. Works only in modern browsers.
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Drag and drop your file here!
Want to convert a string or text to base64?
Use the Base64 Text Encoder!
Using a File to Base64 Converter in Cross-browser Testing
A file to base64 converter can be useful if you're doing cross-browser testing. For example, if you're using
btoa()functions in your code and your code has to run in older browsers, then these functions won't work as they are relatively new. With this tool, you can convert a tiny image or a music file to base64 and use it in various browser tests. Several other use cases are transmitting binary data over GET requests (in URLs) as well as sending binary attachments over text medium.
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Pro tip: You can use ?input=text query argument to pass text to tools.