Image ↔ Base64 Converter

Convert an image to a Base64 data URL, or restore an image from Base64.

Mode

Click to select an image, or drag and dropPNG, JPEG, WebP, etc. (up to 10MB)

Overview

Converts an image file into a Base64-encoded data URL, or restores an image from a Base64 string.
In "Image → Base64" mode, the uploaded image is output as a data URL string.
In "Base64 → Image" mode, an image is restored from a data URL or a raw Base64 string (without a prefix) and can be downloaded.

Select "Image → Base64" or "Base64 → Image" as the mode.
In "Image → Base64", selecting an image automatically generates its data URL. Use "Copy" to copy the result.
In "Base64 → Image", paste a Base64 string (or data URL) and click "Decode" to see a preview and download link.

Input

icon.png (Image → Base64 mode)

Output

data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAA...

Embedding a small icon image directly into a CSS background-image or an HTML img tag
Embedding an image where external file references aren't possible, such as in email bodies or JSON config files
Previewing and saving Base64 image data returned from an API response

Is the uploaded image or Base64 string sent to a server?

No. All processing happens entirely in your browser (client-side) and nothing is sent to an external server.

Can I decode a string that doesn't have the data URL prefix (data:image/png;base64,)?

Yes. Select the image type in "MIME type" and a raw Base64 string without a prefix can also be decoded.

Does Base64 encoding increase the image file size?

Yes. Base64 encoding increases the size by roughly 33% compared to the original binary data, so it isn't ideal for large images.

Uploaded images must be 10MB or smaller.
Base64 encoding increases file size by roughly 33%, so it isn't well suited to embedding large images.
Entering an invalid string in "Base64 → Image" mode shows an error message.

Encode and decode text to and from Base64.

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