β
Performance Report for https://dessy.com/bridesmaid-dresses/under-150-dollars/
Category Audit = performance
The performance audit in Lighthouse consists of several stages:
1. Data collection: Lighthouse launches the browser and loads the web page to collect data about its performance.
2. Metrics analysis: Lighthouse evaluates performance metrics such as page load time, content rendering speed, cache usage, and more. It also provides information on how each metric impacts the user experience.
3. Report: Lighthouse generates a report that contains the results of the performance audit. The report includes a list of recommendations for improving page performance and an assessment of each performance metric.
After conducting the performance audit in Lighthouse, you can use the data and recommendations to optimize your web page's performance and improve the user experience.
| auditthe name of the audit and its description, follow the link for more details | scorethe value of the audit score after the check | valuedetected cause values and check values | details for technician |
|---|---|---|---|
| 🔺cumulative-layout-shift Cumulative Layout Shift measures the movement of visible elements within the viewport. Learn more about the Cumulative Layout Shift metric. |
69 | 0.172 | "[{\"newEngineResult\": {\"cumulativeLayoutShift\": 0.1721978177742616, \"cumulativeLayoutShiftMainFrame\": 0.1721978177742616}, \"newEngineResultDiffered\": false, \"cumulativeLayoutShiftMainFrame\": 0.1721978177742616}]" |
| 🔺dom-size A large DOM will increase memory usage, cause longer style calculations, and produce costly layout reflows. Learn how to avoid an excessive DOM size. |
50 | 1,367 elements | ["ul.semantic-two-column > li > a > div.swatch-basics","div.q-layout > div > div.max-centered > div.row"] |
| 🔺first-contentful-paint First Contentful Paint marks the time at which the first text or image is painted. Learn more about the First Contentful Paint metric. |
52 | 2.9 s | "[]" |
| 🔺first-meaningful-paint First Meaningful Paint measures when the primary content of a page is visible. Learn more about the First Meaningful Paint metric. |
77 | 2.9 s | "[]" |
| 🔺interactive Time to Interactive is the amount of time it takes for the page to become fully interactive. Learn more about the Time to Interactive metric. |
34 | 8.9 s | "[{\"url\": \"https:\/\/dessy.com\/bridesmaid-dresses\/under-150-dollars\/\", \"responseTime\": 1022.891}]" |
| 🔺largest-contentful-paint Largest Contentful Paint marks the time at which the largest text or image is painted. Learn more about the Largest Contentful Paint metric |
46 | 4.1 s | "[]" |
| 🔺layout-shift-elements These DOM elements contribute most to the CLS of the page. Learn how to improve CLS |
0 | 2 elements found | ["body.desktop > div#q-app > div.high-contrast > div#focus-main","div > div > div#plp-header > img"] |
| 🔺layout-shifts | 0 | 6 layout shifts found | ["body.desktop > div#q-app > div.high-contrast > div#focus-main","body.desktop > div#q-app > div.high-contrast > div#focus-main","body.desktop > div#q-app > div.high-contrast > div#focus-main","body.desktop > div#q-app > div.high-contrast > div#focus-main","body.desktop > div#q-app > div.high-contrast > div#focus-main","div > div > div#plp-header > img"] |
| 🔺max-potential-fid The maximum potential First Input Delay that your users could experience is the duration of the longest task. Learn more about the Maximum Potential First Input Delay metric. |
98 | 80 ms | [] |
| 🔺modern-image-formats Image formats like WebP and AVIF often provide better compression than PNG or JPEG, which means faster downloads and less data consumption. Learn more about modern image formats. |
50 | Potential savings of 50 KiB | ["div.small-10 > div.small-12 > a.black > img","div.small-10 > div.small-12 > a.black > img"] |
| 🔺no-document-write For users on slow connections, external scripts dynamically injected via `document.write()` can delay page load by tens of seconds. Learn how to avoid document.write(). |
50 | "[{\"source\": {\"url\": \"https:\/\/sslwidget.criteo.com\/event?a=25647&v=5.23.0&otl=1&p0=e%3Dexd%26site_type%3Dm&p1=e%3Dvl%26tms%3DCriteo%2520GTM%2520Enhanced%2520(Retail)%2520(GA4)%2520-%2520v12%26p%3D%255BTH119%252CTH123%252CTH129FP%255D&p2=e%3Dvpg&p3=e%3Ddis&adce=1&bundle=HBXw2l95TFJKVGxra2hvMFZKJTJCczBSc3EwUUdNVGpQMkl6M0hZbmc4dU5INUZCWXlJN1hreHJHeFdlOGtkJTJGSXJmRDB6dDR0Y002cExUSGJGVFlPMk1ydVp1b3ZadUMxNzdSQ05SWW1PeHhpcyUyRjVUb1BCV25Oc3dTWDRodkhWdm9MdmNFMklmbDhzM2J1emFEMGVYYWc4MnBHV3clM0QlM0Q&tld=dessy.com&dy=1&fu=https%253A%252F%252Fdessy.com%252Fbridesmaid-dresses%252Funder-150-dollars%252F&ceid=af1450ba-fdc7-4bac-8be4-a2cac457ff21&dtycbr=77468\", \"line\": 0, \"type\": \"source-location\", \"column\": 902, \"urlProvider\": \"network\"}}]" |
|
| 🔺offscreen-images Consider lazy-loading offscreen and hidden images after all critical resources have finished loading to lower time to interactive. Learn how to defer offscreen images. |
50 | Potential savings of 90 KiB | ["div.small-10 > div.small-12 > a.black > img","div.small-10 > div.small-12 > a.black > img"] |
| 🔺server-response-time Keep the server response time for the main document short because all other requests depend on it. Learn more about the Time to First Byte metric. |
0 | Root document took 1,020 ms | "[{\"url\": \"https:\/\/dessy.com\/bridesmaid-dresses\/under-150-dollars\/\", \"responseTime\": 1022.891}]" |
| 🔺speed-index Speed Index shows how quickly the contents of a page are visibly populated. Learn more about the Speed Index metric. |
7 | 10.6 s | "[]" |
| 🔺unsized-images Set an explicit width and height on image elements to reduce layout shifts and improve CLS. Learn how to set image dimensions |
50 | ["div.small-10 > div.small-12 > a.black > img","div.small-10 > div.small-12 > a.black > img"] |
|
| 🔺unused-css-rules Reduce unused rules from stylesheets and defer CSS not used for above-the-fold content to decrease bytes consumed by network activity. Learn how to reduce unused CSS. |
0 | Potential savings of 53 KiB | "[{\"url\": \"https:\/\/prod.dessy.dev\/dessy-statics\/css\/app.b2a2a164.css\", \"totalBytes\": 57585, \"wastedBytes\": 54551, \"wastedPercent\": 94.73064317902498}]" |
| 🔺unused-javascript Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. Learn how to reduce unused JavaScript. |
0 | Potential savings of 101 KiB | "[{\"url\": \"https:\/\/prod.dessy.dev\/dessy-statics\/js\/app.f2201595.js\", \"totalBytes\": 123577, \"wastedBytes\": 59931, \"wastedPercent\": 48.49702664487209}, {\"url\": \"https:\/\/www.googletagmanager.com\/gtm.js?id=GTM-56K9QDDH\", \"totalBytes\": 88229, \"wastedBytes\": 43489, \"wastedPercent\": 49.29110141073761}]" |
| 🔺uses-long-cache-ttl A long cache lifetime can speed up repeat visits to your page. Learn more about efficient cache policies. |
50 | 8 resources found | "[{\"url\": \"https:\/\/id5-sync.com\/s\/966\/9.gif?puid=k-0ekq_uy9sG8Lih7b8i1wNG-Giwiexiv4XtMzOQ\", \"totalBytes\": 1029, \"wastedBytes\": 1029, \"cacheLifetimeMs\": 0, \"cacheHitProbability\": 0}, {\"url\": \"https:\/\/ad.360yield.com\/match?publisher_dsp_id=38&external_user_id=k-s1OXbey9sG8Lih7b8i1wNG-GiwjHFZgWun0mTQ\", \"totalBytes\": 199, \"wastedBytes\": 199, \"cacheLifetimeMs\": 0, \"cacheHitProbability\": 0}, {\"url\": \"https:\/\/cm.adform.net\/pixel?adform_pid=15&adform_pc=k-KbhYRey9sG8Lih7b8i1wNG-Giwifrq-nGq2FhQ\", \"totalBytes\": 163, \"wastedBytes\": 163, \"cacheLifetimeMs\": 0, \"cacheHitProbability\": 0}, {\"url\": \"https:\/\/rtb-csync.smartadserver.com\/redir\/?partnerid=79&partneruserid=k-q-3pcOy9sG8Lih7b8i1wNG-GiwiljhiZlRVmJg\", \"totalBytes\": 163, \"wastedBytes\": 163, \"cacheLifetimeMs\": 0, \"cacheHitProbability\": 0}, {\"url\": \"https:\/\/sync-t1.taboola.com\/sg\/criteortb-network\/1\/rtb-h\/?taboola_hm=k-nO301ey9sG8Lih7b8i1wNG-Giwh8jFJtXbrTbA\", \"totalBytes\": 99, \"wastedBytes\": 99, \"cacheLifetimeMs\": 0, \"cacheHitProbability\": 0}, {\"url\": \"https:\/\/dynamic.criteo.com\/js\/ld\/ld.js?a=25647\", \"debugData\": {\"type\": \"debugdata\", \"public\": true, \"max-age\": 10800}, \"totalBytes\": 20912, \"wastedBytes\": 14638.4, \"cacheLifetimeMs\": 10800000, \"cacheHitProbability\": 0.3}, {\"url\": \"https:\/\/matching.ivitrack.com\/sync?realm=criteo&uid=k-uNqxm-y9sG8Lih7b8i1wNG-GiwiuSk9FOPrKUw\", \"debugData\": {\"type\": \"debugdata\", \"public\": true, \"max-age\": 86400}, \"totalBytes\": 265, \"wastedBytes\": 106, \"cacheLifetimeMs\": 86400000, \"cacheHitProbability\": 0.6}, {\"url\": \"https:\/\/res.cloudinary.com\/dessy\/image\/upload\/c_scale,w_800,e_sharpen:100\/v1642020023\/s\/i\/headers\/2022-Bridesmaid-Dresses-Under-150_zrx23r.webp\", \"debugData\": {\"type\": \"debugdata\", \"public\": true, \"max-age\": 2592000, \"immutable\": true, \"no-transform\": true}, \"totalBytes\": 48413, \"wastedBytes\": 4530.266759776534, \"cacheLifetimeMs\": 2592000000, \"cacheHitProbability\": 0.9064245810055866}]" |
| 🔺uses-optimized-images Optimized images load faster and consume less cellular data. Learn how to efficiently encode images. |
50 | Potential savings of 9 KiB | ["div.small-10 > div.small-12 > a.black > img"] |
| 🔺uses-rel-preconnect Consider adding `preconnect` or `dns-prefetch` resource hints to establish early connections to important third-party origins. Learn how to preconnect to required origins. |
0 | Potential savings of 320 ms | "[{\"url\": \"https:\/\/www.googletagmanager.com\", \"wastedMs\": 315.48199999999997}]" |
| 🔺uses-responsive-images Serve images that are appropriately-sized to save cellular data and improve load time. Learn how to size images. |
50 | Potential savings of 27 KiB | ["a.pl-moose-link > div.pl-moose-image-crop-sidebyside > div > img.full-width","a.pl-moose-link > div.pl-moose-image-crop-sidebyside > div > img.full-width","a.pl-moose-link > div.pl-moose-image-crop-sidebyside > div > img.full-width"] |