Advanced Base64 Encoder / Decoder
Type/paste text, or upload a file to encode it into Base64. Decode Base64 back to text or preview it as an image.
Drag & Drop a file here to encode to Base64
or click to select a file (Images, PDFs, etc.)Image Preview
What is Base64?
Base64 is a group of binary-to-text encoding schemes that represent binary data in an ASCII string format. It's commonly used when there is a need to encode binary data that needs to be stored and transferred over media that are designed to deal with textual data.
This tool performs operations entirely in your browser, guaranteeing that your sensitive data is never transmitted over the network. You can even drag and drop local files to convert them directly into Base64 Data URLs.
Frequently Asked Questions
Is this tool secure for my files?
Yes! Our Advanced Base64 tool runs entirely within your web browser using HTML5 File APIs. Your files and text never leave your computer, making it perfectly safe for sensitive data.
Can I preview Base64 Images?
Yes. If you paste a Base64 string representing an image (with or without the Data URL prefix), our tool will attempt to render it in the Image Preview area automatically when you hit Decode.