Lighthouse Desktop

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

SCORE

GRADE

FIX

REVIEW

PASS

INFO

Detailed Report

Audit breakdown by category with detailed findings.

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.

Request	Cache TTL	Transfer Size
static.snapchat.com/videos/snapchat-dot-com/lens.mp4	0.0 ms	1.0 MiB
static.snapchat.com/videos/snapchat-dot-com/posters/lens.png	0.0 ms	471.8 KiB
static.snapchat.com/videos/snapchat-dot-com/find-your-friends.mp4	0.0 ms	375.4 KiB
static.snapchat.com/videos/snapchat-dot-com/posters/map.png	0.0 ms	365.0 KiB
static.snapchat.com/videos/snapchat-dot-com/posters/find-your-friends.png	0.0 ms	294.3 KiB
static.snapchat.com/videos/snapchat-dot-com/posters/spotlight.png	0.0 ms	278.3 KiB
static.snapchat.com/fonts/Graphik-Regular.woff2	0.0 ms	36.1 KiB
www.google-analytics.com/analytics.js	7200.0 s	20.9 KiB

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:0.961 source:map[column:197 line:846 type:source-location url:https://www.googletagmanager.com/gtag/js?id=G-DPDHJB4310 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:35.967 source:map[type:text value:[unattributed]]] map[reflowTime:0.961 source:map[column:376 line:808 type:source-location url:https://www.googletagmanager.com/gtag/js?id=G-DPDHJB4310 urlProvider:network]]]

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.

	URL	Resource Size	Est Savings
div.HomepageContent_videoSlidesContainer__RYMzP > div.VideoSlides_videoSlide__F3y7i > div.VideoSlides_videoWrapper__FY7c_ > video.VideoSlides_videoSlideVideo__66B_g `div.HomepageContent_videoSlidesContainer__RYMzP > div.VideoSlides_videoSlide__F3y7i > div.VideoSlides_videoWrapper__FY7c_ > video.VideoSlides_videoSlideVideo__66B_g`	static.snapchat.com/videos/snapchat-dot-com/posters/map.png	364.6 KiB	325.0 KiB
div.HomepageContent_videoSlidesContainer__RYMzP > div.VideoSlides_videoSlide__F3y7i > div.VideoSlides_videoWrapper__FY7c_ > video.VideoSlides_videoSlideVideo__66B_g `div.HomepageContent_videoSlidesContainer__RYMzP > div.VideoSlides_videoSlide__F3y7i > div.VideoSlides_videoWrapper__FY7c_ > video.VideoSlides_videoSlideVideo__66B_g`	static.snapchat.com/videos/snapchat-dot-com/posters/spotlight.png	277.9 KiB	238.4 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: 40 ms 23.3 KiB

URL	Transfer Size	Est Savings
static.snapchat.com/snapchat-dot-com/_next/static/css/653091ed5f536dac.css	26.0 KiB	23.3 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: 7.2 s 8.8 MiB

URL	Transfer Size	Est Savings
/snapchat-dot-com/_next/static/chunks/pages/_app-0ad9e43c...	11.4 MiB	8.6 MiB
www.googletagmanager.com/gtag/js?id=G-DPDHJB4310	168.2 KiB	113.1 KiB
www.googletagmanager.com/gtag/js?id=G-DPDHJB4310	168.2 KiB	66.2 KiB
/snapchat-dot-com/_next/static/chunks/main-2324219b5dd34d...	50.0 KiB	26.4 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.

URL	Total CPU Time	Script Evaluation	Script Parse
/snapchat-dot-com/_next/static/chunks/pages/_app-0ad9e43c...	810 ms	399 ms	392 ms
/snapchat-dot-com/_next/static/chunks/framework-41b02394b...	617 ms	582 ms	4.7 ms
Unattributable	336 ms	59 ms	0.0 ms
www.googletagmanager.com/gtag/js?id=G-DPDHJB4310	204 ms	106 ms	95 ms
www.snapchat.com/	138 ms	3.0 ms	0.2 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.

Category	Time Spent
Script Evaluation	1.2 s
Script Parsing & Compilation	519 ms
Other	329 ms
Style & Layout	90 ms
Garbage Collection	53 ms
Rendering	14 ms
Parse HTML & CSS	6.5 ms

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.

URL	Transfer Size
/snapchat-dot-com/_next/static/chunks/pages/_app-0ad9e43c...	11.7 MiB
static.snapchat.com/videos/snapchat-dot-com/lens.mp4	1.0 MiB
static.snapchat.com/videos/snapchat-dot-com/posters/lens.png	471.8 KiB
static.snapchat.com/videos/snapchat-dot-com/find-your-friends.mp4	375.4 KiB
static.snapchat.com/videos/snapchat-dot-com/posters/map.png	365.0 KiB
static.snapchat.com/videos/snapchat-dot-com/posters/find-your-friends.png	294.3 KiB
static.snapchat.com/snapchat-dot-com/_next/static/media/kameleon.077113e1.wasm	281.2 KiB
static.snapchat.com/videos/snapchat-dot-com/posters/spotlight.png	278.3 KiB
www.googletagmanager.com/gtag/js?id=G-DPDHJB4310	168.5 KiB
static.snapchat.com/fonts/AvenirNext-Bold.woff2	63.3 KiB

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

●Network dependency tree

●Render blocking requests

●Optimize viewport for mobile

●Minify CSS

●Minify JavaScript

●User Timing marks and measures 13 user timings

●Avoid long main-thread tasks 5 long tasks found

●Image elements have explicit `width` and `height`

●Page didn't prevent back/forward cache restoration

●Network Requests

●Network Round Trip Times 60 ms

●Server Backend Latencies 340 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 10 ms

●Avoid large layout shifts 4 layout shifts found

○INP breakdown

○Avoid non-composited animations

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. Learn how to provide sufficient color contrast.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Use phone number instead `form > div.SignInForm_formContent__2x1RV > div.SignInForm_inputContainer__QAuB5 > button.SignInForm_switchAiTypeBtn__Chhpb`
Log in `form > div.SignInForm_formContent__2x1RV > span.SignInForm_submitBtnWrapper__gLdkP > button.ColoredButton_blueButton__IeoF4`

These are opportunities to improve the legibility of your content.

Navigation

Properly ordered headings that do not skip levels convey the semantic structure of the page, making it easier to navigate and understand when using assistive technologies. Learn more about heading order.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Are you a parent? Learn what we're doing to help keep `div.Footer_footerContainer__4A7_0 > div.Footer_baseDesktop__lc4R9 > div.CTAFooter_desktopContentWrapper__xwJXr > h6.Heading_h600__IqY8L`

These are opportunities to improve keyboard navigation in your application.

Best practices

Disabling zooming is problematic for users with low vision who rely on screen magnification to properly see the contents of a web page. Learn more about the viewport meta tag.

Why this matters

Informational: a Permissions-Policy directive showing feature -> allowed origins.

Source: MDN Permissions-Policy

Failing Elements
head > meta `head > meta`

Touch targets with sufficient size and spacing help users who may have difficulty targeting small controls to activate the targets. Learn more about touch targets.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Snap Inc. `div#footerContainer > div.footer-column > div > a`
Careers `div#footerContainer > div.footer-column > div > a`
Advertising Policies `div#footerContainer > div.footer-column > div > a`
Political Ads Library `div#footerContainer > div.footer-column > div > a`
Brand Guidelines `div#footerContainer > div.footer-column > div > a`
Promotions Rules `div#footerContainer > div.footer-column > div > a`

These items highlight common accessibility best practices.

Names and labels

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
العَرَبِية বাংলা(বাংলাদেশ) বাংলা (ভারত) Dansk Deutsch Ελληνικά English (UK) English (US) Espa… `div#footerContainer > div.langue-selection-block > div > select#sc-global-locale-selector`

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.

Visible text labels that do not match the accessible name can result in a confusing experience for screen reader users. Learn more about accessible names.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Stories `nav > ul.ConsumerNav_linkList__pLNuJ > li.ConsumerNav_item__kOUD6 > a.ConsumerNavItem_link__Zj9e6`
Spotlight `nav > ul.ConsumerNav_linkList__pLNuJ > li.ConsumerNav_item__kOUD6 > a.ConsumerNavItem_link__Zj9e6`
Chat `nav > ul.ConsumerNav_linkList__pLNuJ > li.ConsumerNav_item__kOUD6 > a.ConsumerNavItem_link__Zj9e6`
Lenses `nav > ul.ConsumerNav_linkList__pLNuJ > li.ConsumerNav_item__kOUD6 > a.ConsumerNavItem_link__Zj9e6`
Snapchat+ `nav > ul.ConsumerNav_linkList__pLNuJ > li.ConsumerNav_item__kOUD6 > a.ConsumerNavItem_link__Zj9e6`

○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

●Form elements have associated labels

●ARIA attributes are used as specified for the element's role

●Elements use only permitted ARIA attributes

●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

●Document has a main landmark.

●Deprecated ARIA roles were not used

●`<video>` elements contain a `<track>` element with `[kind="captions"]`

○`[accesskey]` values are unique

○`button`, `link`, and `menuitem` elements have accessible names

○Elements with `role="dialog"` or `role="alertdialog"` have accessible names.

○`[aria-hidden="true"]` elements do not contain focusable descendents

○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.

○Image elements have `[alt]` attributes

○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

○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.

○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.

Best Practices

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.

Source	Description
www.snapchat.com/	Access to fetch at 'https://accounts.google.com/o/oauth2/v2/auth?client_id=680798221484-ttml4pots4g45halm91eu3bok9a9nnu5.apps.googleusercontent.com&response_type=code&scope=openid+email&redirect_uri=https://iap.googleapis.com/v1/oauth/clientIds/680798221484-ttml4pots4g45halm91eu3bok9a9nnu5.apps.googleusercontent.com:handleRedirect&code_challenge=n0-5VgyAkBs5RQoayu69asZPDz1jRGuQFkSFszCnvtM&code_challenge_method=S256&cred_ref=true&state=AUKY-CwEkgh9VM6XzAmPeFoJnqy4tkn3h5w8MD7irygEmCiWoo2-rgMs5-yU8nFqQ1hPU13wC3yd80AVNx7XVSDmSMzgBHSfv8FNUAlwQgChUCGfribiE-cv9scI2pLq3IxflUenhU7lbdUlvcWLmWWEUI7MT-67MPiMUMXV5lew3KHqU5t5Mvpa1P1zH1A1w9rpe8_ySaVrUj8vmlIZi6jCsk5PbuSqv5IhaKuzI7cWxB0k1aGD4znlgKspwd4eS9z9sdy0pEXEj6JACnaQf4TUa5Xw0a51BY4_dDN_Il99rf7Gq4EHAdiGsk2C-7h1uvTQiPeA95sTKarCcBDHIcqF84k8IZrZ0SHUC72TUJfH3lgiByalqrEBkSpa95JC16iQ_9oLWz-ba5wIQEOeir7T2TgdYoY40q0EHgGcVXJMNisteva8kUlFv3m9_gwlaXav17uAzxP1OnqPcriOW4YT3AxnQkZu_Ba90tXZICtGp3xRKjkzTgC_n5rsy0dB4IELPyE5YWvBPz-0rh_ehvnr0FBnZaPGiL06Ck71tBUjqm30fPazB1iNkx2Fd1gbyRu5ykj-dsnoupdEpgs2rmoHJxCk83cFa-07IvdU49O6SlO1WNThxZCWmZNt_mY2pPUeyTsRL_a5IcaLM43UlLThiOKAd_47anURWkkXcBSbQgmh5GoZguVYKIJgpw917X1LIIxObN_2lYewwI0kye6OMDKXCLsvXMRPVCOk07s7HS7eMM66Pkon4XhrzQtMQ9okEWLXa7Sgtodo_W5JIEANj6gexdDws39pPtQTIerhgeYrKbOWuzHr2i5L2YT3YbHUBzWhWFRk0YzfJWi0jNol7HJDz-9vf0Sm2yLlrASy7e8Qd1ssLGUSwCSUAOP6B_Ja4-fMqgjRVpt0t8LbWxCN5n-EVMhOT1eKXcYWZj3B7addMIrXmzrdzUr9maAW7ZDg9ABJKB5qX6PJjgjBtMjCqysSqf0Vmg8IPg_bXmIIlA83R7l3_2KKEsflN6a4cbKmCQ0aIw55fmTPF_610foMB-BUQbNnfMI3hWVYLi4g_4J3zgx3LAJFymLTFjzCwyvuFGuphdphk7MCZCFmgUgfgWYUqDbHgKORF9s87K1omvG3tJjMUCzWCrl3kAhUN0VKWw3EPbqilqwmHEPZBX8FHwjr9D4qfshtqAVK690KcvcKkCSh5tPBeCsuc5dEevyUJKOiqSlGhG8cxRd6MG0SC03GT9OettvqeK6NVcgTTx3Ei9Ye5f2s9sK-Carx2l_iAyPg_gaJWO491binOCPPfuYDxLNWBHB1bQOKE6YgCP5-einyDI38s81ewwQCt-bUjo35Q4wST-Uv9SPWmxlREKOfmQCZzbgzA9YZUtqO-AFTxhM_pMSLoi6qzCK4hVwDmhDq3ad0Qj-pel-AHEN0B45rcAVSioRioNu5qbdP' (redirected from 'https://growth-web-dev-tool.mesh.sc-corp.net/api/open-sesame') from origin 'https://www.snapchat.com' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.
/o/oauth2/v2/auth?client_id=680798221484-ttml4pots4g45hal...	`Failed to load resource: net::ERR_FAILED`
/v3/signin/identifier?opparams=%253Fcred_ref%253Dtrue&dsh...	`Failed to load resource: the server responded with a status of 403 ()`

Issues logged to the `Issues` panel in Chrome Devtools indicate unresolved problems. They can come from network request failures, insufficient security controls, and other browser concerns. Open up the Issues panel in Chrome DevTools for more details on each issue.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Issue type
Content security policy

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	Map URL
static.snapchat.com/snapchat-dot-com/_next/static/media/kameleon.077113e1.wasm
static.snapchat.com/snapchat-dot-com/_next/static/media/kameleon.077113e1.wasm
static.snapchat.com/snapchat-dot-com/_next/static/media/kameleon.077113e1.wasm
static.snapchat.com/snapchat-dot-com/_next/static/media/kameleon.077113e1.wasm
static.snapchat.com/snapchat-dot-com/_next/static/media/kameleon.077113e1.wasm
/snapchat-dot-com/_next/static/chunks/pages/_app-0ad9e43c...	/snapchat-dot-com/_next/static/chunks/pages/_app-0ad9e43c...
/snapchat-dot-com/_next/static/chunks/webpack-da1cb1501e6...	/snapchat-dot-com/_next/static/chunks/webpack-da1cb1501e6...
/snapchat-dot-com/_next/static/chunks/pages/index-4d8c485...	/snapchat-dot-com/_next/static/chunks/pages/index-4d8c485...
/snapchat-dot-com/_next/static/chunks/main-2324219b5dd34d...	/snapchat-dot-com/_next/static/chunks/main-2324219b5dd34d...
/snapchat-dot-com/_next/static/chunks/framework-41b02394b...	/snapchat-dot-com/_next/static/chunks/framework-41b02394b...
/snapchat-dot-com/_next/static/chunks/6018-a929ed8e961680...	/snapchat-dot-com/_next/static/chunks/6018-a929ed8e961680...
/snapchat-dot-com/_next/static/chunks/1540-20a56721f07d4e...	/snapchat-dot-com/_next/static/chunks/1540-20a56721f07d4e...

●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

●Displays images with correct aspect ratio

●Serves images with appropriate resolution

●Page has the HTML doctype

●Properly defines charset

●Ensure CSP is effective against XSS attacks

●Use a strong HSTS policy

●Ensure proper origin isolation with COOP

●Mitigate DOM-based XSS with Trusted Types

●Detected JavaScript libraries

○Redirects HTTP traffic to HTTPS

○Mitigate clickjacking with XFO or CSP

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 destination	Link Text
www.snapchat.com/download/	here

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

●Document has a valid `hreflang`

●Document has a valid `rel=canonical`

○Image elements have `[alt]` attributes