Image to Base64 Converter

Convert your images to Base64 easily with this Image to Base64 Converter. Upload any common image format, including PNG, JPEG, SVG, or GIF, and the tool will instantly transform your image into Base64-encoded text.

For privacy and performance, no images are uploaded to our servers. All conversions are handled directly within your browser, making the process secure while also saving bandwidth.

Converting images to Base64 is often used to reduce the number of HTTP requests when loading a webpage. For example, loading five images and one CSS file normally requires six requests. If those images are embedded as Base64 within the CSS file, the browser only needs to make a single request, which can improve load performance in certain scenarios.

If you need to convert Base64 data back into an image, please use our Base64 to Image Converter.

Drag and drop an image here or browse your device, or paste from your clipboard PNG, JPG, GIF, WebP, SVG and more, up to 10 MB

File name
Type
Size change
Original size
Base64 size

Data URI

Complete string, ready to paste into a browser address bar or an src attribute.

Image tag

An HTML img element with the image embedded.

CSS background

A background-image declaration for your stylesheet.

Base64 only

Just the encoded data, without the data: prefix.

Your image stays in your browser. Nothing is uploaded.

How to use it

The image to base64 converter is an online tool to convert images to base64.

Add your imageClick the upload area, drop an image onto it, or paste one from your clipboard.
Check the detailsYou will see the file name, type, original size and Base64 size, so you know the cost of embedding it.
Pick a formatChoose between a Data URI, an HTML image tag, a CSS background or the raw Base64 text.
Copy itPress the Copy button beside the format you need and paste it into your code. Nothing is uploaded, so your image stays private.

When to use Base64 images

Fewer requests

Embedding small icons and logos in your CSS or HTML saves a separate request for each one.

Self-contained files

Handy for HTML emails, single-file pages and demos where you cannot rely on external image files.

Keep it small

Base64 is about a third larger than the original and cannot be cached on its own. It suits small images; use normal files for big photos.

Frequently asked questions

Is my image uploaded anywhere?

No. The conversion happens inside your browser, so your image never leaves your device and nothing is stored on our servers.

What is a Data URI?

A Data URI is a way of putting a file’s contents directly into a web address. It starts with the file type, such as data:image/png;base64,, followed by the Base64 text. Browsers can display it exactly like a normal image link.

Why is the Base64 version bigger?

Base64 represents every 3 bytes of data using 4 text characters, so the result is roughly 33% larger than the original file. That is why it is best for small images.

Which formats can I convert?

Any image your browser can read, including PNG, JPG, GIF, WebP and SVG. The Data URI keeps the original file type, and images up to 10 MB are supported.

What is the difference between the four outputs?

The Data URI is the full string. The image tag wraps it in HTML, the CSS background wraps it in a background-image rule, and Base64 only is the encoded text without the data: prefix, which some APIs and databases expect.

How do I turn Base64 back into an image?

Use our Base64 to Image Converter. Paste the Data URI or Base64 text and it will rebuild the picture so you can download it.

Related tools

Base64 to Image Converter

Turn Base64 text or a Data URI back into an image you can download.