Base64 to Image Decoder
Paste your Base64 string below to render and download the image.
What Is Base64 to Image Decoding?
A Base64 image string is a photo, icon, or graphic encoded as plain text — the format you'll find embedded directly in CSS (data:image/png;base64,...), JSON API responses, or emails, instead of linked as a separate file. This tool reverses that: paste the Base64 string and get the actual, viewable, downloadable image back.
Decoding happens entirely in your browser using the native atob() and Canvas APIs — the string never leaves your device.
Why Use This Base64 to Image Converter
🖼️ Instant Preview
See the decoded image the moment you paste a valid string — no separate "decode" step to remember.
⬇️ Direct Download
Save the decoded image straight to your device in its original format.
🔒 Nothing Uploaded
Decoding runs locally — useful when the image came from a private API response or internal tool.
How to Convert Base64 to an Image
- Paste the Base64 string into the textarea — with or without the leading
data:image/png;base64,prefix. - Click "Decode to Image" — a preview of the decoded image appears immediately below.
- Download it to save the image as a real file on your device.
When You'll Actually Need This
1. Debugging an API response
Many APIs return images as Base64 inside JSON — paste the string here to actually see what image the API sent back, without writing decode code yourself.
2. Extracting an image from CSS or HTML source
Inline data: URIs in a stylesheet or a saved HTML file can be pasted directly to recover the original graphic as a downloadable file.
3. Verifying an image before using it in code
Confirm a Base64 string is a valid, correctly-encoded image before committing it to a codebase or config file.
Frequently Asked Questions (FAQ)
Q: What image formats does this support?
A: Any format a browser can natively render from a data URI — PNG, JPEG, GIF, WebP, and SVG.
Q: My string won't decode — why?
A: The most common cause is a truncated or corrupted string (often from copy-paste), or missing padding characters (=) at the end of the Base64 data.
Q: Is the image sent to a server to decode it?
A: No — decoding uses your browser's built-in atob() function and Canvas API entirely client-side.