A data URI is a string that embeds a file inline instead of linking to it, in the form data:[mime-type];base64,[data]. For a PNG it looks like data:image/png;base64,iVBORw0KGgo... Browsers render it as an image wherever a URL is expected, so no separate request is needed.

Can I use it as a Base64 to image converter?

Yes. Switch to the Base64 to Image direction, paste either a raw Base64 string or a complete data URI, and press Decode to image. The tool shows a preview, and Download image saves the reconstructed file as decoded.png, decoded.jpg or another extension that matches the MIME type.

Which image formats are supported?

PNG, JPG/JPEG, GIF, WebP, SVG, BMP, ICO, and AVIF are all supported. The correct MIME type is detected from the file so the resulting data URI renders correctly.

Why does my decoded JPEG download as decoded.png?

A raw Base64 string carries no MIME type, so the converter assumes PNG. Most browsers still show the preview, but the download is labelled image/png. Paste the full data URI instead, such as data:image/jpeg;base64,/9j/..., and the file saves as decoded.jpg. A MIME type the tool does not map, such as image/heic, saves as decoded.bin.

Why does it say That does not look like valid Base64?

The string contains characters standard Base64 does not use. The most common cause is URL-safe Base64, which swaps + and / for - and _. Replace - with + and _ with /, then decode again. A data URI that is not Base64 at all, such as an SVG written as data:image/svg+xml,<svg..., fails the same check.

Why is the Base64 string larger than my image?

Base64 represents three bytes of binary data with four text characters, so encoded output is about 33 percent larger than the source. That overhead is why Base64 suits small icons and logos more than large photographs.

Is it safe to convert images here?

Yes. Every image is read and encoded entirely in your browser using the File API. The image, the Base64 string and the output snippets are never uploaded to a server, so private images stay on your device. The only thing sent is a usage record that counts toward the daily limit and says whether you encoded or decoded, with no file name or image data.

Should I inline images as Base64 in production?

Inlining works well for small, frequently used assets such as icons because it removes an HTTP request and avoids a flash of missing image. For large images it is usually better to keep separate files so the browser can cache them independently.

Does the converter work offline and on mobile?

Yes. Because all processing is client-side, it works after the page has loaded even without a connection, and the interface is responsive across modern desktop and mobile browsers.

Do I need an account?

No account, no email, no trial. The image to base64 converter runs entirely in the tab, which is also why there is no usage cap to buy your way past: nothing is being metered on our side.

Image to Base64 Converter

Q: How do I convert an image to Base64?

Choose the Image to Base64 direction, then upload or drop your image. The tool reads the file locally, encodes it, and returns the raw Base64 plus a ready-to-use data URI, an img tag, and a CSS snippet you can copy.

Q: Why is the Base64 string larger than my image?

Base64 represents three bytes of binary data with four text characters, so encoded output is about 33 percent larger than the source. That overhead is why Base64 suits small icons and logos more than large photographs.

Q: Is it safe to convert images here?

Yes. Every image is read and encoded entirely in your browser using the File API. The image, the Base64 string and the output snippets are never uploaded to a server, so private images stay on your device. The only thing sent is a usage record that counts toward the daily limit and says whether you encoded or decoded, with no file name or image data.

Q: Should I inline images as Base64 in production?

Inlining works well for small, frequently used assets such as icons because it removes an HTTP request and avoids a flash of missing image. For large images it is usually better to keep separate files so the browser can cache them independently.

Q: Does the converter work offline and on mobile?

Yes. Because all processing is client-side, it works after the page has loaded even without a connection, and the interface is responsive across modern desktop and mobile browsers.

Convert images to Base64 data URIs and decode Base64 back to images.

Drop an image anywhere on this page

or paste ⌘VPNG, JPG, WebP, GIF, SVG or any image

What is an Image to Base64 Converter?

An image to Base64 converter turns the binary contents of an image file into a Base64 text string, usually wrapped in a data URI such as data:image/png;base64,iVBORw0KG... Base64 is an encoding that represents any binary data using 64 printable ASCII characters, so the resulting string can live directly inside HTML, CSS, JSON, or SVG without needing a separate file request. This converter also runs in reverse: paste a Base64 string or a full data URI and it rebuilds the original image for preview and download.

Developers embed images as Base64 to cut down on HTTP requests, to inline small icons and logos so they appear the instant a page paints, and to ship self-contained files where an image and its markup travel together. A data URI carries its own MIME type, which is why a browser can render data:image/png;base64,... as a picture the moment it parses the attribute. The trade-off is size: Base64 inflates data by roughly one third, so it suits small assets far better than large photos.

This tool does all of its work in your browser. The image is read and encoded locally with the browser File API, and the image itself is never uploaded to a server, which keeps private artwork and screenshots on your own machine. Alongside the raw Base64 you get a ready-to-paste data URI, an HTML img tag, and a CSS background-image declaration, plus the decoded byte size so you can judge whether inlining is worth it before you commit.

The Base64 to image converter direction is easy to check with a known string. Paste the 96-character PNG string that starts iVBORw0KGgo (a single 1×1 pixel) into Base64 to Image and press Decode to image. You get a preview and a Download image button that saves decoded.png, a 70 byte file. Run that file back through Image to Base64 and the preview line reads image/png · 70 B decoded · 96 Base64 chars. To convert Base64 to image files in other formats, paste the full data URI so the right type is kept.

One practical caution: a data URI is roughly a third larger than the file it encodes and cannot be cached separately by the browser, so inlining anything beyond a small icon usually costs more than the request it saves.

How to use the Image to Base64 Converter?

Choose a direction
Pick Image to Base64 to encode a file, or Base64 to Image to rebuild a picture from a string.
Add your input
Upload or drop an image to encode, or paste a Base64 string or full data URI to decode.
Review the output
See the preview, the encoded size, and the generated data URI, img tag, and CSS snippet.
Copy or download
Copy the format you need, or download the decoded image back to a file.

Key Features

Decodes Back to a File
Paste a data URI and get the image back, which is the faster half of the job when someone sends you an encoded blob
Encode and decode
Convert an image to a Base64 data URI, or paste Base64 back to preview and download the original image.
Ready-to-paste snippets
Get the raw Base64, a full data URI, an HTML img tag, and a CSS background-image rule in one place.
Wide format support
Works with PNG, JPG, GIF, WebP, SVG, BMP, ICO, and AVIF, with the correct MIME type detected automatically.

Frequently Asked Questions

Choose the Image to Base64 direction, then upload or drop your image. The tool reads the file locally, encodes it, and returns the raw Base64 plus a ready-to-use data URI, an img tag, and a CSS snippet you can copy.

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Learn more

Read the full Image to Base64 Converter guide

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Image to Base64 Converter

What is an Image to Base64 Converter?

How to use the Image to Base64 Converter?

Choose a direction

Add your input

Review the output

Copy or download

Key Features

Decodes Back to a File

Encode and decode

Ready-to-paste snippets

Wide format support