Page Speed is an open-source Firefox/Firebug Add-on. Webmasters and web developers can use Page Speed to evaluate the performance of their web pages and to get suggestions on how to improve them.
By using Page Speed, you can:
- Make your site faster.
- Keep Internet users engaged with your site.
- Reduce your bandwidth and hosting costs.
- Improve the web!
YSlow analyzes web pages and tells you why they’re slow based on the best practices for high performance web sites. YSlow is a Firefox add-on integrated with the popular Firebug web development tool. This tool has helped improve the performance on over 50 Yahoo! properties by 25-50%. We’re pleased to be able to share this with the development community so that others can join us in accelerating the user experience on the web!