Yes, completely free with no sign-up. Encode and decode unlimited Base64 strings and files.
No, all encoding and decoding happens in your browser. Your files and data never leave your device.
Select "Encode" to convert text or files to Base64, or "Decode" to convert Base64 strings back. For encoding, paste text or upload an image/file. For decoding, paste the Base64 string (including data URL prefix for images). The converted result appears instantly - for images you will see both the Base64 string and a preview. Click the copy button to copy the result, or use the download button to save decoded images.
Yes! Upload any image and get a Base64 data URL. Use it in img src attributes or CSS backgrounds for inline embedding.