Welcome to Our Image Optimization Test!

At Joe Web site design, we're all about helping small businesses create websites that are fast, user-friendly, and, most of all, effective. A key component to improving website speed is optimizing your images. But with so many methods available, how do you know which one works best?

To help answer that question, we've put together a simple, side-by-side comparison of four popular image optimization techniques. Whether you're just starting out or looking for advanced techniques to speed up your website, this test gives you a real-world look at the impact each method can have.

What You'll Find on This Testing Mini-Site

You'll explore four different approaches to image optimization, each on its own page:

1. No Optimization – The starting point. We use unoptimized images to show the baseline load time and file size.
2. Image Optimization with Media Queries – A simple method that serves different images based on screen size.
3. Image Optimization with Srcset – A faster loading, more refined approach using the srcset attribute to serve images of varying sizes based on device.
4. Advanced Optimization with Picture and Srcset – Combines multiple image formats (JPG, WebP, and AVIF) with the picture tag to deliver the best possible performance for each browser and device.
5. Combining Picture and Srcset with SSL, CDN, Compression, and Caching – The top-tier solution combining optimal image optimization with blazing fast file delivery.

How the Test Works

On each page, we've placed a large hero image and a gallery of three smaller images—exactly the same in visual quality but delivered using different optimization methods. By comparing the pages, you'll see how image file sizes shrink and load times improve as you move through the techniques.

At the end, we provide detailed speed test results for each test page, generated using Chrome's Developer Tools. So you can see the direct impact of each optimization method.

Where to Start

Feel free to start with the No Optimization page to see how unoptimized images affect speed and performance. Then, work your way through the more advanced techniques to see how easy it can be to improve loading times. Finally, check out the Test Results and Summary page to see all the data in one place.

Let's get started!