Visualize your site's front-end performance with this heat map bookmarklet

Want to quickly analyze your website's asset loading performance? Add PerfMap to Chrome's bookmarks bar, load up your site, and trigger the bookmarklet to see a heat map similar to the one below:


News Films

Our little film studio focuses on telling developer-centric stories that need to be seen.

GopherCon 2016 Conference Recap

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