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Lighthouse Desktop

· 0 checks — Desktop Lighthouse audit -- Performance, Accessibility, Best Practices, and SEO category breakdown.
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Detailed Report

Audit breakdown by category with detailed findings.

40

Performance

Insights

Remove large, duplicate JavaScript modules from bundles to reduce unnecessary bytes consumed by network activity.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Polyfills and transforms enable older browsers to use new JavaScript features. However, many aren't necessary for modern browsers. Consider modifying your JavaScript build process to not transpile Baseline features, unless you know you must support older browsers. Learn why most sites can deploy ES6+ code without transpiling

Why this matters

Performance issues directly impact user engagement and conversion rates.

3rd party code can significantly impact load performance. Reduce and defer loading of 3rd party code to prioritize your page's content.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Layout shifts occur when elements move absent any user interaction. Investigate the causes of layout shifts, such as elements being added, removed, or their fonts changing as the page loads.

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:node label:Element subItemsHeading:map[key:extra] valueType:node] map[granularity:0.001 key:score label:Layout shift score subItemsHeading:map[key:cause valueType:text] valueType:numeric]]
items: [map[node:map[type:text value:Total] score:0.411012] map[node:map[boundingRect:map[bottom:725 height:577 left:0 right:1335 top:148 width:1335] lhId:page-4-DIV nodeLabel:SIGN UP AND START HAVING FUN! Birthday Month January February March April May J… path:3,HTML,2,BODY,6,DIV,0,DIV,1,SECTION,0,DIV,1,DIV,0,DIV selector:section#RollerContainer > div#InnerRollerContainer > div.lower-logo-container > div#signup-container snippet:<div id="signup-container"> type:node] score:0.393432] map[node:map[boundingRect:map[bottom:1127 height:187 left:0 right:1335 top:940 width:1335] lhId:page-3-FOOTER nodeLabel:About Us Jobs Blog Parents Buy Gift Cards Help Terms Accessibility Privacy Your… path:3,HTML,2,BODY,7,DIV,1,FOOTER selector:body#rbx-body > div.dark-theme > footer#footer-container snippet:<footer class="container-footer" id="footer-container" data-is-giftcards-footer-enabled="True"> type:node] score:0.01758 subItems:map[items:[map[cause:Unsized image element]] type:subitems]]]

Consider setting font-display to swap or optional to ensure text is consistently visible. swap can be further optimized to mitigate layout shifts with font metric overrides.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Reducing the download time of images can improve the perceived load time of the page and LCP. Learn more about optimizing image size

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLResource SizeEst Savings
Log In SIGN UP AND START HAVING FUN! Birthday Month January February March Apri… body#rbx-body > div#react-landing-container > div#landing-page-container dark-theme > section#RollerContainer
images.rbxcdn.com/a19e4c27a0694a1d0fd5ceb17c978a7a-marketing_bg_05222025.jpg371.0 KiB33.5 KiB
Roblox on Galaxy Store ul.justify-center > li > a > img.height-1200
/a47d34e15ee107ca785d669df617c993-galaxy-badge-en_us-D53P...12.6 KiB11.7 KiB
Roblox on Amazon Store ul.justify-center > li > a > img.height-1200
/484d5f5fbd1e763ce57ae6ad39d88a6a-amazon-badge-en_us-TGDZ...7.8 KiB7.1 KiB

Optimize LCP by making the LCP image discoverable from the HTML immediately, and avoiding lazy-loading

Why this matters

Performance issues directly impact user engagement and conversion rates.

lhId: page-0-SECTION
nodeLabel: Log In SIGN UP AND START HAVING FUN! Birthday Month January February March Apri…
path: 3,HTML,2,BODY,6,DIV,0,DIV,1,SECTION
selector: body#rbx-body > div#react-landing-container > div#landing-page-container dark-theme > section#RollerContainer
snippet: <section class="row full-height-section rollercoaster-background fixed-background marketin…" id="RollerContainer">

Avoid chaining critical requests by reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load.

Why this matters

Performance issues directly impact user engagement and conversion rates.

description: [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints help the browser establish a connection earlier in the page load, saving time when the first request for that origin is made. The following are the origins that the page preconnected to.
title: Preconnected origins
value: no origins were preconnected
description: Add [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints to your most important origins, but try to use no more than 4.
title: Preconnect candidates

Requests are blocking the page's initial render, which may delay LCP. Deferring or inlining can move these network requests out of the critical path.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLTransfer SizeDuration
/63b59480fef503ff6648900d1051bae7531757a38ce24f77587552fc...405.3 KiB322 ms
/b27075e463237535a1fea6937020064e1b530fa477e02c255420ccea...198.1 KiB184 ms
/c035e21695db8d5ed0e8e0374f200db819c267ecebcc72afc36d3f2a...187.2 KiB184 ms
/9ae06f5f71e872379b9a7d47e1e9359594e1090515848ae2539157e8...216.1 KiB184 ms
/22d5ad7788622164771c3a767cdb21d73ca0b9cbfd24dd9b918fd3d7...60.1 KiB
/c27f57f4a397dabc2fe3b74fec93c2401913bdf49373f9339c00b6f1...77.6 KiB
/932cd731257164fc9eba426e6b3c5c8d08469faafc68ceb51f979f33...81.1 KiB92 ms
/19115da6a0c7bcb1a68ed7dc19dbafd6a2735a3ffd9486fe57dfc686...4.1 KiB
/fa4d513122f7928bf59ee5e22e99672e8730617927173538265cdcba...38.8 KiB
/922915020f866a8a89750cf812186ac08d56f7dfb11c67077046f98b...42.7 KiB
/40b0702cc10768dc66bca19c3669f23c17174215f5ac5f4f78d9eab4...49.1 KiB
/6d1937b2170c00984f8af866543570de8c217c36809830572e00d9e1...50.9 KiB92 ms
/81cd89f4dfeb52a295ef0882d3f29195c1df16b56a802f40688c1055...102.4 KiB92 ms
/3f8e434434483277444be52271f30d7e3d83ce0e00218e309bb202c7...8.0 KiB
/d7bfb029d7b5e90a80fe103668882778c48b26b1c4e3384c3fee6e4f...36.7 KiB
/c52d5e9748da5d99576013a33fb222b778dd3b8e4b2450beb3a09467...57.2 KiB
js.rbxcdn.com/7c94cf4ec48ea562d3194e01c3c4a629.js48.2 KiB
/e43939d84afb174603bd07f8225fab86f8effc3c2cec52531e82714b...49.7 KiB
/64daef195122aa9c881d456010e7b98d698b1c6b1aaba58c81abc27d...1.1 KiB
/18a39f1adad50fcd69442f5ddd58c68c80ee0ff59fadc808ffda3195...3.4 KiB
/84591cce51b4be3807c489abb82ecfb3b8974854dede1f2178679caa...32.4 KiB
/bf43b6cd794436d2a9a3097158aed4039d88a42b9b3881fce073da4f...1.8 KiB
/5d2b10e51dd6cc2329604087e74e8eeb57c37024d75e0be8c47eca40...1.3 KiB
/d28246bf145b9c4870c3b22617d0933261cff49e075859e7c703a8b3...3.1 KiB
/e778966a23e02f475d8725623a8dc21579b54a939c52738ec1b6565d...2.6 KiB
/f4d43b88aff79f294dbab0f728a61543c09bbebee1544248706d331f...1.4 KiB
/bd18305af9e4ce41099df37e554eeb1bf2cc139ffba636e356666ccd...21.4 KiB
js.rbxcdn.com/4bae454bf5dab3028073fea1e91b6f19.js30.3 KiB
/5c8a2ba3737908f693394045e81ebd71c77cde6f87550ea51f7833e8...68.4 KiB138 ms
/7186c09cc12cb47a4b6c2ee1fc627e4980305f0fb38e08f59151a1d0...140.9 KiB138 ms
js.rbxcdn.com/3756ad214dde52cb58a1300177547475.js89.3 KiB92 ms
js.rbxcdn.com/a3fe79f1bfdd96b7f0ad20eab2de7a05.js43.1 KiB92 ms
/5b2f2f6442447efaf65971ce280a154b5c278d234751fac0d4a3ae65...120.4 KiB92 ms
/758cbadc7893425f24985e142c6269c05a6bac374561454fd3b7386d...32.2 KiB
/0f91ae7a3efbb94ac1888931d53d6309fc65812b5a64b240c4861d9a...25.1 KiB
/54c13aaea011e94d285d4171277dbaa0a2ec1bf763b408d71f2adc7f...1.7 KiB
/f85ce090699c1c3962762b8a2f8b252f0f2a7d0424c146f41d6c5abb...25.3 KiB92 ms
/95f8bb82135ec3f4173f3194002ad0d239b3384622912fa4a7e93e50...16.1 KiB
/4d38c14ce04d534f61648fb0ba288d5fcddb9da5fd321deb173d4cf6...2.7 KiB
/e542289cda7ff67e2751c56aaaf91f44685b0b5f0345514c7fd4d35c...4.6 KiB
/118998e29ce4dfc712b4033370590464a3c9610c1b49367b24226274...59.5 KiB92 ms
/d2103009f17303199e698315acec635d3ebd96fb6072fa9804cd14c6...4.0 KiB
/0f75a173261ace474005809f5a4f985eb1f6974dd0a74683bb734a4f...2.6 KiB
/b4ea2dc46ab85fe82ee6a30c746e55e8287ebce02f2a6186a80aceda...11.1 KiB
/bbeb020bc9e9a383ce34c550733e07f784ca8e09e64a6b32ca309d19...6.3 KiB
/b9796ea7983f6d73db40cdbbb06c1b6e2011c9958e67ecd9e4e02ba2...1.7 KiB
/2da1b676b979a60ce3b9471d919f53c6523c606f10e6ba75fa3c1689...1.3 KiB
/ef0d5bf50bd1c7c225e07156087085a29bb9b23ee09368dee2338a64...2.7 KiB
/46cb15f41e094efb8cae3b4767556c7d932a7fd05886d258fed51d76...4.3 KiB
/3a0ead04b2715f1ee22b19e5a333be419c290b9c7cb7eda62b818987...3.4 KiB
/4a731fe934a9a52aa17ee80d974c0470f721a89cc6ea0854c08de1f4...7.9 KiB
js.rbxcdn.com/9731c232fa99c58b0dafafc81cc7905b.js36.6 KiB92 ms
/e02f5a0abf5eb291acae3d735979ca0b32d8c52b8ebc55a04ea8eaea...6.9 KiB
/730fcbf0eba6dd82de9b0029e157627f023e6f448059c5b4c6a4f356...1.4 KiB
/5f2ee2913bf919a8576bbe4120a6d41b933e814a4779a0a3fc1d9d94...1.2 KiB
/686bd55707be42af370b81d2f36f55b6e10c56edb105502b3f9f0a34...2.3 KiB
js.rbxcdn.com/0477c995fb7f2d892410c1f80189d044.js1.4 KiB
/537d3ec6e2cbc418604174fc9628078ed3fd4adc40e41637bc716c73...1.2 KiB
/3e545d98e98d8a8a188a4ef6ce70138b165954d7b45c0c0e54a5cf23...1.0 KiB
/1e772fa5c862bbef4e0d2aae68a846a579f8e9e62dffa030f5afe538...1.4 KiB
/75f88c6be976d07c384d9e74c7310550df9c9b712c6665be41c23e36...1.4 KiB
/7043536ec0248f489b68b5e62dd3336f6962fb50d18a65b766453a20...2.4 KiB
/aff2cdd67a84ad537fb2b3e904411bfa9eb52ab295378592e4a0e7d9...1.4 KiB
/4df6ec52559e1c250d3f2e8286e1ffca9f33998dcddcfaf096a4bcd3...1.7 KiB
/cbae3669084e2a46b6f7730f4ec3e09af389fc747b2affe7e5173e46...1.3 KiB
/d89d8f18191398b5eb1d491787e10c4913d8704ce12c032916499071...5.8 KiB
/bfc8e8849699c72898e770a6a0c44013191f0ab609e63ea6674d0a7c...1.4 KiB
/fff943c26ec0f63bd1976a3ab4acf926079c1c1f9b123a8f2a1f1ff7...9.1 KiB
/5b4d2974640af2d875cc0e4a6c40f515e8ad343b0525513f03d93c35...2.2 KiB
/13b3b0cf97cfb5da4538eb0c59f252188b4f724f9328c264a58d24a7...1.3 KiB
/c4b0a446b38285f3db5472340f4ef27d737c87b78348e36dc7acbcfe...1.7 KiB
/ebc57f8a4aabceab9f38dda880bf11c04f2c92f441e535f0bcaa21b2...1.2 KiB
/91916339a0d1695e194977e5770a69e5793455887fc79df2e8472902...94.1 KiB163 ms
/e7e3731285889059db29156a67cd4e5358a2dbf2102a88f49403c524...1.1 KiB
/730a5206adda5785166891801b1e0f9ae622a95558b260a144db6027...7.8 KiB
/06d6880d70f9f88c84a0a1d3444a3442c3d60464dcaf6c54e99dcfce...4.9 KiB
/e171b6008ca0199b35099c1bf14e13b50d48456d5f4db1208a2421ef...1.1 KiB
/6e0f5adb083cb82b74c8af579762247f69d57eaf609c9a1a89d0001d...1.6 KiB
/5fbd8389fb24177a5be64285e12645c445dee91f0a686d5bed5865f0...1.2 KiB
/cd456bb506f1b0b06a2eb645ca018d367185ca84725ec00d524e35ce...2.4 KiB
/94a14bf31ad0a75d3878f6772e6d5a251e7da9b64894e2176a07f65f...1.1 KiB
/993eb6cb9b2ed18baadeca1088086e99ede5c9877cb7fe9700e0c685...1.1 KiB
/babce206b492515143d22e96c7508c6c11b2f1298a66f5d98b0b2c56...1.1 KiB
/2b32b0cdda40fa428338e5d043a21dd395dab0dccbf6f25cdbdbd9c9...1.1 KiB
/01be43194ee6588c26b127e8f7aabc889f61bd3db2a7033988d7b320...1.5 KiB
/5a5300a5800d03e45af07f710bbcfae2d6a2f4edea9305cb47a488bb...1.2 KiB
/63dacb1fad541c7c50a937cbab11cd0858b78187acc6c0af105381aa...1.9 KiB
/6bde94ce5edf226fa026ca7fe61fabfe730ad09bfe351230b089230d...2.4 KiB
/b41227fe1ecc1f4409f2e33f02d4d968f6d6389349d2221f481ff3b3...1.1 KiB
/3fec2c529efef400a78a26a5c0a2d33e3e7ec0a13971616a31cd9582...1.1 KiB
/0fe97bffcb328f446dd0f247d2d42e740d354ef70bd54b9371ece139...1.4 KiB
/88bacf62dae20f1d352d30afbd3df4c64ba7a24c551c6ee02152719c...1.3 KiB
/9bfc48ea40a698035ea8cbe3d3e94bd06d3aac48969bedceb6d8ba5f...1.1 KiB
/f445adcf97b52ec04cf83b22e1360cf2a84202495440b92d8823d418...3.9 KiB
/f77e16b9fa5823882aaa0cdabade9706b9ba2b7e050d23d2831da138...3.0 KiB
/f861e92fec164f501fe3fb46c17fcb160a562e82d00c319892a85a88...14.8 KiB
/cfcd81415cfff6b93a5e4b3af0fc378467122eb075bc63b1934c6136...3.6 KiB
/1c8bc37109fd84f255ebad8b6f2edbbc9f0d2b97ef180131d9856ab1...7.1 KiB
/1e979a52d80126c2447674c17604baf65f73183fd44df1e6cd862feb...5.0 KiB
/215fe9b0fe92491f665645f65f57db6668d716af72e02465db259b71...3.0 KiB
/699733c92c2fba2e29883bd6080855e5d583b016eb27800ad49e7ce1...12.1 KiB
/7f4c2753c55dc89d4c9bf2dbfbf34e224194f6255457c0bd8c8c1ed0...1.1 KiB
/44ff0f2cc820b734456e36bcd3528a30460f0576ff6ff17478b2d848...1.3 KiB
/b8f8f15a57a66e73469ae72eea7d8905346afa78b9f2397627cd099f...1.0 KiB
/3e15e7f6a21f23fd11f44adba1b28a7d544b8a7ed36ebe3a9b67fe3a...4.4 KiB
/d7d4183c8033d692e0ca8ad5222b943fe27879f9a771c9bd98165ccc...1.3 KiB
/ef552f4ac70dd3209c70b94a377f66e3828905b9672bb67c66112240...4.8 KiB
/66b2fd496e668938e3b0e2d9a0c12f9f88c3a1a4974608f69059d806...1.5 KiB
/9bc4b17f1f2bafccec81a464524f3932280b78644b1b3f9a9120c53b...3.4 KiB341 ms
/f0222e7dc0204ab6a79fa5740c5b998bf004bd5a710da13369ce4e17...3.1 KiB
/41bd9f2b3a9485661a0c9637526141c355311899d473b7a4ad2cca83...956 B
/4d2c3582a51f181b1d85fcc080513179bebd9bbde79534e1803bb0bf...2.7 KiB
/550770736b9bc9ea1af289d3d412ece690ced7125fc53981cdf5b0ad...3.0 KiB
/bfb3e7a7efed2f8ba4d12dc9fdb70dce1ff97ee13e988833a8638cf3...3.1 KiB
/2f0fd0c2760ff1898187af6df3b764f4b08f77a315d0a33654f105f6...2.7 KiB
/1d87d1231072878a0f6164e84b8cfa6f90a1b31b18ba5d8f410b947d...2.3 KiB
/29890d1d92a7d851efde24099f886e7ccd737afaac326ce41a625834...15.9 KiB
/f237746d0aea12de9860040043f8d9bee7dab0baf4a87bb6fc87de6d...2.2 KiB
/47aa20a4d7ec095fabb9db116c99c5c798b2fa37161a5f59a340cb35...2.6 KiB
/bc6c479bd8ed8c94c8c16d5431728ac35cc8a90272c190a404874205...16.9 KiB273 ms
/cfd5a413ec221b8b28b5fb9ba4204c0b77b5548e78a608e3da01c928...1.6 KiB
/b2cff71de0c286e8f85b1a26a8b87a8cd7f77422c592849ad5114ac5...1.3 KiB
/d5a3728b78be729b693aadf79a1f45f0fa49c15fe863a0d7dd631b75...870 B
/85ba2eeb216cf055e8d7af85e1a8bf28ce285f0285a05f14a548bd48...1.8 KiB
/d45e200658a1343116bbf4a88c367d093758085e7d001918d641c85b...1.6 KiB
/3bca47a98d58fdf98a7063c4f3b390671e5326ed559813887f394587...2.3 KiB
/9d8d3c627f675cba564c21120936e361b3124a1d3224169a3b34077f...5.6 KiB
/3c4bd9b17b9020d9ebc87d4542a68a949a9de6150a55a92f0e655145...1.2 KiB
/7dfc7837b5da6850e13413c630b37da7e88aeb610ca2c7d4e8b71b02...8.3 KiB
/bc981bafa6b0a52c86d071d1f81b24168a8dd92e72b8ac52d37cb46b...2.2 KiB
/bf50ce56bc137c0faa936f661427d0ec07bddacc9b9f668b948a8577...20.8 KiB
/19ae6d0faa8112c20aed1d98dda027901bb1503cedf437634346296a...19.4 KiB
/f57ee051f13e54a366404a2df3512eb4b6d125a3c7c7c9c6b59482c0...1.9 KiB
/9614df97076ece81a878442b453b2614a3c683cb83cde0b50a71ad6a...2.3 KiB
/7e348738266e9ea2bae9314a2d26b33618c6f4cf3c527b11023620d9...1.5 KiB
www.roblox.com/js/utilities/bundleVerifier.js?v=91dceb4978eda412b09842312dd6cbaa3.3 KiB

Your first network request is the most important. Reduce its latency by avoiding redirects, ensuring a fast server response, and enabling text compression.

Why this matters

Performance issues directly impact user engagement and conversion rates.

These insights are also available in the Chrome DevTools Performance Panel - record a trace to view more detailed information.

Redirects introduce additional delays before the page can be loaded. Learn how to avoid page redirects.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 218 ms
URLTime Spent
roblox.com/218 ms
www.roblox.com/0.0 ms

These are the largest layout shifts observed on the page. Each table item represents a single layout shift, and shows the element that shifted the most. Below each item are possible root causes that led to the layout shift. Some of these layout shifts may not be included in the CLS metric value due to windowing. Learn how to improve CLS

Why this matters

Performance issues directly impact user engagement and conversion rates.

ElementLayout shift score
SIGN UP AND START HAVING FUN! Birthday Month January February March April May J… section#RollerContainer > div#InnerRollerContainer > div.lower-logo-container > div#signup-container
0.393
About Us Jobs Blog Parents Buy Gift Cards Help Terms Accessibility Privacy Your… body#rbx-body > div.dark-theme > footer#footer-container
0.018

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.

Why this matters

Performance issues directly impact user engagement and conversion rates.

TTI

Diagnostics

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.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 90 ms 105.9 KiB

Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. Learn how to reduce unused JavaScript.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 1.3 s 1.4 MiB
URLTransfer SizeEst Savings
/63b59480fef503ff6648900d1051bae7531757a38ce24f77587552fc...387.3 KiB201.1 KiB
/9ae06f5f71e872379b9a7d47e1e9359594e1090515848ae2539157e8...215.4 KiB177.9 KiB
/b27075e463237535a1fea6937020064e1b530fa477e02c255420ccea...197.4 KiB151.6 KiB
/c035e21695db8d5ed0e8e0374f200db819c267ecebcc72afc36d3f2a...186.5 KiB130.1 KiB
/7186c09cc12cb47a4b6c2ee1fc627e4980305f0fb38e08f59151a1d0...140.2 KiB103.3 KiB
js.rbxcdn.com/3756ad214dde52cb58a1300177547475.js88.7 KiB70.9 KiB
/81cd89f4dfeb52a295ef0882d3f29195c1df16b56a802f40688c1055...101.7 KiB70.5 KiB
/932cd731257164fc9eba426e6b3c5c8d08469faafc68ceb51f979f33...80.5 KiB66.0 KiB
/5b2f2f6442447efaf65971ce280a154b5c278d234751fac0d4a3ae65...103.2 KiB65.3 KiB
/c52d5e9748da5d99576013a33fb222b778dd3b8e4b2450beb3a09467...56.6 KiB44.7 KiB
/22d5ad7788622164771c3a767cdb21d73ca0b9cbfd24dd9b918fd3d7...59.4 KiB42.6 KiB
/c27f57f4a397dabc2fe3b74fec93c2401913bdf49373f9339c00b6f1...77.0 KiB36.2 KiB
/118998e29ce4dfc712b4033370590464a3c9610c1b49367b24226274...58.9 KiB34.8 KiB
/e43939d84afb174603bd07f8225fab86f8effc3c2cec52531e82714b...49.1 KiB33.8 KiB
/922915020f866a8a89750cf812186ac08d56f7dfb11c67077046f98b...42.1 KiB33.2 KiB
/40b0702cc10768dc66bca19c3669f23c17174215f5ac5f4f78d9eab4...48.4 KiB32.2 KiB
/6d1937b2170c00984f8af866543570de8c217c36809830572e00d9e1...50.3 KiB31.0 KiB
/d7bfb029d7b5e90a80fe103668882778c48b26b1c4e3384c3fee6e4f...36.0 KiB29.9 KiB
/5c8a2ba3737908f693394045e81ebd71c77cde6f87550ea51f7833e8...67.7 KiB29.5 KiB
js.rbxcdn.com/9731c232fa99c58b0dafafc81cc7905b.js36.0 KiB26.7 KiB
/84591cce51b4be3807c489abb82ecfb3b8974854dede1f2178679caa...31.7 KiB26.3 KiB
/758cbadc7893425f24985e142c6269c05a6bac374561454fd3b7386d...31.5 KiB21.9 KiB

Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this. Learn how to minimize main-thread work

Why this matters

Performance issues directly impact user engagement and conversion rates.

CategoryTime Spent
Script Evaluation1.1 s
Other433 ms
Script Parsing & Compilation341 ms
Style & Layout102 ms
Parse HTML & CSS70 ms
Garbage Collection31 ms
Rendering10 ms

Many navigations are performed by going back to a previous page, or forwards again. The back/forward cache (bfcache) can speed up these return navigations. Learn more about the bfcache

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failure reasonFailure type
The page has an unload handler in the main frame.Actionable
Pages with cache-control:no-store header cannot enter back/forward cache.Actionable

Minifying JavaScript files can reduce payload sizes and script parse time. Learn how to minify JavaScript.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 0.0 ms 6.6 KiB
URLTransfer SizeEst Savings
js.rbxcdn.com/a3fe79f1bfdd96b7f0ad20eab2de7a05.js42.5 KiB6.6 KiB

Set an explicit width and height on image elements to reduce layout shifts and improve CLS. Learn how to set image dimensions

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL
Roblox on Galaxy Store ul.justify-center > li > a > img.height-1200
/a47d34e15ee107ca785d669df617c993-galaxy-badge-en_us-D53P...
Roblox on Amazon Store ul.justify-center > li > a > img.height-1200
/484d5f5fbd1e763ce57ae6ad39d88a6a-amazon-badge-en_us-TGDZ...
Get it on Google Play ul.justify-center > li > a > img.height-1200
/df567a27fa3f48d96cc95c01a1703b87-google-badge-en_us-MLKM...
Roblox on PlayStation ul.justify-center > li > a > img.height-1200
/319095e8b40952b12b266eb47a2b2c40-playstation-badge-en_us...
Roblox on Meta Quest ul.justify-center > li > a > img.height-1200
/0eb85925bd5a3e685d5cdfc482fad198-meta-quest-badge-en_us-...
Roblox on Microsoft Store ul.justify-center > li > a > img.height-1200
/31d4e713ead43eb25da2aea42b6e36e9-microsoft-badge-en_us-V...
Roblox on Xbox Store ul.justify-center > li > a > img.height-1200
images.rbxcdn.com/1c0855f1be21f499eb7a4027e5dd1d86-xbox-badge-en_us-OXEWQ2KC.svg
Roblox on App Store ul.justify-center > li > a > img.height-1200
/2928664fe1fc6aca88583a6f606d60ba-apple-badge-en_us-ULTWH...
ul.row > li.footer-link > button.text-footer-nav > img.footer-postfixIcon ul.row > li.footer-link > button.text-footer-nav > img.footer-postfixIcon

More information about the performance of your application. These numbers don't directly affect the Performance score.

Max Potential First Input Delay 80 ms
Optimize DOM size
Forced reflow
LCP breakdown
Modern HTTP
Optimize viewport for mobile
Minify CSS
User Timing marks and measures 1 user timing
JavaScript execution time 1.0 s
Avoid long main-thread tasks 8 long tasks found
Network Requests
Network Round Trip Times 10 ms
Server Backend Latencies 120 ms
Tasks
Diagnostics
Metrics
Screenshot Thumbnails
Final Screenshot
Script Treemap Data
Resources Summary
Initial server response time was short Root document took 50 ms
INP breakdown
Avoid non-composited animations
89

Accessibility

These checks highlight opportunities to improve the accessibility of your web app. Automatic detection can only detect a subset of issues and does not guarantee the accessibility of your web app, so manual testing is also encouraged.

Names and labels

When a button doesn't have an accessible name, screen readers announce it as "button", making it unusable for users who rely on screen readers. Learn how to make buttons more accessible.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
English (United States) ▼ div.col-sm-6 > div.language-selector-wrapper > div.flex > button.relative

Form elements without effective labels can create frustrating experiences for screen reader users. Learn more about the `select` element.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Month January February March April May June July August September October Novem… div.form-group > div.form-control > div.month > select#MonthDropdown
Day 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 … div.form-group > div.form-control > div.day > select#DayDropdown
Year 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007… div.form-group > div.form-control > div.year > select#YearDropdown

These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.

Best practices

One main landmark helps screen reader users navigate a web page. Learn more about landmarks.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
html html

These items highlight common accessibility best practices.

Interactive controls are keyboard focusable
Interactive elements indicate their purpose and state
The page has a logical tab order
Visual order on the page follows DOM order
User focus is not accidentally trapped in a region
The user's focus is directed to new content added to the page
HTML5 landmark elements are used to improve navigation
Offscreen content is hidden from assistive technology
Custom controls have associated labels
Custom controls have ARIA roles
`[aria-*]` attributes match their roles
`[aria-hidden="true"]` is not present on the document `<body>`
`[role]`s have all required `[aria-*]` attributes
`[role]` values are valid
`[aria-*]` attributes have valid values
`[aria-*]` attributes are valid and not misspelled
Image elements have `[alt]` attributes
Form elements have associated labels
`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.
ARIA attributes are used as specified for the element's role
`[aria-hidden="true"]` elements do not contain focusable descendents
Elements use only permitted ARIA attributes
Background and foreground colors have a sufficient contrast ratio
Document has a `<title>` element
`<html>` element has a `[lang]` attribute
`<html>` element has a valid value for its `[lang]` attribute
Links are distinguishable without relying on color.
Links have a discernible name
Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
List items (`<li>`) are contained within `<ul>`, `<ol>` or `<menu>` parent elements
Touch targets have sufficient size and spacing.
Heading elements appear in a sequentially-descending order
Deprecated ARIA roles were not used
`[accesskey]` values are unique
`button`, `link`, and `menuitem` elements have accessible names
Elements with `role="dialog"` or `role="alertdialog"` have accessible names.
ARIA input fields have accessible names
ARIA `meter` elements have accessible names
ARIA `progressbar` elements have accessible names
Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.
`[role]`s are contained by their required parent element
Elements with the `role=text` attribute do not have focusable descendents.
ARIA toggle fields have accessible names
ARIA `tooltip` elements have accessible names
ARIA `treeitem` elements have accessible names
The page contains a heading, skip link, or landmark region
`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.
Definition list items are wrapped in `<dl>` elements
ARIA IDs are unique
No form fields have multiple labels
`<frame>` or `<iframe>` elements have a title
`<html>` element has an `[xml:lang]` attribute with the same base language as the `[lang]` attribute.
Input buttons have discernible text.
`<input type="image">` elements have `[alt]` text
The document does not use `<meta http-equiv="refresh">`
`<object>` elements have alternate text
Skip links are focusable.
No element has a `[tabindex]` value greater than 0
Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.
`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.
`[lang]` attributes have a valid value
`<video>` elements contain a `<track>` element with `[kind="captions"]`
Tables have different content in the summary attribute and `<caption>`.
All heading elements contain content.
Uses ARIA roles only on compatible elements
Image elements do not have `[alt]` attributes that are redundant text.
Identical links have the same purpose.
Elements with visible text labels have matching accessible names.
Tables use `<caption>` instead of cells with the `[colspan]` attribute to indicate a caption.
`<td>` elements in a large `<table>` have one or more table headers.
77

Best Practices

General

Deprecated APIs will eventually be removed from the browser. Learn more about deprecated APIs.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Deprecation / WarningSource
Unload event listeners are deprecated and will be removed.

Errors logged to the console indicate unresolved problems. They can come from network request failures and other browser concerns. Learn more about this errors in console diagnostic audit

Why this matters

Performance issues directly impact user engagement and conversion rates.

SourceDescription
Access to XMLHttpRequest at 'https://realtime.roblox.com/notifications/negotiate?clientProtocol=1.5&connectionData=%5B%7B%22name%22%3A%22usernotificationhub%22%7D%5D&urlLocale=en_us&_=1776358809520' from origin 'https://www.roblox.com' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.
Access to XMLHttpRequest at 'https://realtime.roblox.com/notifications/negotiate?clientProtocol=1.5&connectionData=%5B%7B%22name%22%3A%22usernotificationhub%22%7D%5D&urlLocale=en_us&_=1776358809521' from origin 'https://www.roblox.com' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.
Failed to load resource: net::ERR_FAILED
Failed to load resource: net::ERR_FAILED
Failed to load resource: the server responded with a status of 401 ()
Uses HTTPS
Avoids third-party cookies
Allows users to paste into input fields
Avoids requesting the geolocation permission on page load
Avoids requesting the notification permission on page load
Displays images with correct aspect ratio
Serves images with appropriate resolution
Page has the HTML doctype
Properly defines charset
No issues in the `Issues` panel in Chrome Devtools
Ensure CSP is effective against XSS attacks
Use a strong HSTS policy
Mitigate DOM-based XSS with Trusted Types
Detected JavaScript libraries
Page has valid source maps
Redirects HTTP traffic to HTTPS
Ensure proper origin isolation with COOP
Mitigate clickjacking with XFO or CSP
100

SEO

These checks ensure that your page is following basic search engine optimization advice. There are many additional factors Lighthouse does not score here that may affect your search ranking, including performance on Core Web Vitals. Learn more about Google Search Essentials.

Structured data is valid
Page isn’t blocked from indexing
Document has a `<title>` element
Document has a meta description
Page has successful HTTP status code
Links have descriptive text
Links are crawlable
robots.txt is valid
Image elements have `[alt]` attributes
Document has a valid `hreflang`
Document has a valid `rel=canonical`

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