LoadNinja makes it build and run load tests using real browsers. These load tests can also target key user workflows to ensure maximum performance. ![]() While PageSpeed Insights is helpful for an initial audit, load testing solutions are the best way to keep performance top-of-mind over time. After inputting your URL, you can see key performance metrics and receive specific advice to make big improvements. Google PageSpeed Insights is a good first step in identifying problems with a website or application. Most businesses appreciate the importance of performance when it comes to ensuring an ideal user experience and the highest rankings on search engines. For example, someone in Europe could download images from a server in Europe. In addition to browser caching, content delivery networks, or CDNs, distribute images to special caching servers that are strategically positioned near each user. Images are ideal for caching because they tend to be large and don't frequently change. That's a problem for slow connections or mobile devices!Ĭaching strategies involve storing assets on a user's browser after the first load, which eliminates the need for any future downloading efforts. Many web applications involve lots of roundtrips between the browser and server – and the page doesn't load until critical resources have been completely downloaded. If that's not possible, you can also remove the data in Photoshop by using the "Save for Web" option and selecting "None" next to "Metadata". The best way to avoid metadata in your own images is by disabling the option on your camera. For example, many cameras add GPS data, camera details, color profiles, descriptions, and other data to images that all take up space. You can further optimize images by eliminating any unnecessary metadata in the image. If you're a developer, you can also use programmatic tools like imagemin that work with build tools like Gulp as part of an automated workflow. The best way to compress individual images is using tools like Kraken and Optimizilla. ![]() Lossy compression finds and reduces redundant pixels within an image, while lossless compression reorganizes data within an image without affecting pixels. You can use lossy and lossless compression algorithms to further reduce file size. Most image editors, such as Photoshop or GIMP, make it easy to resize or crop images to fit twice the maximum display size on a website. If your maximum display size is 500x250, you may want to resize the image to 1000x500, which is much smaller than the original size (but large enough for Retina displays). You can dramatically reduce the file size by resizing the image. That's about four times the size of the average website! If you take a photo on a 24-megapixel camera, the image will be 6000x4000 pixels and might be 16 megabytes in size. The most common way to optimize images is to resize them. Unlike JPEG, PNG, and GIF images, SVGs are text-based XML files that describe an image, which means they have a significantly smaller footprint. You may also want to use SVGs to display abstract illustrations, such as background shapes, rather than using images.
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