Base64 Encode / Decode
Encode and decode text or files with Base64.
About the Base64 Encode / Decode
Convert text and files to and from Base64 encoding. Free online Base64 encoder and decoder.
The Base64 Encode / Decoderuns entirely in your browser — your data is never uploaded to a server, so it stays private and works instantly, even offline. It's completely free, requires no sign-up, and works on desktop and mobile.
Frequently Asked Questions
- What is Base64 encoding?
- Base64 encoding converts binary data into an ASCII string format using 64 printable characters. It is commonly used for embedding images in HTML/CSS, data URLs, and transmitting binary data in text-based protocols.
- How do I convert a file to Base64?
- Upload your file or paste text, then click Encode. The Base64 output can be copied or downloaded.