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Show Slow is an open source tool that helps monitor various website performance metrics over time. It captures the results of YSlow, Page Speed, WebPageTest and dynaTrace AJAX rankings and graphs them, to help you understand how various changes to your site affect its performance.

DEMO

ShowSlow.com is a demonstration site that continuously measures the performance of a few reference web pages. It also allows for public metrics reporting.

Open Source project on Github

https://github.com/sergeychernyshev/showslow/

• Download packages
• Issue tracker
• Source code

ShowSlow Installation and configuration

• Installation and configuration instructions
• Advanced configuration options

Upgrading existing instance

• Upgrading existing instance

Automated testing

To have your ShowSlow instance collect data automatically for URLs entered by users, you need to configure your tools and use automation scripts to run them on periodically (using cron, for example).

To get a list of URLs in the instance call http://www.example.com/showslow/monitor.php page and to get a list of URLs that do not have any data collected yet (for more frequent monitoring), call http://www.example.com/showslow/monitor.php?new

Configuring Tools

• Configuring YSlow
• Configuring Page Speed
• Configuring Page Speed Online API
• Configuring WebPageTest
• Configuring NetExport
• Configuring dynaTrace AJAX Edition

Community

You can ask questions and discuss ShowSlow in our group http://groups.google.com/group/showslow or just leave feedback at http://showslow.uservoice.com

Contributing

You can contribute by:

• installing Show Slow and sharing your experience or problems
• submitting bugs and feature requests
• adding features or fixing bugs and sending pull requests
• by writing a good article in your blog about your experience using Show Slow or some particular problem it helped you solve
• designers can contribute good design
• business people can contribute by asking their tech teams to use Show Slow

Editing these pages

If you see some error or typo on this site, just click edit at the top and fix it - it's a wiki

Same goes for documentation omissions or any other useful information about the project.

Development blog

You can track ShowSlow progress in the blog:

• ShowSlow blog (RSS)