A data URL embeds file content directly in the URL string using Base64 encoding. It starts with data:image/png;base64, (or another MIME type) followed by the encoded bytes. Browsers render it as an image without fetching a separate file.

What if I paste a raw Base64 string without the data: prefix?

The tool automatically prepends data:image/png;base64, to the raw string so it can be rendered. If the image is actually a JPG or WebP, the preview may still work since browsers are lenient, but the download extension will be .png.

What formats are supported?

Any image format your browser can render: PNG, JPG, WebP, GIF, and SVG. The format is detected from the MIME type in the data URL.

Is my data sent to a server?

No. The decoding and rendering happen entirely in your browser. Your Base64 string is never transmitted.

Base64 to Image

Paste a Base64 string or data URL to instantly preview and download the decoded image.

How to use this tool

1Paste a full data URL (data:image/png;base64,...) or a raw Base64 string into the textarea.
2The image preview renders instantly below the input.
3If the input is invalid, an error message appears.
4Click 'Download Image' to save the decoded image to your device.

About Base64 to Image

API responses, CSS background properties, and HTML email templates sometimes contain images encoded as Base64 data URLs rather than file references. Decoding them manually to see what the image actually looks like is tedious. Paste either a full data URL (starting with data:image/...) or a raw Base64 string into the input, and the image is rendered as a live preview instantly. If you paste a raw Base64 string without the data: prefix, the tool automatically prepends data:image/png;base64, so it renders correctly. The detected image format (png, jpg, webp, gif, svg) is extracted from the data URL and used as the download file extension. An error message appears if the string is not valid Base64 or the browser can't decode the image format. Developers debugging REST API responses, inspecting email template source code, or verifying CSS background-image data URLs are the primary users.

Frequently asked questions

Related Tools

Image Resizer

Resize images to exact pixel dimensions in your browser — no upload, no server.

Image

Image to Base64

Convert any image file to a Base64 data URL for embedding in HTML, CSS, or JSON.

Image

Image Compressor

Compress JPG, PNG, and WebP images client-side using the Canvas API — no uploads, no server.

Image