The API Gave You a Wall of Base64 and You Need to See the Image

Need to Preview or Download an Image from a Base64 String?

You have a Base64 Data URL from an API response, an email attachment, or a config file. You want to see what the image looks like and save it as a file. You could write a script to decode it, or you could use a browser-based tool that does it in one paste.

OnliTools Base64 to Image Converter

OnliTools Base64 to Image Converter previews and downloads an image from a Base64 string or Data URL without uploading it. Paste the string, see the preview, and download the image. Everything stays in your browser.

How to Use It

1. Go to onlitools.com/base64-to-image.
2. Paste your Base64 string or Data URL.
3. Preview the decoded image.
4. Download it as a PNG or JPG.

Great For

• Developers — quickly inspect Base64 images from API responses
• Email handling — extract inline images from Base64-encoded sources
• Debugging — verify that a Base64 string actually contains valid image data

Wrap Up

No script, no install, no upload to a server. OnliTools Base64 to Image Converter turns Base64 strings into viewable images in seconds.