Paste Base64 or a data URL to preview the image and download PNG, JPG, WebP, GIF, or SVG output. Decoding and type detection run on your device—invalid or non-image Base64 will not decode.

How to use this tool

1. Paste a Base64 string or full data URL into the input panel. 2. Review the decoded image preview. 3. Confirm the detected format (PNG, JPG, WebP, GIF, or SVG). 4. Download the image file if the preview looks correct. 5. Fix invalid Base64 or try a different encoding if decoding fails. Processing runs on your device; inputs are not uploaded to our server.

Worked example

Example: paste a small PNG data URL such as data:image/png;base64,... and download the decoded PNG—invalid or non-image Base64 will show an error instead of a preview.

How it works

Paste a Base64 string or data URL. The tool decodes it on your device, detects the image type from the bytes or data URL header, and shows a preview you can download. Nothing is uploaded to a server.

Limitations

Decodes Base64 strings and data URLs for supported image formats (PNG, JPG, WebP, GIF, SVG). Invalid or non-image Base64 will fail—it does not repair corrupted data.

Privacy and file handling

Your image stays on your device and is not uploaded.

FAQ

Frequently asked questions

Can I paste a data URL?

Yes. Paste either a raw Base64 string or a full data URL. The tool detects the image type from the header or file bytes.

Is decoding done on a server?

No. Decoding and preview stay on your device.

Is Base64 to Image Decoder free to use?

Yes. Utilnivo tools are free to use and do not require an account.

Page last reviewed: March 1, 2026

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