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Lighthouse Mobile

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

Audit breakdown by category with detailed findings.

36

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
static-web.grammarly.com/shared/fonts/inter-semi-bold.woff20.0 ms188.1 KiB
static-web.grammarly.com/shared/fonts/inter-medium.woff20.0 ms187.0 KiB
transcend-cdn.com/cm/1c1f8e90-47d0-4bba-a1a2-472d59b002a2/ui.js60.0 s93.1 KiB
connect.facebook.net/en_US/fbevents.js1200.0 s95.0 KiB
transcend-cdn.com/cm/1c1f8e90-47d0-4bba-a1a2-472d59b002a2/airgap.js60.0 s53.3 KiB
static-web.grammarly.com/shared/fonts/glyph-bold.woff20.0 ms36.3 KiB
static-web.grammarly.com/shared/fonts/glyph-regular.woff20.0 ms35.9 KiB
/signals/config/828127113879905?v=2.9.291&r=stable&domain...1200.0 s37.4 KiB
static-web.grammarly.com/shared/fonts/matter-medium.woff20.0 ms31.6 KiB
static-web.grammarly.com/shared/fonts/matter-semi-bold.woff20.0 ms31.4 KiB
utt.impactcdn.com/A6052161-35a5-43f1-815e-1b952086565a1.js900.0 s22.1 KiB
www.google-analytics.com/analytics.js7200.0 s20.9 KiB
js.adsrvr.org/up_loader.1.1.0.js0.0 ms11.2 KiB
js.adsrvr.org/up_loader.1.1.0.js0.0 ms11.2 KiB
scripts.clarity.ms/0.8.59/clarity.js86400.0 s26.2 KiB
a.quora.com/qevents.js14400.0 s14.7 KiB
cdn.pdst.fm/ping.min.js3600.0 s10.3 KiB
collector-21641.us.tvsquared.com/tv2track.js600.0 s8.7 KiB
snap.licdn.com/li.lms-analytics/insight.min.js86400.0 s18.7 KiB
/cms/master/public/fonts/MessinaSerifWeb-VF-Upright.woff2604800.0 s57.4 KiB
js.zi-scripts.com/zi-tag.js0.0 ms5.6 KiB
d34r8q7sht0t9k.cloudfront.net/tag.js0.0 ms5.4 KiB
static-web.grammarly.com/cms/master/public/fonts/MatterforGrammarlyVF.woff2604800.0 s33.8 KiB
/1155799/trc/3/json?tim=1775594476463&data=%7B%22id%22%3A...0.0 ms2.5 KiB
/1326138/trc/3/json?tim=1775594476134&data=%7B%22id%22%3A...0.0 ms2.3 KiB
static-web.grammarly.com/web-heartbeat/latest/index.js0.0 ms1.9 KiB
js.adsrvr.org/universal_pixel.js0.0 ms958 B
www.google-analytics.com/plugins/ua/ecommerce.js3600.0 s928 B
/collect?v=2&fmt=js&pid=429908&time=1775594476088&li_adsI...0.0 ms452 B
/idsync/ex/receive/check?partner_id=2994&partner_device_i...0.0 ms426 B
/tv2track.php?action_name=Grammarly%3A%20Free%20AI%20Writ...0.0 ms276 B
/_/ad/87aec589ac364d478f819f2ef53afe3a/pixel?tag=ViewCont...0.0 ms272 B
/tag?action=view&user_id=d8656980-7862-4277-ac8d-6a5f81a2...0.0 ms238 B
/pixel/?ad_log=referer&action=lead&pixid=52b11b79-9426-44...0.0 ms131 B
px.gumgum.com/ad/conversion?cmp=17266&num=1&rnd=10060972140.0 ms68 B
www.facebook.com/tr?id=828127113879905&ev=PageView&noscript=10.0 ms19 B
/tr/?id=828127113879905&ev=PageView&dl=https%3A%2F%2Fwww....0.0 ms16 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:Source valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]
items: [map[reflowTime:30.909 source:map[type:text value:[unattributed]]]]

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
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
value: No additional origins are good candidates for preconnecting

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
transcend-cdn.com/cm/1c1f8e90-47d0-4bba-a1a2-472d59b002a2/airgap.js53.3 KiB1.4 s

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
div.two-column_rightColumnContent__LSTZR > div.two-column_contentWithLeftSpacing__PyqyH > div.style_videoWrapper__OukO1 > video.video-player_video__8GR5s div.two-column_rightColumnContent__LSTZR > div.two-column_contentWithLeftSpacing__PyqyH > div.style_videoWrapper__OukO1 > video.video-player_video__8GR5s
/1e6ajr2k4140/6eck5Kr7gDyJifV5aNqEac/824742f305babdc38f47...39.4 KiB21.8 KiB
div.two-column_rightColumnContent__LSTZR > div.two-column_contentWithLeftSpacing__PyqyH > div.style_videoWrapper__OukO1 > video.video-player_video__8GR5s div.two-column_rightColumnContent__LSTZR > div.two-column_contentWithLeftSpacing__PyqyH > div.style_videoWrapper__OukO1 > video.video-player_video__8GR5s
/1e6ajr2k4140/4E0CGf4tAnG0BZjvU4NZVK/0eb026522ab9d5aa4b31...33.8 KiB15.2 KiB
div.two-column_rightColumnContent__LSTZR > div > div.style_videoWrapper__OukO1 > video.video-player_video__8GR5s div.two-column_rightColumnContent__LSTZR > div > div.style_videoWrapper__OukO1 > video.video-player_video__8GR5s
/1e6ajr2k4140/4hOYb9UtTVpuNkpWZDT5X0/6787ede583db2d065aa9...14.8 KiB6.7 KiB
div.two-column_rightColumnContent__LSTZR > div.two-column_contentWithLeftSpacing__PyqyH > div.style_videoWrapper__OukO1 > video.video-player_video__8GR5s div.two-column_rightColumnContent__LSTZR > div.two-column_contentWithLeftSpacing__PyqyH > div.style_videoWrapper__OukO1 > video.video-player_video__8GR5s
/1e6ajr2k4140/7Hz8pL4dH8olUY1jGwBWSa/84052d70997bad838add...12.0 KiB5.4 KiB
div.two-column_rightColumnContent__LSTZR > div.two-column_contentWithLeftSpacing__PyqyH > div.style_videoWrapper__OukO1 > video.video-player_video__8GR5s div.two-column_rightColumnContent__LSTZR > div.two-column_contentWithLeftSpacing__PyqyH > div.style_videoWrapper__OukO1 > video.video-player_video__8GR5s
/1e6ajr2k4140/4G6hnI0J9OldjOpC1qWxDL/6e9c8ed36159d0598863...11.2 KiB5.0 KiB

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

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

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.

Why this matters

Performance issues directly impact user engagement and conversion rates.

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: 460 ms 75.1 KiB
URLTransfer SizeEst Savings
static-web.grammarly.com/cms/master/_next/static/css/7b7e1910fdad8012.css35.2 KiB33.4 KiB
static-web.grammarly.com/cms/master/_next/static/css/3540ba9e956cf59a.css24.5 KiB22.3 KiB
static-web.grammarly.com/cms/master/_next/static/css/e9f86793ce73c13a.css21.5 KiB19.4 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: 460 ms 1.1 MiB
URLTransfer SizeEst Savings
static-web.grammarly.com/cms/master/_next/static/chunks/345-b3c0ea41a809d894.js486.7 KiB317.5 KiB
static-web.grammarly.com/cms/master/_next/static/chunks/151-c24adecc0ed805dc.js159.6 KiB101.2 KiB
/cms/master/_next/static/chunks/2665999f-54d41965add03933.js120.8 KiB80.9 KiB
accounts.google.com/gsi/client92.7 KiB69.5 KiB
/gtag/js?id=DC-10353179&l=dataLayerAt1333&cx=c&gtm=4e6460130.2 KiB60.1 KiB
/gtag/js?id=DC-10353176&l=dataLayerAt1333&cx=c&gtm=4e6460130.2 KiB60.1 KiB
/gtag/js?id=G-CBK9K2ZWWE&l=dataLayerAt1333&cx=c&gtm=4e6460166.7 KiB59.8 KiB
www.googletagmanager.com/gtm.js?id=GTM-NQ3XB9&l=dataLayerAt1333199.2 KiB56.7 KiB
analytics.tiktok.com/i18n/pixel/static/main.MWE0ZWQ3ZWQwMQ.js108.9 KiB55.9 KiB
/gtag/js?id=AW-956476927&l=dataLayerAt1333&cx=c&gtm=4e6460146.3 KiB54.9 KiB
/gtag/js?id=DC-11910764&l=dataLayerAt1333&cx=c&gtm=4e6460130.6 KiB53.5 KiB
transcend-cdn.com/cm/1c1f8e90-47d0-4bba-a1a2-472d59b002a2/ui.js92.7 KiB44.5 KiB
connect.facebook.net/en_US/fbevents.js94.8 KiB34.0 KiB
transcend-cdn.com/cm/1c1f8e90-47d0-4bba-a1a2-472d59b002a2/airgap.js52.9 KiB27.2 KiB
/cms/master/_next/static/chunks/framework-18871a3a7164e80...53.8 KiB24.0 KiB

Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this. Learn how to reduce Javascript execution time.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLTotal CPU TimeScript EvaluationScript Parse
www.grammarly.com/2.3 s54 ms12 ms
Unattributable2.0 s130 ms0.0 ms
www.googletagmanager.com/gtm.js?id=GTM-NQ3XB9&l=dataLayerAt1333996 ms812 ms86 ms
/cms/master/_next/static/chunks/framework-18871a3a7164e80...988 ms907 ms21 ms
/cms/master/_next/static/chunks/pages/render-b5a9ba44889e...884 ms869 ms0.5 ms
/gtag/js?id=AW-956476927&l=dataLayerAt1333&cx=c&gtm=4e6460552 ms478 ms64 ms
/gtag/js?id=DC-10353176&l=dataLayerAt1333&cx=c&gtm=4e6460549 ms404 ms68 ms
/gtag/js?id=G-CBK9K2ZWWE&l=dataLayerAt1333&cx=c&gtm=4e6460499 ms404 ms57 ms
/gtag/js?id=DC-11910764&l=dataLayerAt1333&cx=c&gtm=4e6460439 ms400 ms36 ms
/gtag/js?id=DC-10353179&l=dataLayerAt1333&cx=c&gtm=4e6460340 ms285 ms52 ms
transcend-cdn.com/cm/1c1f8e90-47d0-4bba-a1a2-472d59b002a2/ui.js315 ms250 ms34 ms
analytics.tiktok.com/i18n/pixel/static/main.MWE0ZWQ3ZWQwMQ.js288 ms237 ms47 ms
transcend-cdn.com/cm/1c1f8e90-47d0-4bba-a1a2-472d59b002a2/airgap.js275 ms232 ms41 ms
scripts.clarity.ms/0.8.59/clarity.js254 ms219 ms15 ms
static-web.grammarly.com/cms/master/_next/static/chunks/345-b3c0ea41a809d894.js188 ms3.5 ms183 ms
connect.facebook.net/en_US/fbevents.js168 ms133 ms34 ms
/signals/config/828127113879905?v=2.9.291&r=stable&domain...159 ms127 ms31 ms
cdn.taboola.com/libtrc/unip/1326138/tfa.js152 ms112 ms10 ms
utt.impactcdn.com/A6052161-35a5-43f1-815e-1b952086565a1.js147 ms133 ms5.0 ms
j.6sc.co/6si.min.js131 ms95 ms11 ms
static-web.grammarly.com/cms/master/_next/static/chunks/main-a1ca2a318bff5472.js118 ms103 ms13 ms
/cms/master/_next/static/chunks/2665999f-54d41965add03933.js98 ms45 ms52 ms
js.adsrvr.org/up_loader.1.1.0.js89 ms76 ms5.5 ms
static-web.grammarly.com/cms/master/_next/static/chunks/151-c24adecc0ed805dc.js86 ms13 ms61 ms
accounts.google.com/gsi/client85 ms56 ms27 ms
snap.licdn.com/li.lms-analytics/insight.min.js77 ms63 ms7.0 ms
/cms/master/_next/static/chunks/pages/_app-42ab6431f4f865...73 ms55 ms16 ms
bat.bing.com/bat.js71 ms65 ms4.5 ms
collector-21641.us.tvsquared.com/tv2track.js62 ms49 ms3.3 ms
/1326138/trc/3/json?tim=1775594476134&data=%7B%22id%22%3A...54 ms38 ms0.9 ms
analytics.tiktok.com/i18n/pixel/static/identify_5cff1caf.js51 ms36 ms15 ms

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 Evaluation7.3 s
Other2.6 s
Style & Layout1.1 s
Script Parsing & Compilation1.1 s
Rendering465 ms
Garbage Collection305 ms
Parse HTML & CSS183 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
Pages whose main resource has cache-control:no-store cannot enter back/forward cache.Not actionable
Back/forward cache is disabled because some JavaScript network request received resource with Cache-Control: no-store header.Not actionable

Large network payloads cost users real money and are highly correlated with long load times. Learn how to reduce payload sizes.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLTransfer Size
/1e6ajr2k4140/2TlskIv9y5c801D4JXgV2p/f238bb19018c6ddb906c...2.5 MiB
/1e6ajr2k4140/4vgbfWZIvuClR5DNeijZER/8763e227184d3e499ad8...706.6 KiB
static-web.grammarly.com/cms/master/_next/static/chunks/345-b3c0ea41a809d894.js489.7 KiB
www.googletagmanager.com/gtm.js?id=GTM-NQ3XB9&l=dataLayerAt1333199.6 KiB
static-web.grammarly.com/shared/fonts/inter-semi-bold.woff2188.1 KiB
static-web.grammarly.com/shared/fonts/inter-medium.woff2187.0 KiB
/gtag/js?id=G-CBK9K2ZWWE&l=dataLayerAt1333&cx=c&gtm=4e6460166.8 KiB
static-web.grammarly.com/cms/master/_next/static/chunks/151-c24adecc0ed805dc.js160.2 KiB
/gtag/js?id=AW-956476927&l=dataLayerAt1333&cx=c&gtm=4e6460146.4 KiB
/gtag/js?id=DC-11910764&l=dataLayerAt1333&cx=c&gtm=4e6460130.7 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
li > button.base_PbRSndwM > span.content_PbRSndwM > img.iconFirstPrivacyIcon_GBat7YpO li > button.base_PbRSndwM > span.content_PbRSndwM > img.iconFirstPrivacyIcon_GBat7YpO
a.scrollable-content_cardLinkWrapper__8Fc3t > div.scrollable-content_card___l73O > div.testimonial_statsTestimonialSection__p4P_C > img.testimonial_statsTestimonialLogo__VV_mo a.scrollable-content_cardLinkWrapper__8Fc3t > div.scrollable-content_card___l73O > div.testimonial_statsTestimonialSection__p4P_C > img.testimonial_statsTestimonialLogo__VV_mo
a.scrollable-content_cardLinkWrapper__8Fc3t > div.scrollable-content_card___l73O > div.testimonial_statsTestimonialSection__p4P_C > img.testimonial_statsTestimonialLogo__VV_mo a.scrollable-content_cardLinkWrapper__8Fc3t > div.scrollable-content_card___l73O > div.testimonial_statsTestimonialSection__p4P_C > img.testimonial_statsTestimonialLogo__VV_mo
a.scrollable-content_cardLinkWrapper__8Fc3t > div.scrollable-content_card___l73O > div.testimonial_statsTestimonialSection__p4P_C > img.testimonial_statsTestimonialLogo__VV_mo a.scrollable-content_cardLinkWrapper__8Fc3t > div.scrollable-content_card___l73O > div.testimonial_statsTestimonialSection__p4P_C > img.testimonial_statsTestimonialLogo__VV_mo
a.scrollable-content_cardLinkWrapper__8Fc3t > div.scrollable-content_card___l73O > div.testimonial_statsTestimonialSection__p4P_C > img.testimonial_statsTestimonialLogo__VV_mo a.scrollable-content_cardLinkWrapper__8Fc3t > div.scrollable-content_card___l73O > div.testimonial_statsTestimonialSection__p4P_C > img.testimonial_statsTestimonialLogo__VV_mo
a.scrollable-content_cardLinkWrapper__8Fc3t > div.scrollable-content_card___l73O > div.testimonial_statsTestimonialSection__p4P_C > img.testimonial_statsTestimonialLogo__VV_mo a.scrollable-content_cardLinkWrapper__8Fc3t > div.scrollable-content_card___l73O > div.testimonial_statsTestimonialSection__p4P_C > img.testimonial_statsTestimonialLogo__VV_mo
a.scrollable-content_cardLinkWrapper__8Fc3t > div.scrollable-content_card___l73O > div.testimonial_statsTestimonialSection__p4P_C > img.testimonial_statsTestimonialLogo__VV_mo a.scrollable-content_cardLinkWrapper__8Fc3t > div.scrollable-content_card___l73O > div.testimonial_statsTestimonialSection__p4P_C > img.testimonial_statsTestimonialLogo__VV_mo
a.scrollable-content_cardLinkWrapper__8Fc3t > div.scrollable-content_card___l73O > div.testimonial_statsTestimonialSection__p4P_C > img.testimonial_statsTestimonialLogo__VV_mo a.scrollable-content_cardLinkWrapper__8Fc3t > div.scrollable-content_card___l73O > div.testimonial_statsTestimonialSection__p4P_C > img.testimonial_statsTestimonialLogo__VV_mo

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

●Layout shift culprits
●Document request latency
●Optimize DOM size
●Font display
●LCP breakdown
●LCP request discovery
●Modern HTTP
●Optimize viewport for mobile
●Minify CSS
●Minify JavaScript
●User Timing marks and measures 26 user timings
●Avoid long main-thread tasks 20 long tasks found
●Network Requests
●Network Round Trip Times 140 ms
●Server Backend Latencies 140 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Avoid multiple page redirects
●Initial server response time was short Root document took 190 ms
○INP breakdown
○Avoid non-composited animations
○Avoid large layout shifts
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.

Contrast

Low-contrast text is difficult or impossible for many users to read. Link text that is discernible improves the experience for users with low vision. Learn how to make links distinguishable.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Terms and Conditions figcaption > div.hero_ctasDescriptionsContainer__5sqJ2 > p.cta-button_ctaDescription__NGriO > a.link-color_linkDefault__xgSfW
Terms and div.two-column_leftColumnContent__W4WP2 > div.two-column_contentWithRightSpacing__RTf7J > p.cta-button_ctaDescription__NGriO > a.link-color_linkDefault__xgSfW
Conditions div.two-column_leftColumnContent__W4WP2 > div.two-column_contentWithRightSpacing__RTf7J > p.cta-button_ctaDescription__NGriO > a.link-color_linkDefault__xgSfW
Privacy Policy div.two-column_leftColumnContent__W4WP2 > div.two-column_contentWithRightSpacing__RTf7J > p.cta-button_ctaDescription__NGriO > a.link-color_linkDefault__xgSfW
CA Notice at Collection div.two-column_leftColumnContent__W4WP2 > div.two-column_contentWithRightSpacing__RTf7J > p.cta-button_ctaDescription__NGriO > a.link-color_linkDefault__xgSfW

These are opportunities to improve the legibility of your content.

○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
●Buttons have an accessible name
●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 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
●No element has a `[tabindex]` value greater than 0
●Touch targets have sufficient size and spacing.
●`[lang]` attributes have a valid value
●Heading elements appear in a sequentially-descending order
●Document has a main landmark.
●Deprecated ARIA roles were not used
●`<video>` elements contain a `<track>` element with `[kind="captions"]`
●Identical links have the same purpose.
○`[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
○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.
○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.
○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
AttributionReporting
snap.licdn.com/li.lms-analytics/insight.min.js
Unload event listeners are deprecated and will be removed.
blob:https://www.grammarly.com/0865776d-0379-4bdf-86a7-e0bc59720eae

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
/cms/master/_next/static/chunks/pages/_app-42ab6431f4f865...
[cms.identity.googleOneTap]: ERROR : Failed to initialize Google One Tap [object Object]
accounts.google.com/gsi/client line 81, col 88
[GSI_LOGGER]: FedCM get() rejects with NetworkError: Error retrieving a token.
www.grammarly.com/
Not signed in with the identity provider.

Source maps translate minified code to the original source code. This helps developers debug in production. In addition, Lighthouse is able to provide further insights. Consider deploying source maps to take advantage of these benefits. Learn more about source maps.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL
static-web.grammarly.com/cms/master/_next/static/chunks/345-b3c0ea41a809d894.js
/cms/master/_next/static/chunks/2665999f-54d41965add03933.js
static-web.grammarly.com/cms/master/_next/static/chunks/151-c24adecc0ed805dc.js
●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
○Redirects HTTP traffic to HTTPS
○Ensure proper origin isolation with COOP
○Mitigate clickjacking with XFO or CSP
92

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.

Content Best Practices

Descriptive link text helps search engines understand your content. Learn how to make links more accessible.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Link destinationLink Text
www.grammarly.com/trustLearn more
www.grammarly.com/blog/company/introducing-new-superhuman/Learn more

Format your HTML in a way that enables crawlers to better understand your app’s content.

○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 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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