Is the image converter free to use?

Yes, all our image tools including the converter, resizer, and optimizer are completely free to use.

Are my images uploaded to a server?

No, we use a privacy-first approach. All image processing happens locally in your browser, so your files never leave your device.

What image formats are supported?

We support a wide range of formats including JPG, PNG, WEBP, SVG, and GIF for conversion and optimization.

How to Use Data URLs for CSS Backgrounds to Reduce HTTP Requests | Image Converter & Optimizer

What is a Data URL?

A Data URL is a URI scheme that allows you to include data in-line in web pages as if they were external resources. For images, it typically looks like this: data:image/png;base64,iVBORw0KGgo...

Implementing in CSS

Instead of writing background-image: url('icon.png');, you can write background-image: url('data:image/png;base64,...');. This is incredibly useful for small UI elements.

The Performance Benefit

In the days of HTTP/1.1, browsers limited the number of simultaneous connections to a domain. Every tiny icon required a separate request, causing a bottleneck. While HTTP/2 has largely solved this, reducing requests still speeds up the critical rendering path.

Workflow Automation

Manually converting images to Data URLs and writing the CSS is tedious. Our Developer Tools feature an "Image to CSS Background" generator that takes your image and instantly outputs the exact CSS code you need to copy and paste into your stylesheet.