Base64 File Converter - Convert Files to Base64 & Data URI Online
Convert any file (images, fonts, audio, PDF) into Base64 Data URI strings or decode Base64 back into downloadable binary files.
This tool runs in your browser.
Processed locally in your browser.
How to use
- 01Enter or upload the source data.
- 02Run the tool in your browser.
- 03Review, copy, or download the result.
FAQ
What are the main benefits of Base64 encoding files?
It embeds binary assets like icons and fonts directly inside HTML, CSS, or JSON payloads as text, eliminating round-trip HTTP requests.
Does Base64 encoding increase file payload size?
Yes. Base64 encoding increases overall payload size by approximately 33% compared to raw binary data, so it is ideal for small assets.
Are my converted documents uploaded to remote servers?
No. Conversion uses native browser FileReader APIs client-side. Your binary files never leave your local machine.