File to Base64 – Private Converter
Convert any file (image, PDF, etc.) to Base64 in your browser. Never uploaded. Free.
No uploads. No account. Free to use.
Any file to a Base64 data URL.
Drop a file
Nothing is uploaded. Processing stays on this device.
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- Files never leave your device
- Runs entirely in your browser
- No signup required
- Free
What is File to Base64 – Private Converter?
Need a data URI or Base64 payload of a local file? Convert it without the file ever leaving your device.
Key features
- Any file type
- optional data-URI prefix
- copy or download .txt
- progress for larger files
- client-side FileReader.
How to use it
- Drop file.
- Base64 appears.
- Copy or save.
When to use it
Upload converters expose the file. Ours does not.
Frequently asked questions
Size limit?
Browser memory. Images only? No — any file. Uploaded? Never.
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