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Filtered By Tag: tools

Note: Archived Content

This is the archived version of the Zoompf blog. Since our acquisition by Rigor, all our new research and posts on web performance are being published on The Rigor Blog

Detected and Optimizing Mismatched Image Formats

Serving the wrong image type can really hurt web performance. An improperly saved image can waste bandwidth and delay the page load time. In this blog post, I’ll show how you can use the file and grep commands to quickly, easily, and automatically find mismatched images that look like one image type but are actually […]

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Visualizing image optimizations with hex editors and strings

I’m a big fan of image optimizations, and have written several posts about it. Images dominate the web in terms of both byte size and request count. Luckily, they are super easy to optimize with free and/or open source tools. For lossless image optimization, you can expect to consistently reduce the size of your image […]

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REDbot: Awesome HTTP Testing

I am always on the lookout for new and cool web performance and quality tools. One of my favorite tools is REDbot. Every web performance advocate should be using REDbot regularly. Want to know why? To start, REDbot was created by the awesome Australian Mark Nottingham. Mark writes some excellent technical-yet-easy-to-understand essays on the inner […]

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