Zoompf's Web Performance Blog

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

A New Way to Justify Your Ongoing Performance Improvement Efforts

 Mark Isham on September 11, 2014. Category: Zoompf Alerts

There are many great tools out there to measure your current website performance, among them WebPageTest, Google Pagespeed, and of course the Zoompf Free Report. These are fantastic tools for capturing the current state of your website, but all lack one common shortcoming: they provide no historical context of how much better (or worse) your site performance has changed over time.

In my earlier post about Passing around the DeveOps Hat, I mentioned how it’s unfortunately rare to find engineers who have 100% of their time to focus on managing website performance. Often its a shared responsibility across the group.

For the performance minded engineer, this can be frustrating and even embarrassing. You know you can speed things up, but you have trouble justifying time spent to the “higher ups”. If the site is not flagrantly bad, there are always other priorities to be managed.

At Zoompf, we have just released a new free tool to help you provide this justification: Performance Defect History.


The Performance Defect History is a new dashboard on the Zoompf Alerts Beta that tracks your performance defect counts over time. Specifically, you can view the number of open, new, and fixed defects that occur on your site throughout time, drilling down to show the metrics you need at the appropriate level of interest: monthly, weekly, daily, and even snapshots within the day.

This is a great way for your management team to visualize the progress of your efforts over time, and you can easily share these reports simply by copy/pasting the URL from your performance dashboard. No logins or configuration are required, it just works. For example, here’s the link to the above graph. As you change filters and drill down, the URL will always update with a new, shareable link. Try playing around with this live demo.

You’ll notice also there’s a tab called Defect Changes. This view showcases the volatility of your site over time. If you started and ended the month with only 3 open performance defects, you could easily miss the fact that 28 new defects were created and then summarily fixed. This view helps track that volatility:


And here’s the link to that graph.

All graphs support full drilldowns from the highest level. Just click a point of interest, and keep zooming in. Once you reach a specific performance snapshot, you can then click in to see the actual defects that were logged at that specific point in time. For example:


And again here’s the share link.

The Performance History tool is a free feature of the Zoompf Alerts beta. If you’re not already on our free beta, sign up now and tell us how we can improve these charts to help you get the recognition you deserve!


Have some thoughts, a comment, or some feedback? Talk to us on Twitter @zoompf or use our contact us form.