Free Base64 Encoder/Decoder Online
Easily encode text or files to Base64, or decode Base64 back to its original format. Developer-friendly and secure.
Files never uploaded
Instant processing
100% free
Frequently Asked Questions
What is Base64 encoding?▾
Base64 is a way to represent binary data in an ASCII string format. It is commonly used to embed images directly into HTML/CSS files, or to safely transmit data across networks.
Can I convert images to Base64?▾
Yes! Use the file upload tab to select an image, PDF, or any other file. We will instantly encode it into a Base64 data URI that you can paste into your code.
Is there a file size limit?▾
Because processing happens in your browser's memory, very large files (e.g., over 50MB) might slow down or crash the tab. For standard images and documents, it works perfectly.