Base64 Encoder and Decoder
Translate text or binary files to and from Base64 for development, email and data-transfer workflows.
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How to use Base64 Encoder and Decoder
- Choose or enter the source content in the tool above.
- Review the available format, quality, unit, or privacy controls.
- Run the conversion and verify the result before copying or downloading it.
Useful examples
- Decode a Base64 API value.
- Encode a small file for a data field.
- Download decoded binary output.
Private browser processing
Translate text or binary files to and from Base64 for development, email and data-transfer workflows. Files and entered content stay on this device; ConvertFree does not upload conversion inputs to a processing server.
Limitations
Processing capacity depends on the memory available in your browser and device.
Frequently asked questions
Is this tool free?
Yes. It works without registration or a paid conversion plan.
Does ConvertFree upload my input?
No. The conversion or calculation runs locally in this browser.
Can I use it on a phone?
Yes. The interface is responsive, although large files may require more memory than some mobile devices provide.