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Read [Use Speedlify to Continuously Measure Site Performance](https://www.zachleat.com/web/speedlify/). Created by [@zachleat](https://www.zachleat.com/).\n\n* Requires Node 12+\n* Each file in `_data/sites/*.js` is a category and contains a list of sites for comparison.\n\n## Run locally\n\n_After cloning you’ll probably want to delete the initial `_data/sites/*.js` files and create your own file with a list of your own site URLs!_\n\n```\nnpm install\nnpm run test-pages\nnpm run start\n```\n\n## Related\n\n* [The Eleventy Leaderboards](https://www.zachleat.com/web/eleventy-leaderboard-speedlify/) are running on Speedlify\n* [speedlify.dev](https://www.speedlify.dev/) shows some sample categories\n* Use the [`\u003cspeedlify-score\u003e` component](https://github.com/zachleat/speedlify-score) to show your scores on your page. Read more at [I added Lighthouse Scores to my Site’s Footer and You Can Too](https://www.zachleat.com/web/lighthouse-in-footer/)\n* The [Eleventy Starter Projects list](https://www.11ty.dev/docs/starter/) shows Lighthouse scores from Speedlify. Read more at [The Lighthouse Scores Will Continue Until Morale Improves](https://www.zachleat.com/web/11ty-lighthouse/).\n\n## Deploy to Netlify\n\nCan run directly on Netlify (including your tests) and will save the results to a Netlify build cache (via Netlify Build Plugins, see `plugins/keep-data-cache/`).\n\n_After cloning you’ll probably want to delete the initial `_data/sites/*.js` files and create your own file with a list of your own site URLs!_\n\n\u003ca href=\"https://app.netlify.com/start/deploy?repository=https://github.com/zachleat/speedlify\"\u003e\u003cimg src=\"https://www.netlify.com/img/deploy/button.svg\" width=\"146\" height=\"32\"\u003e\u003c/a\u003e\n\nSpeedlify will also save your data to `/results.zip` so that you can download later. Though this has proved to be unnecessary so far, it does serve as a fallback backup mechanism in case the Netlify cache is lost. 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