File to Base64
Converts any uploaded file into a Base64 string or data URI, and converts a pasted Base64 string or data URI back into a downloadable file.
Drag any file here or click to select (max 5MB)
Base64 / Data URI to File
File to Base64 — Free Online Tool
Converts any uploaded file into a Base64 string or data URI, and converts a pasted Base64 string or data URI back into a downloadable file.
How to use the File to Base64
- Open the tool above — it runs entirely in your browser, so your input never leaves this page.
- Paste or type your input into the field, then press the relevant button (e.g. Encode / Decode, Generate, or Convert).
- Copy the result from the output area with the copy button orCtrl/Cmd + C.
- No signup, no upload, and no tracking — repeat as often as you need.
Frequently asked questions
Is the File to Base64 free to use?
Yes. The File to Base64 is completely free, with no signup, no ads inside the tool, and no hidden limits.
Does the File to Base64 upload my data?
No. The File to Base64 processes everything locally in your browser. Your input is never sent to a server, so it stays private even on shared devices.
Does the File to Base64 work offline?
After the page loads, the File to Base64 runs entirely in your browser, so it keeps working without a network connection.
Free & private — why use this File to Base64
The File to Base64 runs 100% client-side in your browser. Your data is never uploaded to a server, no account is required, and the tool is completely free. It works offline once the page has loaded and is part of a growing collection of privacy-first developer utilities.