Base64 Encode / Decode
Encode and decode text or binary files to/from Base64. Supports URL-safe mode and Data URL generation. All processing happens in your browser.
Drop a file to use as encode input
How to use
Paste text or a Data URL
Choose encode or decode
Copy the result
Frequently asked questions
- Are my files sent to any server?
- No. All processing happens entirely inside your browser. The contents, filenames, and metadata of your files are never sent to any external server.
- Is it completely free? Do I need to sign up?
- All features are completely free. No account, no registration — open the page and start using it immediately.
- Does it work offline?
- Yes. OFFiler is a PWA. Once you've loaded the page, the main tools work even without an internet connection.