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Performance Report for https://www.businessinsider.com/guides/tech
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 |
|---|---|---|---|
| 🔺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. |
0 | 1,617 elements | ["div.ins-drawer-button-area > button.drawer-dropdown-button > svg.svg-icon > title","section.container > section.row > section#l-content > div.verticals-subcategories"] |
| 🔺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. |
96 | 1.5 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. |
96 | 1.9 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. |
77 | 4.9 s | "[{\"url\": \"https:\/\/www.businessinsider.com\/guides\/tech\", \"responseTime\": 897.6899999999999}]" |
| 🔺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 |
65 | 3.5 s | "[]" |
| 🔺largest-contentful-paint-element This is the largest contentful element painted within the viewport. Learn more about the Largest Contentful Paint element |
0 | 3,460 ms | "[{\"type\": \"table\", \"items\": [{\"node\": {\"lhId\": \"page-0-IMG\", \"path\": \"1,HTML,1,BODY,4,SECTION,3,SECTION,0,SECTION,1,DIV,0,SECTION,0,DIV,1,A,0,DIV,0,IMG\", \"type\": \"node\", \"snippet\": \"<img src=\\\"https:\/\/i.insider.com\/66143d251caec1275a6de30b?width=1000&format=jpeg&auto\u2026\\\" srcset=\\\"https:\/\/i.insider.com\/66143d251caec1275a6de30b?width=400&format=jpeg&auto=\u2026\\\" sizes=\\\"(min-width: 1280px) 900px\\\" alt=\\\"A Samsung S95D on a TV stand in a living room.\\\" decoding=\\\"async\\\">\", \"selector\": \"div.top-vertical-trio-item > a.three-column-tout-image > div.aspect-ratio > img\", \"nodeLabel\": \"A Samsung S95D on a TV stand in a living room.\", \"boundingRect\": {\"top\": 261, \"left\": 15, \"right\": 770, \"width\": 755, \"bottom\": 638, \"height\": 378}}}], \"headings\": [{\"key\": \"node\", \"label\": \"Element\", \"valueType\": \"node\"}]}, {\"type\": \"table\", \"items\": [{\"phase\": \"TTFB\", \"timing\": 969.791, \"percent\": \"28%\"}, {\"phase\": \"Load Delay\", \"timing\": 375.0243597919397, \"percent\": \"11%\"}, {\"phase\": \"Load Time\", \"timing\": 966.6729988651916, \"percent\": \"28%\"}, {\"phase\": \"Render Delay\", \"timing\": 1152.176141342869, \"percent\": \"33%\"}], \"headings\": [{\"key\": \"phase\", \"label\": \"Phase\", \"valueType\": \"text\"}, {\"key\": \"percent\", \"label\": \"% of LCP\", \"valueType\": \"text\"}, {\"key\": \"timing\", \"label\": \"Timing\", \"valueType\": \"ms\"}]}]" |
| 🔺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. |
94 | 110 ms | [] |
| 🔺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 900 ms | "[{\"url\": \"https:\/\/www.businessinsider.com\/guides\/tech\", \"responseTime\": 897.6899999999999}]" |
| 🔺speed-index Speed Index shows how quickly the contents of a page are visibly populated. Learn more about the Speed Index metric. |
16 | 8.7 s | "[]" |
| 🔺total-blocking-time Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds. Learn more about the Total Blocking Time metric. |
98 | 100 ms | [] |
| 🔺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 21 KiB | "[{\"url\": \"https:\/\/www.businessinsider.com\/styles\/landing-page-mobile.06389f0ae3c965a36731.css\", \"totalBytes\": 24570, \"wastedBytes\": 21871, \"wastedPercent\": 89.01575552752458}]" |
| 🔺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. |
50 | Potential savings of 51 KiB | "[{\"url\": \"https:\/\/www.businessinsider.com\/scripts\/main.d52fe1b8b37265ef594c.js\", \"totalBytes\": 62060, \"wastedBytes\": 27643, \"wastedPercent\": 44.54298199789381}, {\"url\": \"https:\/\/www.businessinsider.com\/scripts\/vendors.16fae5cd0c86d0ea6180.js\", \"totalBytes\": 41989, \"wastedBytes\": 24494, \"wastedPercent\": 58.334262400390735}]" |
| 🔺uses-long-cache-ttl A long cache lifetime can speed up repeat visits to your page. Learn more about efficient cache policies. |
50 | 4 resources found | "[{\"url\": \"https:\/\/cmp.osano.com\/169pxRTHL4HFV2CIm\/b13f17b2-f1b9-41b1-a08d-3579e74456d3\/osano-ui.js\", \"debugData\": {\"type\": \"debugdata\", \"public\": true, \"max-age\": 86400, \"no-transform\": true}, \"totalBytes\": 26374, \"wastedBytes\": 10549.6, \"cacheLifetimeMs\": 86400000, \"cacheHitProbability\": 0.6}, {\"url\": \"https:\/\/cdn.speedcurve.com\/js\/lux.js?id=38383524\", \"debugData\": {\"type\": \"debugdata\", \"max-age\": 604800}, \"totalBytes\": 8740, \"wastedBytes\": 873.9999999999998, \"cacheLifetimeMs\": 604800000, \"cacheHitProbability\": 0.9}, {\"url\": \"https:\/\/i.insider.com\/660c2a9b3f923f7dab03a1c1?width=1000&format=jpeg&auto=webp\", \"debugData\": {\"type\": \"debugdata\", \"public\": true, \"max-age\": 2592000}, \"totalBytes\": 67105, \"wastedBytes\": 6279.3784916201075, \"cacheLifetimeMs\": 2592000000, \"cacheHitProbability\": 0.9064245810055866}, {\"url\": \"https:\/\/i.insider.com\/66143d251caec1275a6de30b?width=1000&format=jpeg&auto=webp\", \"debugData\": {\"type\": \"debugdata\", \"public\": true, \"max-age\": 2592000}, \"totalBytes\": 47297, \"wastedBytes\": 4425.836592178768, \"cacheLifetimeMs\": 2592000000, \"cacheHitProbability\": 0.9064245810055866}]" |
| 🔺uses-responsive-images Serve images that are appropriately-sized to save cellular data and improve load time. Learn how to size images. |
0 | Potential savings of 20 KiB | ["div.top-vertical-trio-item > a.three-column-tout-image > div.aspect-ratio > img"] |