Base64 Encoder/Decoder — Free Online
Use Base64 Encoder/Decoder online for free. Fast, secure processing — files are deleted immediately after download. No sign-up required.
Text/File to Encode
Paste text or upload a file
💡 Base64 Encoding Tips
- Base64 is commonly used to encode binary data for transmission over text-based protocols
- URL-safe Base64 replaces + with - and / with _ for safe URL usage
- Encoded output is approximately 33% larger than the original
- All encoding and decoding happens in your browser - no data is sent to servers
Frequently Asked Questions about Base64 Encoder/Decoder
- Is Base64 Encoder/Decoder completely free to use?
- Yes, Base64 Encoder/Decoder is 100% free with no sign-up, no watermarks, and no usage limits.
- Are my uploaded files safe and private?
- Yes. Files are uploaded over HTTPS, processed securely on our servers, and permanently deleted immediately after your download. We never store, view, or share your files.
- What is the maximum file size?
- You can upload files up to 5 MB. For larger files, consider compressing or splitting them first.
- Is the encoding/decoding fully reversible?
- Yes, all encoding operations are fully reversible. Use the same tool or a corresponding decoder to reverse the operation.
- Does Base64 Encoder/Decoder work on mobile and tablet?
- Yes, Base64 Encoder/Decoder is fully responsive and works in all modern browsers on desktop, tablet, and mobile.
Files are processed securely and permanently deleted after download. Never stored or shared.