Skip to content
https://geeksforgeeks.org

Lighthouse Desktop

· 0 checks — Desktop Lighthouse audit -- Performance, Accessibility, Best Practices, and SEO category breakdown.
SCORE
0
GRADE
FIX
0
REVIEW
0
PASS
0
INFO
0

Detailed Report

Audit breakdown by category with detailed findings.

88

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.

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.

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
course-img div.HomePageCoursesContainer_homePageCoursesContainer__gCbAe > div.HomePageCoursesContainer_homePageCoursesContainer_cardsContainer__XLFxQ > a.HomePageCourseCard_homePageCourseCard__1Z34I > img.HomePageCourseCard_homePageCourseCard_image__au041
media.geeksforgeeks.org/wp-content/uploads/20251119100432783088/JBDL1.webp13.3 KiB11.2 KiB
course-img div.HomePageCoursesContainer_homePageCoursesContainer__gCbAe > div.HomePageCoursesContainer_homePageCoursesContainer_cardsContainer__XLFxQ > a.HomePageCourseCard_homePageCourseCard__1Z34I > img.HomePageCourseCard_homePageCourseCard_image__au041
/img-practice/prod/courses/270/Web/Content/CourseJavaProg...11.4 KiB10.1 KiB
course-img div.HomePageCoursesContainer_homePageCoursesContainer__gCbAe > div.HomePageCoursesContainer_homePageCoursesContainer_cardsContainer__XLFxQ > a.HomePageCourseCard_homePageCourseCard__1Z34I > img.HomePageCourseCard_homePageCourseCard_image__au041
/img-practice/prod/courses/221/Web/Content/cpp_1723009538...10.0 KiB8.9 KiB
course-img div.HomePageCoursesContainer_homePageCoursesContainer__gCbAe > div.HomePageCoursesContainer_homePageCoursesContainer_cardsContainer__XLFxQ > a.HomePageCourseCard_homePageCourseCard__1Z34I > img.HomePageCourseCard_homePageCourseCard_image__au041
/wp-content/uploads/20251010124253058806/generative-ai-tr...10.5 KiB8.9 KiB
course-img div.HomePageCoursesContainer_homePageCoursesContainer__gCbAe > div.HomePageCoursesContainer_homePageCoursesContainer_cardsContainer__XLFxQ > a.HomePageCourseCard_homePageCourseCard__1Z34I > img.HomePageCourseCard_homePageCourseCard_image__au041
/wp-content/uploads/20260109134146052260/devops_engineeri...9.9 KiB8.4 KiB
course-img div.HomePageCoursesContainer_homePageCoursesContainer__gCbAe > div.HomePageCoursesContainer_homePageCoursesContainer_cardsContainer__XLFxQ > a.HomePageCourseCard_homePageCourseCard__1Z34I > img.HomePageCourseCard_homePageCourseCard_image__au041
/wp-content/uploads/20250929101624249259/tech_interview.webp8.8 KiB7.4 KiB

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

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
/a?v=3&t=l&pid=2114597550&rv=64e1&tag_exp=0~115938466~115...0.0 ms11 B

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

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: 110 ms 28.4 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.

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
course-img div.HomePageCoursesContainer_homePageCoursesContainer__gCbAe > div.HomePageCoursesContainer_homePageCoursesContainer_cardsContainer__XLFxQ > a.HomePageCourseCard_homePageCourseCard__1Z34I > img.HomePageCourseCard_homePageCourseCard_image__au041
/img-practice/prod/courses/221/Web/Content/cpp_1723009538...
course-img div.HomePageCoursesContainer_homePageCoursesContainer__gCbAe > div.HomePageCoursesContainer_homePageCoursesContainer_cardsContainer__XLFxQ > a.HomePageCourseCard_homePageCourseCard__1Z34I > img.HomePageCourseCard_homePageCourseCard_image__au041
/img-practice/prod/courses/270/Web/Content/CourseJavaProg...
course-img div.HomePageCoursesContainer_homePageCoursesContainer__gCbAe > div.HomePageCoursesContainer_homePageCoursesContainer_cardsContainer__XLFxQ > a.HomePageCourseCard_homePageCourseCard__1Z34I > img.HomePageCourseCard_homePageCourseCard_image__au041
/wp-content/uploads/20250929101624249259/tech_interview.webp
course-img div.HomePageCoursesContainer_homePageCoursesContainer__gCbAe > div.HomePageCoursesContainer_homePageCoursesContainer_cardsContainer__XLFxQ > a.HomePageCourseCard_homePageCourseCard__1Z34I > img.HomePageCourseCard_homePageCourseCard_image__au041
media.geeksforgeeks.org/wp-content/uploads/20251119100432783088/JBDL1.webp
course-img div.HomePageCoursesContainer_homePageCoursesContainer__gCbAe > div.HomePageCoursesContainer_homePageCoursesContainer_cardsContainer__XLFxQ > a.HomePageCourseCard_homePageCourseCard__1Z34I > img.HomePageCourseCard_homePageCourseCard_image__au041
/wp-content/uploads/20251010124253058806/generative-ai-tr...
course-img div.HomePageCoursesContainer_homePageCoursesContainer__gCbAe > div.HomePageCoursesContainer_homePageCoursesContainer_cardsContainer__XLFxQ > a.HomePageCourseCard_homePageCourseCard__1Z34I > img.HomePageCourseCard_homePageCourseCard_image__au041
/wp-content/uploads/20260109134146052260/devops_engineeri...
GFG App on App Store div.footer-container_social-app-row > div.footer-container_branding-app > a > img#appstore
media.geeksforgeeks.org/auth-dashboard-uploads/appstore-%281%29.png
GFG App on Play Store div.footer-container_social-app-row > div.footer-container_branding-app > a > img#gplay
media.geeksforgeeks.org/auth-dashboard-uploads/googleplay-%281%29.png
location div.footer-container_left > div.footer-container_address_box > div.footer-container_branding-address > img
media.geeksforgeeks.org/img-practice/Location-1685004904.svg
location div.footer-container_left > div.footer-container_address_box > div.footer-container_branding-address > img
media.geeksforgeeks.org/img-practice/Location-1685004904.svg

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

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: 248 ms
●Time to Interactive 2.1 s
●Max Potential First Input Delay 70 ms
●Layout shift culprits
●Optimize DOM size
●Font display
●Forced reflow
●LCP breakdown
●Modern HTTP
●Render blocking requests
●Optimize viewport for mobile
●Minify CSS
●Minify JavaScript
●Avoids enormous network payloads Total size was 1,215 KiB
●User Timing marks and measures 233 user timings
●JavaScript execution time 0.2 s
●Minimizes main-thread work 0.6 s
●Avoid long main-thread tasks 2 long tasks found
●Page didn't prevent back/forward cache restoration
●Network Requests
●Network Round Trip Times 30 ms
●Server Backend Latencies 60 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Initial server response time was short Root document took 30 ms
○INP breakdown
○LCP request discovery
○Avoid non-composited animations
○Avoid large layout shifts
92

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
DSA Online div.index_homePageContainer__H8GJD > div.HomePageSearchContainer_homePageSearchContainer__bNc8c > div.SearchContainerChips_searchContainerChips__PnpvD > a.SearchChip_searchChip__oKfVN
Beginner to Advanced a.HomePageCourseCard_homePageCourseCard__1Z34I > div.HomePageCourseCard_homePageCourseCard_textContainer___928L > div.HomePageCourseCard_homePageCourseCard_textContainer_level__2nbvZ > span.HomePageCourseCard_homePageCourseCard_textContainer_level--text__gdzdr
418k+ interested Geeks div.HomePageCourseCard_homePageCourseCard_textContainer___928L > div.HomePageCourseCard_homePageCourseCard_textContainer_container__gOEY1 > div.HomePageCourseCard_homePageCourseCard_textContainer_container_geeksCount__qOvOm > span.HomePageCourseCard_homePageCourseCard_textContainer_container_geeksCount--text__LCcz_
Intermediate and Advanced a.HomePageCourseCard_homePageCourseCard__1Z34I > div.HomePageCourseCard_homePageCourseCard_textContainer___928L > div.HomePageCourseCard_homePageCourseCard_textContainer_level__2nbvZ > span.HomePageCourseCard_homePageCourseCard_textContainer_level--text__gdzdr
413k+ interested Geeks div.HomePageCourseCard_homePageCourseCard_textContainer___928L > div.HomePageCourseCard_homePageCourseCard_textContainer_container__gOEY1 > div.HomePageCourseCard_homePageCourseCard_textContainer_container_geeksCount__qOvOm > span.HomePageCourseCard_homePageCourseCard_textContainer_container_geeksCount--text__LCcz_
Beginner to Advanced a.HomePageCourseCard_homePageCourseCard__1Z34I > div.HomePageCourseCard_homePageCourseCard_textContainer___928L > div.HomePageCourseCard_homePageCourseCard_textContainer_level__2nbvZ > span.HomePageCourseCard_homePageCourseCard_textContainer_level--text__gdzdr
54k+ interested Geeks div.HomePageCourseCard_homePageCourseCard_textContainer___928L > div.HomePageCourseCard_homePageCourseCard_textContainer_container__gOEY1 > div.HomePageCourseCard_homePageCourseCard_textContainer_container_geeksCount__qOvOm > span.HomePageCourseCard_homePageCourseCard_textContainer_container_geeksCount--text__LCcz_
Beginner to Advanced a.HomePageCourseCard_homePageCourseCard__1Z34I > div.HomePageCourseCard_homePageCourseCard_textContainer___928L > div.HomePageCourseCard_homePageCourseCard_textContainer_level__2nbvZ > span.HomePageCourseCard_homePageCourseCard_textContainer_level--text__gdzdr
165k+ interested Geeks div.HomePageCourseCard_homePageCourseCard_textContainer___928L > div.HomePageCourseCard_homePageCourseCard_textContainer_container__gOEY1 > div.HomePageCourseCard_homePageCourseCard_textContainer_container_geeksCount__qOvOm > span.HomePageCourseCard_homePageCourseCard_textContainer_container_geeksCount--text__LCcz_
Beginner to Advanced a.HomePageCourseCard_homePageCourseCard__1Z34I > div.HomePageCourseCard_homePageCourseCard_textContainer___928L > div.HomePageCourseCard_homePageCourseCard_textContainer_level__2nbvZ > span.HomePageCourseCard_homePageCourseCard_textContainer_level--text__gdzdr
320k+ interested Geeks div.HomePageCourseCard_homePageCourseCard_textContainer___928L > div.HomePageCourseCard_homePageCourseCard_textContainer_container__gOEY1 > div.HomePageCourseCard_homePageCourseCard_textContainer_container_geeksCount__qOvOm > span.HomePageCourseCard_homePageCourseCard_textContainer_container_geeksCount--text__LCcz_
Beginner to Advanced a.HomePageCourseCard_homePageCourseCard__1Z34I > div.HomePageCourseCard_homePageCourseCard_textContainer___928L > div.HomePageCourseCard_homePageCourseCard_textContainer_level__2nbvZ > span.HomePageCourseCard_homePageCourseCard_textContainer_level--text__gdzdr
430k+ interested Geeks div.HomePageCourseCard_homePageCourseCard_textContainer___928L > div.HomePageCourseCard_homePageCourseCard_textContainer_container__gOEY1 > div.HomePageCourseCard_homePageCourseCard_textContainer_container_geeksCount__qOvOm > span.HomePageCourseCard_homePageCourseCard_textContainer_container_geeksCount--text__LCcz_
Trending Now div.HomePageTopicsContainer_homePageTopicsContainer__G7Ad5 > div.HomePageTopicsContainer_homePageTopicsContainer_cardsContainer__rNWDY > a.HomePageTopicCard_homePageTopicCard__eePhS > span
Watch Videos div.HomePageTopicsContainer_homePageTopicsContainer__G7Ad5 > div.HomePageTopicsContainer_homePageTopicsContainer_cardsContainer__rNWDY > a.HomePageTopicCard_homePageTopicCard__eePhS > span
GfG Coding Contest div.HomePageTopicsContainer_homePageTopicsContainer__G7Ad5 > div.HomePageTopicsContainer_homePageTopicsContainer_cardsContainer__rNWDY > a.HomePageTopicCard_homePageTopicCard__eePhS > span
Advertise with Us div.HomePageTopicsContainer_homePageTopicsContainer__G7Ad5 > div.HomePageTopicsContainer_homePageTopicsContainer_cardsContainer__rNWDY > a.HomePageTopicCard_homePageTopicCard__eePhS > span
Company div.footer-container > div.footer-container_right > ul.footer-container_links-list > li.footer-container_links_list-title
Explore div.footer-container > div.footer-container_right > ul.footer-container_links-list > li.footer-container_links_list-title
Tutorials div.footer-container > div.footer-container_right > ul.footer-container_links-list > li.footer-container_links_list-title
Courses div.footer-container > div.footer-container_right > ul.footer-container_links-list > li.footer-container_links_list-title
Videos div.footer-container > div.footer-container_right > ul.footer-container_links-list > li.footer-container_links_list-title
Preparation Corner div.footer-container > div.footer-container_right > ul.footer-container_links-list > li.footer-container_links_list-title

These are opportunities to improve the legibility of your content.

Best practices

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
About Us div.footer-container_right > ul.footer-container_links-list > li.footer-container_links_list-items > a
Legal div.footer-container_right > ul.footer-container_links-list > li.footer-container_links_list-items > a
Privacy Policy div.footer-container_right > ul.footer-container_links-list > li.footer-container_links_list-items > a
Contact Us div.footer-container_right > ul.footer-container_links-list > li.footer-container_links_list-items > a
Advertise with us div.footer-container_right > ul.footer-container_links-list > li.footer-container_links_list-items > a
POTD div.footer-container_right > ul.footer-container_links-list > li.footer-container_links_list-items > a
Job-A-Thon div.footer-container_right > ul.footer-container_links-list > li.footer-container_links_list-items > a
Blogs div.footer-container_right > ul.footer-container_links-list > li.footer-container_links_list-items > a
DSA div.footer-container_right > ul.footer-container_links-list > li.footer-container_links_list-items > a
Web Technology div.footer-container_right > ul.footer-container_links-list > li.footer-container_links_list-items > a
DevOps div.footer-container_right > ul.footer-container_links-list > li.footer-container_links_list-items > a
CS Core Subjects div.footer-container_right > ul.footer-container_links-list > li.footer-container_links_list-items > a
Interview Preparation div.footer-container_right > ul.footer-container_links-list > li.footer-container_links_list-items > a
Software and Tools div.footer-container_right > ul.footer-container_links-list > li.footer-container_links_list-items > a
ML and Data Science div.footer-container_right > ul.footer-container_links-list > li.footer-container_links_list-items > a
DSA and Placements div.footer-container_right > ul.footer-container_links-list > li.footer-container_links_list-items > a
Web Development div.footer-container_right > ul.footer-container_links-list > li.footer-container_links_list-items > a
DevOps & Cloud div.footer-container_right > ul.footer-container_links-list > li.footer-container_links_list-items > a
GATE div.footer-container_right > ul.footer-container_links-list > li.footer-container_links_list-items > a
DSA div.footer-container_right > ul.footer-container_links-list > li.footer-container_links_list-items > a
Python div.footer-container_right > ul.footer-container_links-list > li.footer-container_links_list-items > a
Java div.footer-container_right > ul.footer-container_links-list > li.footer-container_links_list-items > a
C++ div.footer-container_right > ul.footer-container_links-list > li.footer-container_links_list-items > a
Web Development div.footer-container_right > ul.footer-container_links-list > li.footer-container_links_list-items > a
Data Science div.footer-container_right > ul.footer-container_links-list > li.footer-container_links_list-items > a
CS Subjects div.footer-container_right > ul.footer-container_links-list > li.footer-container_links_list-items > a
Interview Corner div.footer-container_right > ul.footer-container_links-list > li.footer-container_links_list-items > a
Aptitude div.footer-container_right > ul.footer-container_links-list > li.footer-container_links_list-items > a
Puzzles div.footer-container_right > ul.footer-container_links-list > li.footer-container_links_list-items > a
GfG 160 div.footer-container_right > ul.footer-container_links-list > li.footer-container_links_list-items > a
System Design div.footer-container_right > ul.footer-container_links-list > li.footer-container_links_list-items > a

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
●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
●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 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
●Heading elements appear in a sequentially-descending order
●Document has a main landmark.
●Deprecated ARIA roles were not used
●Identical links have the same purpose.
●Elements with visible text labels have matching accessible names.
○`[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.
○Input buttons have discernible text.
○`<input type="image">` elements have `[alt]` text
○Links are distinguishable without relying on color.
○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.
○Uses ARIA roles only on compatible elements
○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.
100

Best Practices

General

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.

●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
●No browser errors logged to the console
●No issues in the `Issues` panel in Chrome Devtools
●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
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`

Send Feedback