Encoded file converter

File to Base64 Converter

Encode a file as Base64 text for testing, data transfer, config values, or embedding small assets.

Open the converter

Not sure whether you need Base64 or a Data URL? Read the comparison guide.

How to convert with this File to Base64 converter

  1. Open the converter and choose your output format.
  2. Drop your file onto the upload area or choose it from your computer.
  3. Click Start Converting and wait for your browser to process the file.
  4. Download the finished file and review the result before using it.

Why browser-based conversion helps

Your files are processed on this device instead of being sent through a server upload queue. That can be faster for quick jobs and better for private documents, images, and data files you do not want sitting in someone else's storage.

Base64 output is larger than the original file, so it is best for small files.

Frequently asked questions

What is Base64?

Base64 is text that represents binary file data using letters, numbers, and symbols.

Is my file uploaded?

No. The encoding is designed to happen locally in your browser.

Why is the result larger?

Base64 text usually takes more space than the original binary file.

Can I use it for images?

Yes, but Data URL output is usually easier for directly embedding images.

Need a complete browser-ready value? Try the File to URL converter. The Base64 and Data URL guide explains which output to choose.