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Measuring performance

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Tommy Parnell
2019-11-30 18:39:37 -05:00
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@@ -77,3 +77,11 @@ A checklist to make sure you website will be fast!
- [ ] Use a service worker to prefetch pages users will most likely navigate to next
- [ ] Support offline, and spotty networks
## Measuring Performance
There's a few great tools.
- Google's [Lighthouse](https://developers.google.com/web/tools/lighthouse) is built into chrome, and will score your page's performance from 0-100
- You can use [source-map-explorer](https://www.npmjs.com/package/source-map-explorer) to visualize what is in your bundles. I often use this tool to find duplicate dependencies in a bundle.
- [Web page test](https://www.webpagetest.org/) is always good to see how your assets load in the browser.
- The [Chrome User Experience](https://developers.google.com/web/tools/chrome-user-experience-report) is a massive dataset extracted from chrome to show what real users see for performance. Your domain likely exists in this report today. You can [generate yourself a dashboard](https://g.co/chromeuxdash) based off the data.