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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.

95

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.

A long cache lifetime can speed up repeat visits to your page. Learn more about caching.

Why this matters

Performance issues directly impact user engagement and conversion rates.

RequestCache TTLTransfer Size
id.nbcuni.com/websdk/v2/identity-sdk.min.js600.0 s210.3 KiB
c.amazon-adsystem.com/aax2/apstag.js3600.0 s90.9 KiB
cdn.cookielaw.org/scripttemplates/202505.2.0/otBannerSdk.js86400.0 s119.3 KiB
jssdkcdns.mparticle.com/js/v2/us1-58b94ff38714bc47bdab2e66cf8e063c/mparticle.js3600.0 s58.1 KiB
assets.adobedtm.com/77ca722dd820/42d7a5c91c9d/launch-1d9325bfcfe3.min.js3600.0 s45.3 KiB
pub.doubleverify.com/dvtag/40158041/DV1940158/pub.js900.0 s33.6 KiB
www.syfy.com/libraries/swiper-mini/swiper-bundle.min.js?v=11.2.8900.0 s25.4 KiB
cdn.cookielaw.org/scripttemplates/202505.2.0/otGPP.js86400.0 s22.5 KiB
/logos/941b48f1-4637-4ecd-b01d-629494daf8b2/0198a5b3-a6ba...86400.0 s16.2 KiB
cdn.cookielaw.org/consent/01979ef1-ddfd-766c-87f7-cf5b937dd428/otSDKStub.js86400.0 s7.7 KiB
cdn.cookielaw.org/logos/static/powered_by_logo.svg86400.0 s2.5 KiB
config.aps.amazon-adsystem.com/configs/32193600.0 s846 B
/77ca722dd820/42d7a5c91c9d/0ba818ebfb81/RC74ad4de95cc2412...3600.0 s592 B
geolocation.onetrust.com/cookieconsentpub/v1/geo/location/dnsfeed0.0 ms247 B
cdn.cookielaw.org/opt-out/otCCPAiab.js86400.0 s0 B

A forced reflow occurs when JavaScript queries geometric properties (such as offsetWidth) after styles have been invalidated by a change to the DOM state. This can result in poor performance. Learn more about forced reflows and possible mitigations.

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:source label:Top function call valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]
items: [map[reflowTime:4.202 source:map[column:156 line:5 type:source-location url:https://www.syfy.com/sites/syfy/files/js/js_4rwGwTfiGRTxCXsvjukH8Iw09JxuSVPT30ihk_o4wQ4.js?scope=header&delta=0&language=en&theme=syfy&include=eJyNUVtywjAMvFDBR9IotiBqhJVKcjvp6etAoUwKnX5Z2sfYu85qlIq1GWUf2vJI71TDd0EeL8KHfizSFew4CEGrolhgxFqE7E5wFB1Qdp6N5_A7YiRTMHL-XPUOWHQgwIqyBGdPmx1GPRGEYZ64Hv9jmPH4t8E5CLIWgldfeS49IccCHhjfVrL0lFk9gq3msaBNsqTNvvKnGa1f1vPepv1MmDVP4G241MJan2h_p9ZKYc0jceVYgTVFGqwX37OIml9ByGjanMQvXV_XB7x_8Ez2o3hrnCfhOqXb9AiD8xt8OSybb_4CrmrlVA urlProvider:network]]]
headings: [map[key:source label:Source valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]
items: [map[reflowTime:26.326 source:map[type:text value:[unattributed]]] map[reflowTime:0.501 source:map[column:84992 line:2 type:source-location url:https://www.syfy.com/sites/syfy/files/js/js_nDQLYdWjPTcTaTEGeObUHmwug2XAPDAJMk9OvNISVLA.js?scope=footer&delta=0&language=en&theme=syfy&include=eJyNUVtywjAMvFDBR9IotiBqhJVKcjvp6etAoUwKnX5Z2sfYu85qlIq1GWUf2vJI71TDd0EeL8KHfizSFew4CEGrolhgxFqE7E5wFB1Qdp6N5_A7YiRTMHL-XPUOWHQgwIqyBGdPmx1GPRGEYZ64Hv9jmPH4t8E5CLIWgldfeS49IccCHhjfVrL0lFk9gq3msaBNsqTNvvKnGa1f1vPepv1MmDVP4G241MJan2h_p9ZKYc0jceVYgTVFGqwX37OIml9ByGjanMQvXV_XB7x_8Ez2o3hrnCfhOqXb9AiD8xt8OSybb_4CrmrlVA urlProvider:network]] map[reflowTime:1.112 source:map[column:83946 line:2 type:source-location url:https://www.syfy.com/sites/syfy/files/js/js_nDQLYdWjPTcTaTEGeObUHmwug2XAPDAJMk9OvNISVLA.js?scope=footer&delta=0&language=en&theme=syfy&include=eJyNUVtywjAMvFDBR9IotiBqhJVKcjvp6etAoUwKnX5Z2sfYu85qlIq1GWUf2vJI71TDd0EeL8KHfizSFew4CEGrolhgxFqE7E5wFB1Qdp6N5_A7YiRTMHL-XPUOWHQgwIqyBGdPmx1GPRGEYZ64Hv9jmPH4t8E5CLIWgldfeS49IccCHhjfVrL0lFk9gq3msaBNsqTNvvKnGa1f1vPepv1MmDVP4G241MJan2h_p9ZKYc0jceVYgTVFGqwX37OIml9ByGjanMQvXV_XB7x_8Ez2o3hrnCfhOqXb9AiD8xt8OSybb_4CrmrlVA urlProvider:network]] map[reflowTime:0.78 source:map[column:50335 line:2 type:source-location url:https://www.syfy.com/sites/syfy/files/js/js_nDQLYdWjPTcTaTEGeObUHmwug2XAPDAJMk9OvNISVLA.js?scope=footer&delta=0&language=en&theme=syfy&include=eJyNUVtywjAMvFDBR9IotiBqhJVKcjvp6etAoUwKnX5Z2sfYu85qlIq1GWUf2vJI71TDd0EeL8KHfizSFew4CEGrolhgxFqE7E5wFB1Qdp6N5_A7YiRTMHL-XPUOWHQgwIqyBGdPmx1GPRGEYZ64Hv9jmPH4t8E5CLIWgldfeS49IccCHhjfVrL0lFk9gq3msaBNsqTNvvKnGa1f1vPepv1MmDVP4G241MJan2h_p9ZKYc0jceVYgTVFGqwX37OIml9ByGjanMQvXV_XB7x_8Ez2o3hrnCfhOqXb9AiD8xt8OSybb_4CrmrlVA urlProvider:network]] map[reflowTime:0.48 source:map[column:50393 line:2 type:source-location url:https://www.syfy.com/sites/syfy/files/js/js_nDQLYdWjPTcTaTEGeObUHmwug2XAPDAJMk9OvNISVLA.js?scope=footer&delta=0&language=en&theme=syfy&include=eJyNUVtywjAMvFDBR9IotiBqhJVKcjvp6etAoUwKnX5Z2sfYu85qlIq1GWUf2vJI71TDd0EeL8KHfizSFew4CEGrolhgxFqE7E5wFB1Qdp6N5_A7YiRTMHL-XPUOWHQgwIqyBGdPmx1GPRGEYZ64Hv9jmPH4t8E5CLIWgldfeS49IccCHhjfVrL0lFk9gq3msaBNsqTNvvKnGa1f1vPepv1MmDVP4G241MJan2h_p9ZKYc0jceVYgTVFGqwX37OIml9ByGjanMQvXV_XB7x_8Ez2o3hrnCfhOqXb9AiD8xt8OSybb_4CrmrlVA urlProvider:network]] map[reflowTime:0.475 source:map[column:50457 line:2 type:source-location url:https://www.syfy.com/sites/syfy/files/js/js_nDQLYdWjPTcTaTEGeObUHmwug2XAPDAJMk9OvNISVLA.js?scope=footer&delta=0&language=en&theme=syfy&include=eJyNUVtywjAMvFDBR9IotiBqhJVKcjvp6etAoUwKnX5Z2sfYu85qlIq1GWUf2vJI71TDd0EeL8KHfizSFew4CEGrolhgxFqE7E5wFB1Qdp6N5_A7YiRTMHL-XPUOWHQgwIqyBGdPmx1GPRGEYZ64Hv9jmPH4t8E5CLIWgldfeS49IccCHhjfVrL0lFk9gq3msaBNsqTNvvKnGa1f1vPepv1MmDVP4G241MJan2h_p9ZKYc0jceVYgTVFGqwX37OIml9ByGjanMQvXV_XB7x_8Ez2o3hrnCfhOqXb9AiD8xt8OSybb_4CrmrlVA urlProvider:network]] map[reflowTime:0.134 source:map[column:49637 line:2 type:source-location url:https://www.syfy.com/sites/syfy/files/js/js_nDQLYdWjPTcTaTEGeObUHmwug2XAPDAJMk9OvNISVLA.js?scope=footer&delta=0&language=en&theme=syfy&include=eJyNUVtywjAMvFDBR9IotiBqhJVKcjvp6etAoUwKnX5Z2sfYu85qlIq1GWUf2vJI71TDd0EeL8KHfizSFew4CEGrolhgxFqE7E5wFB1Qdp6N5_A7YiRTMHL-XPUOWHQgwIqyBGdPmx1GPRGEYZ64Hv9jmPH4t8E5CLIWgldfeS49IccCHhjfVrL0lFk9gq3msaBNsqTNvvKnGa1f1vPepv1MmDVP4G241MJan2h_p9ZKYc0jceVYgTVFGqwX37OIml9ByGjanMQvXV_XB7x_8Ez2o3hrnCfhOqXb9AiD8xt8OSybb_4CrmrlVA urlProvider:network]] map[reflowTime:0.163 source:map[column:49615 line:2 type:source-location url:https://www.syfy.com/sites/syfy/files/js/js_nDQLYdWjPTcTaTEGeObUHmwug2XAPDAJMk9OvNISVLA.js?scope=footer&delta=0&language=en&theme=syfy&include=eJyNUVtywjAMvFDBR9IotiBqhJVKcjvp6etAoUwKnX5Z2sfYu85qlIq1GWUf2vJI71TDd0EeL8KHfizSFew4CEGrolhgxFqE7E5wFB1Qdp6N5_A7YiRTMHL-XPUOWHQgwIqyBGdPmx1GPRGEYZ64Hv9jmPH4t8E5CLIWgldfeS49IccCHhjfVrL0lFk9gq3msaBNsqTNvvKnGa1f1vPepv1MmDVP4G241MJan2h_p9ZKYc0jceVYgTVFGqwX37OIml9ByGjanMQvXV_XB7x_8Ez2o3hrnCfhOqXb9AiD8xt8OSybb_4CrmrlVA urlProvider:network]] map[reflowTime:0.557 source:map[column:51395 line:2 type:source-location url:https://www.syfy.com/sites/syfy/files/js/js_nDQLYdWjPTcTaTEGeObUHmwug2XAPDAJMk9OvNISVLA.js?scope=footer&delta=0&language=en&theme=syfy&include=eJyNUVtywjAMvFDBR9IotiBqhJVKcjvp6etAoUwKnX5Z2sfYu85qlIq1GWUf2vJI71TDd0EeL8KHfizSFew4CEGrolhgxFqE7E5wFB1Qdp6N5_A7YiRTMHL-XPUOWHQgwIqyBGdPmx1GPRGEYZ64Hv9jmPH4t8E5CLIWgldfeS49IccCHhjfVrL0lFk9gq3msaBNsqTNvvKnGa1f1vPepv1MmDVP4G241MJan2h_p9ZKYc0jceVYgTVFGqwX37OIml9ByGjanMQvXV_XB7x_8Ez2o3hrnCfhOqXb9AiD8xt8OSybb_4CrmrlVA urlProvider:network]] map[reflowTime:15.895 source:map[column:4533 line:12 type:source-location url:https://www.syfy.com/libraries/swiper-mini/swiper-bundle.min.js?v=11.2.8 urlProvider:network]] map[reflowTime:18.497 source:map[column:10168 line:12 type:source-location url:https://www.syfy.com/libraries/swiper-mini/swiper-bundle.min.js?v=11.2.8 urlProvider:network]] map[reflowTime:1.92 source:map[column:10648 line:12 type:source-location url:https://www.syfy.com/libraries/swiper-mini/swiper-bundle.min.js?v=11.2.8 urlProvider:network]] map[reflowTime:0.12 source:map[column:16136 line:12 type:source-location url:https://www.syfy.com/libraries/swiper-mini/swiper-bundle.min.js?v=11.2.8 urlProvider:network]] map[reflowTime:0.349 source:map[column:47714 line:12 type:source-location url:https://www.syfy.com/libraries/swiper-mini/swiper-bundle.min.js?v=11.2.8 urlProvider:network]] map[reflowTime:0.352 source:map[column:52 line:575 type:source-location url:https://app.mps.vsnt.net/fetch/ext/load-syfy-d8-web.js?nowrite=2 urlProvider:network]] map[reflowTime:0.098 source:map[column:34 line:681 type:source-location url:https://app.mps.vsnt.net/fetch/ext/load-syfy-d8-web.js?nowrite=2 urlProvider:network]] map[reflowTime:6.212 source:map[column:81621 line:18 type:source-location url:https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604170101/pubads_impl.js?cb=31097963 urlProvider:network]] map[reflowTime:0.346 source:map[column:81727 line:18 type:source-location url:https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202604170101/pubads_impl.js?cb=31097963 urlProvider:network]]]

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.

More than 4 preconnect connections were found. These should be used sparingly and only to the most important origins.
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
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

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.

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 Size
/sites/syfy/files/css/css_fJuI3mh3YgkeWPdSlYRqtvl_oIBslE5...25.7 KiB
/sites/syfy/files/js/js_4rwGwTfiGRTxCXsvjukH8Iw09JxuSVPT3...4.6 KiB
/sites/syfy/files/js/js_0kyLY_f3HxB9hlcG53quogzG5ZEJ5vGEz...661 B
/sites/syfy/files/css/css_ZpZuI0Sud-mH76z-QlyFvfY63S0Ehho...6.1 KiB

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: 207 ms
URLTime Spent
syfy.com/207 ms
www.syfy.com/0.0 ms

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 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: 30 ms 563.1 KiB
URLTransfer SizeEst Savings
id.nbcuni.com/websdk/v2/identity-sdk.min.js209.8 KiB158.5 KiB
/pagead/managed/js/gpt/m202604170101/pubads_impl.js?cb=31...187.4 KiB123.2 KiB
micro.rubiconproject.com/prebid/dynamic/24610.js129.9 KiB93.6 KiB
cdn.cookielaw.org/scripttemplates/202505.2.0/otBannerSdk.js119.0 KiB60.7 KiB
c.amazon-adsystem.com/aax2/apstag.js90.5 KiB39.0 KiB
jssdkcdns.mparticle.com/js/v2/us1-58b94ff38714bc47bdab2e66cf8e063c/mparticle.js57.8 KiB34.4 KiB
app.mps.vsnt.net/fetch/ext/load-syfy-d8-web.js?nowrite=257.6 KiB28.6 KiB
/sites/syfy/files/js/js_nDQLYdWjPTcTaTEGeObUHmwug2XAPDAJM...46.7 KiB25.0 KiB

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 17.7 KiB
URLTransfer SizeEst Savings
app.mps.vsnt.net/fetch/ext/load-syfy-d8-web.js?nowrite=257.6 KiB17.7 KiB

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: 0.0 ms 42.3 KiB
URLTransfer SizeEst Savings
/sites/syfy/files/css/css_fJuI3mh3YgkeWPdSlYRqtvl_oIBslE5...25.2 KiB23.1 KiB
21.9 KiB19.2 KiB

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

●Layout shift culprits
●Optimize DOM size
●Font display
●Improve image delivery
●LCP breakdown
●LCP request discovery
●Modern HTTP
●Optimize viewport for mobile
●Max Potential First Input Delay 60 ms
●Minify CSS
●Avoids enormous network payloads Total size was 1,637 KiB
●User Timing marks and measures 7 user timings
●JavaScript execution time 0.8 s
●Minimizes main-thread work 1.7 s
●Avoid long main-thread tasks 5 long tasks found
●Avoid non-composited animations 61 animated elements found
●Image elements have explicit `width` and `height`
●Page didn't prevent back/forward cache restoration
●Network Requests
●Network Round Trip Times 30 ms
●Server Backend Latencies 70 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Initial server response time was short Root document took 50 ms
●Avoid large layout shifts 15 layout shifts found
○INP breakdown
97

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.

Tables and lists

Screen readers have a specific way of announcing lists. Ensuring proper list structure aids screen reader output. Learn more about proper list structure.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
HBO's Harry Potter Show To Feature These Magical Beasts Read Now Everything We … div.content-primary > section.hero-carousel > div.swiper > ul#swiper-wrapper-127efdb1b5488a7b
SYFY WIRE How Twilight Zone Led To Hollywood Creative Protection SYFY WIRE Jack… div.site-section-wrapper > div.swiper__carousel > div.swiper > ul#swiper-wrapper-1a7df61d10cbfc97e
1 / 12 div.site-section-wrapper > div.swiper__carousel > div.swiper > ul#swiper-wrapper-211bd4b35e358d22
1 / 6 div.site-section-wrapper > div.swiper__carousel > div.swiper > ul#swiper-wrapper-25cac465ceda8876
1 / 12 div.site-section-wrapper > div.swiper__carousel > div.swiper > ul#swiper-wrapper-630a38d410dbcb084

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

○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
●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
●`[role]` values are valid
●`[aria-*]` attributes have valid values
●`[aria-*]` attributes are valid and not misspelled
●Buttons have an accessible name
●Image elements have `[alt]` attributes
●`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.
●`button`, `link`, and `menuitem` elements have accessible names
●ARIA attributes are used as specified for the element's role
●Elements with `role="dialog"` or `role="alertdialog"` have accessible names.
●`[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
●List items (`<li>`) are contained within `<ul>`, `<ol>` or `<menu>` parent elements
●No element has a `[tabindex]` value greater than 0
●Touch targets have sufficient size and spacing.
●Heading elements appear in a sequentially-descending order
●Document has a main landmark.
●Deprecated ARIA roles were not used
●Uses ARIA roles only on compatible elements
●Identical links have the same purpose.
●Elements with visible text labels have matching accessible names.
○`[accesskey]` values are unique
○ARIA input fields have accessible names
○ARIA `meter` elements have accessible names
○ARIA `progressbar` elements have accessible names
○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
○Form elements have associated labels
○The document does not use `<meta http-equiv="refresh">`
○`<object>` elements have alternate text
○Select elements have associated label elements.
○Skip links are focusable.
○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.
○Image elements do not have `[alt]` attributes that are redundant text.
○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.
92

Best Practices

User Experience

Image display dimensions should match natural aspect ratio. Learn more about image aspect ratio.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLAspect Ratio (Displayed)Aspect Ratio (Actual)
Harry Potter HBO Fantastic Beasts inset header div.teaser__image-wrapper > figure.teaser__image > picture > img
/sites/syfy/files/styles/16_9_xl/public/2026/04/inset-art...900 x 504 (1.79)960 x 540 (1.78)
Ryan Coogler X-Files inset header div.teaser__image-wrapper > figure.teaser__image > picture > img
/sites/syfy/files/styles/16_9_xl/public/2026/04/inset-art...900 x 504 (1.79)960 x 540 (1.78)
Kit Harington as Jon Snow holding up his wolf puppy in the Game of Thrones pilo… div.teaser__image-wrapper > figure.teaser__image > picture > img
/sites/syfy/files/styles/16_9_xl/public/2026/04/DRUPAL6_A...900 x 504 (1.79)960 x 540 (1.78)
Artemis II splashdown div.teaser__image-wrapper > figure.teaser__image > picture > img
/sites/syfy/files/styles/16_9_xl/public/2026/04/artemisii...900 x 504 (1.79)960 x 540 (1.78)
Twilight Zone Still Valley header div.teaser__image-wrapper > figure.teaser__image > picture > img
/sites/syfy/files/styles/16_9_xl/public/2026/04/article-p...900 x 504 (1.79)960 x 540 (1.78)
Disclosure Day UFO header div.teaser__image-wrapper > figure.teaser__image > picture > img
/sites/syfy/files/styles/16_9_xl/public/2026/04/article-p...900 x 504 (1.79)960 x 540 (1.78)

General

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
/id?d_visid_ver=5.5.0&d_fieldgroup=A&mcorgid=8CF467C25245...
Failed to load resource: net::ERR_CERT_COMMON_NAME_INVALID
jssdkcdns.mparticle.com/js/v2/us1-58b94ff38714bc47bdab2e66cf8e063c/mparticle.js line 40, col 182681
Your workspace is not enabled to retrieve user audiences.
●Uses HTTPS
●Avoids deprecated APIs
●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
●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
●Ensure proper origin isolation with COOP
●Mitigate DOM-based XSS with Trusted Types
●Detected JavaScript libraries
●Page has valid source maps
○Redirects HTTP traffic to HTTPS
○Use a strong HSTS policy
○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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