Version: v0.5.1 - Beta.  We welcome contributors & feedback.  THanks!

Perf Score

Today, with broadband widely available, subsecond download times are eminently possible and should definitely be the goal.

— Jakob Nielsen


Perf Score gives you a detailed view into how fast your page loads.

It also provides a letter grade (A to F) indicating how fast it appears to your users.

To display your perf score at the bottom of every page, set showPerfScore: true in settings/app.jcon.

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How to Improve Performance 

We should forget about small efficiencies, say about 97% of the time: premature optimization is the root of all evil. Yet we should not pass up our opportunities in that critical 3%.

— Donald Knuth