What is Base64 image decoding?
Base64 is a way of representing binary data - like an image - as plain text, using only letters, numbers and a few symbols. It's commonly used to embed images directly inside HTML, CSS, JSON or email templates without linking to a separate file.
This tool reverses that process. Paste a Base64 string or a full data URI and it decodes the text back into a real image file, right in your browser - no server, no upload, and no account needed.
How to convert Base64 to an image
Paste your Base64
Paste a raw Base64 string or a full data URI - the kind that starts with data:image/png;base64,... - into the box above.
Check the preview
The image decodes instantly. Review the live preview along with the detected MIME type, dimensions and file size.
Download or copy
Download the original file, convert it to PNG, JPG or WebP, or copy the image straight to your clipboard.
Frequently asked questions
Paste a Base64 string or a full data URI into the box above. The tool decodes it instantly and shows a live preview, along with the detected format, dimensions and file size.
A raw Base64 string is just the encoded bytes. A data URI wraps that string with a prefix like data:image/png;base64, that tells a browser what kind of file it is. This decoder accepts either one and detects which you've pasted automatically.
Yes. Once your Base64 is decoded, use Download as PNG, Download as JPG or Download as WebP to convert it to that format, or Download Original to keep the exact file you started with.
Yes. It's completely free, works entirely in your browser, and doesn't require an account or any software installation.
No. Decoding happens entirely on your device - nothing you paste is sent to a server.
Usually because it's incomplete, has extra characters mixed in, or isn't actually image data. Make sure you've copied the whole string, including the data:...;base64, prefix if it has one.
It detects and decodes PNG, JPG, WebP, GIF, SVG, BMP and TIFF automatically from the Base64 data itself - no format needs to be specified.