Lighthouse Mobile

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

SCORE

GRADE

FIX

REVIEW

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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
resources.jetbrains.com/storage/optly/26613100737.js	600.0 s	130.8 KiB
/storage/jetbrains-mono/v2.304/webfonts/JetBrainsMono-Bol...	600.0 s	92.9 KiB
/storage/jetbrains-sans/google-fonts/v1.309/variable/JetB...	600.0 s	59.2 KiB
cdn.cookiehub.eu/c2/0acea1b9.js	86400.0 s	38.8 KiB
cdn.cookiehub.eu/c2/css/0acea1b9.css	86400.0 s	13.1 KiB

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Est Savings
/storage/jetbrains-sans/google-fonts/v1.309/variable/JetB...	35 ms
/storage/jetbrains-mono/v2.304/webfonts/JetBrainsMono-Bol...	25 ms

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:56.436 source:map[column:114129 line:2 type:source-location url:https://www.jetbrains.com/_assets/common.578dd59ae3f4b25d9603.js 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:42.959 source:map[column:337189 line:1 type:source-location url:https://www.jetbrains.com/_assets/common.578dd59ae3f4b25d9603.js urlProvider:network]] map[reflowTime:13.477 source:map[column:291221 line:1 type:source-location url:https://www.jetbrains.com/_assets/common.578dd59ae3f4b25d9603.js urlProvider:network]] map[reflowTime:37.639 source:map[column:52928 line:61 type:source-location url:https://cdn.cookiehub.eu/c2/0acea1b9.js 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.value-card > div._wrapper_77npfm_3 > div.value-card__img > img `div.value-card > div._wrapper_77npfm_3 > div.value-card__img > img`	www.jetbrains.com/img/home-page/screenshots/rider.gif	3.4 MiB	3.4 MiB
Rider `div.wt-container > div.wt-row > div.wt-col > img.ides-b2b-hero-section__image`	www.jetbrains.com/img/home-page/rider-main-window.png	241.7 KiB	230.4 KiB
PyCharm `div.wt-container > div.wt-row > div.wt-col > img.ides-b2b-hero-section__image`	www.jetbrains.com/img/home-page/pycharm-main-window.png	241.2 KiB	229.8 KiB
WebStorm `div.wt-container > div.wt-row > div.wt-col > img.ides-b2b-hero-section__image`	www.jetbrains.com/img/home-page/webstorm-main-window.png	234.9 KiB	223.8 KiB
IntelliJ IDEA `div.wt-container > div.wt-row > div.wt-col > img.ides-b2b-hero-section__image`	www.jetbrains.com/img/home-page/idea-main-window.png	234.1 KiB	223.1 KiB
Run AI agents side by side in one unified workflow Download for macOS Learn m… `main#main-page > section.wt-section > div.wt-container > div.main-air-banner`	/_assets/www/part/banner-section/air-banner/air-banner-ba...	351.3 KiB	60.5 KiB
a._clickable_17150hd_111 > div.wt-row > div.wt-col > img.wt-display-none `a._clickable_17150hd_111 > div.wt-row > div.wt-col > img.wt-display-none`	www.jetbrains.com/img/home-page/teamcity-pipe.png	42.0 KiB	33.5 KiB
scala `div.cmn-ui-marquee > div.cmn-ui-marquee__group > div.main-languages-item > img.main-languages-item__logo`	www.jetbrains.com/img/logos/languages/logo-scala.png	5.5 KiB	5.4 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.

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

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.

URL	Transfer Size	Duration
www.jetbrains.com/_assets/common.578dd59ae3f4b25d9603.js	1.4 MiB	7.8 s
resources.jetbrains.com/storage/optly/26613100737.js	130.8 KiB	2.1 s
www.jetbrains.com/_assets/banner-rotator.entry.12fe97407ac1e351ee5c.js	26.9 KiB	166 ms
www.jetbrains.com/_assets/index.entry.d31a7d149928a0ce6198.js	53.5 KiB	166 ms
www.jetbrains.com/_assets/index.entry.6aa9364c2c2885822d6a.css	4.5 KiB	166 ms
www.jetbrains.com/_assets/default-page.73f2ab31a743063a654e.js	87.7 KiB	499 ms
www.jetbrains.com/_assets/default-page.5e196666c65378bf4eb9.css	30.9 KiB	333 ms
www.jetbrains.com/_assets/banner-rotator.entry.3ef68c5b3cd7cb372be2.css	3.8 KiB
www.jetbrains.com/_assets/common.741accfab50732da372d.css	102.4 KiB	1.2 s

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

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: 800 ms

URL	Time Spent
jetbrains.com/	800 ms
www.jetbrains.com/	0.0 ms

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: 900 ms 133.7 KiB

URL	Transfer Size	Est Savings
www.jetbrains.com/_assets/common.741accfab50732da372d.css	101.9 KiB	93.9 KiB
www.jetbrains.com/_assets/default-page.5e196666c65378bf4eb9.css	30.5 KiB	29.2 KiB
cdn.cookiehub.eu/c2/css/0acea1b9.css	12.2 KiB	10.5 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: 5.0 s 954.2 KiB

URL	Transfer Size	Est Savings
www.jetbrains.com/_assets/common.578dd59ae3f4b25d9603.js	1.4 MiB	590.6 KiB
www.googletagmanager.com/gtm.js?id=GTM-NL29B334&gtm=4e64f0&bs=ctrl2	167.8 KiB	77.3 KiB
www.googletagmanager.com/gtag/js?id=G-9J976DJZ68&cx=c&gtm=4e64f0&bs=ctrl2	174.8 KiB	63.4 KiB
www.googletagmanager.com/gtag/js?id=G-M8TDRLXFQH&cx=c&gtm=4e64f0&bs=ctrl2	143.5 KiB	61.8 KiB
www.jetbrains.com/_assets/default-page.73f2ab31a743063a654e.js	87.1 KiB	55.5 KiB
www.googletagmanager.com/gtm.js?id=GTM-5P98	204.7 KiB	55.3 KiB
resources.jetbrains.com/storage/optly/26613100737.js	130.2 KiB	50.5 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
www.jetbrains.com/_assets/common.578dd59ae3f4b25d9603.js	3.2 s	1.1 s	317 ms
Unattributable	763 ms	38 ms	0.0 ms
www.googletagmanager.com/gtm.js?id=GTM-5P98	725 ms	647 ms	58 ms
resources.jetbrains.com/storage/optly/26613100737.js	630 ms	551 ms	56 ms
www.jetbrains.com/_assets/index.entry.d31a7d149928a0ce6198.js	591 ms	120 ms	9.2 ms
www.jetbrains.com/	509 ms	30 ms	8.4 ms
cdn.cookiehub.eu/c2/0acea1b9.js	446 ms	265 ms	12 ms
www.jetbrains.com/_assets/default-page.73f2ab31a743063a654e.js	345 ms	302 ms	23 ms
www.googletagmanager.com/gtag/js?id=G-9J976DJZ68&cx=c&gtm=4e64f0&bs=ctrl2	339 ms	285 ms	51 ms
www.googletagmanager.com/gtm.js?id=GTM-NL29B334&gtm=4e64f0&bs=ctrl2	246 ms	184 ms	60 ms
www.googletagmanager.com/gtag/js?id=G-M8TDRLXFQH&cx=c&gtm=4e64f0&bs=ctrl2	187 ms	157 ms	28 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	3.7 s
Parse HTML & CSS	1.5 s
Other	1.1 s
Style & Layout	806 ms
Script Parsing & Compilation	630 ms
Rendering	202 ms
Garbage Collection	123 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
www.jetbrains.com/img/home-page/screenshots/rider.gif	3.4 MiB
www.jetbrains.com/_assets/common.578dd59ae3f4b25d9603.js	1.4 MiB
/_assets/www/part/banner-section/air-banner/air-banner-ba...	351.7 KiB
www.jetbrains.com/img/home-page/rider-main-window.png	242.1 KiB
www.jetbrains.com/img/home-page/pycharm-main-window.png	241.5 KiB
www.jetbrains.com/img/home-page/webstorm-main-window.png	235.2 KiB
www.jetbrains.com/img/home-page/idea-main-window.png	234.4 KiB
www.googletagmanager.com/gtm.js?id=GTM-5P98	205.0 KiB
www.googletagmanager.com/gtag/js?id=G-9J976DJZ68&cx=c&gtm=4e64f0&bs=ctrl2	174.9 KiB
www.googletagmanager.com/gtm.js?id=GTM-NL29B334&gtm=4e64f0&bs=ctrl2	167.8 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
div.value-card > div._wrapper_77npfm_3 > div.value-card__img > img `div.value-card > div._wrapper_77npfm_3 > div.value-card__img > img`	www.jetbrains.com/img/home-page/screenshots/rider.gif
a._clickable_17150hd_111 > div.wt-row > div.wt-col > img.wt-display-none `a._clickable_17150hd_111 > div.wt-row > div.wt-col > img.wt-display-none`	www.jetbrains.com/img/home-page/teamcity-pipe.png
scala `div.cmn-ui-marquee > div.cmn-ui-marquee__group > div.main-languages-item > img.main-languages-item__logo`	www.jetbrains.com/img/logos/languages/logo-scala.png
scala `div.cmn-ui-marquee > div.cmn-ui-marquee__group > div.main-languages-item > img.main-languages-item__logo`	www.jetbrains.com/img/logos/languages/logo-scala.png
BMW `div.wt-section > div.cmn-ui-marquee > div.cmn-ui-marquee__group > img.main-customers-list__logo`	www.jetbrains.com/img/home-page/companies/bmw.png
BMW `div.wt-section > div.cmn-ui-marquee > div.cmn-ui-marquee__group > img.main-customers-list__logo`	www.jetbrains.com/img/home-page/companies/bmw.png
Visa `div.wt-section > div.cmn-ui-marquee > div.cmn-ui-marquee__group > img.main-customers-list__logo`	www.jetbrains.com/img/home-page/companies/visa.svg
Visa `div.wt-section > div.cmn-ui-marquee > div.cmn-ui-marquee__group > img.main-customers-list__logo`	www.jetbrains.com/img/home-page/companies/visa.svg
Zynex `div.wt-row > a._clickable_17150hd_111 > div.main-case-study-card__logo > img`	www.jetbrains.com/img/logos/customers/logo_zynex_white.svg
div.soc-certification-banner > div.wt-row > div.wt-col > img.soc-certification-banner__logo `div.soc-certification-banner > div.wt-row > div.wt-col > img.soc-certification-banner__logo`	/_assets/common-ui/components/soc-certification-banner/im...
Citibank `div.wt-section > div.cmn-ui-marquee > div.cmn-ui-marquee__group > img.main-customers-list__logo`	www.jetbrains.com/img/home-page/companies/citibank.svg
Citibank `div.wt-section > div.cmn-ui-marquee > div.cmn-ui-marquee__group > img.main-customers-list__logo`	www.jetbrains.com/img/home-page/companies/citibank.svg
Valve `div.wt-section > div.cmn-ui-marquee > div.cmn-ui-marquee__group > img.main-customers-list__logo`	www.jetbrains.com/img/home-page/companies/valve.svg
Valve `div.wt-section > div.cmn-ui-marquee > div.cmn-ui-marquee__group > img.main-customers-list__logo`	www.jetbrains.com/img/home-page/companies/valve.svg
div.value-card > div._wrapper_77npfm_3 > div.value-card__img > img `div.value-card > div._wrapper_77npfm_3 > div.value-card__img > img`	www.jetbrains.com/img/home-page/screenshots/pycharm.svg
div.value-card > div._wrapper_77npfm_3 > div.value-card__img > img `div.value-card > div._wrapper_77npfm_3 > div.value-card__img > img`	www.jetbrains.com/img/home-page/screenshots/webstorm.svg
div.value-card > div._wrapper_77npfm_3 > div.value-card__img > img `div.value-card > div._wrapper_77npfm_3 > div.value-card__img > img`	www.jetbrains.com/img/home-page/screenshots/idea.svg
Google `div.wt-section > div.cmn-ui-marquee > div.cmn-ui-marquee__group > img.main-customers-list__logo`	www.jetbrains.com/img/home-page/companies/google.svg
Google `div.wt-section > div.cmn-ui-marquee > div.cmn-ui-marquee__group > img.main-customers-list__logo`	www.jetbrains.com/img/home-page/companies/google.svg
Booking.com `div.wt-section > div.cmn-ui-marquee > div.cmn-ui-marquee__group > img.main-customers-list__logo`	www.jetbrains.com/img/home-page/companies/booking-com.svg
Booking.com `div.wt-section > div.cmn-ui-marquee > div.cmn-ui-marquee__group > img.main-customers-list__logo`	www.jetbrains.com/img/home-page/companies/booking-com.svg
Tesla `div.wt-section > div.cmn-ui-marquee > div.cmn-ui-marquee__group > img.main-customers-list__logo`	www.jetbrains.com/img/home-page/companies/tesla.svg
Oculus `div.wt-section > div.cmn-ui-marquee > div.cmn-ui-marquee__group > img.main-customers-list__logo`	www.jetbrains.com/img/home-page/companies/oculus.svg
Tesla `div.wt-section > div.cmn-ui-marquee > div.cmn-ui-marquee__group > img.main-customers-list__logo`	www.jetbrains.com/img/home-page/companies/tesla.svg
Oculus `div.wt-section > div.cmn-ui-marquee > div.cmn-ui-marquee__group > img.main-customers-list__logo`	www.jetbrains.com/img/home-page/companies/oculus.svg
ThoughtWorks `div.wt-section > div.cmn-ui-marquee > div.cmn-ui-marquee__group > img.main-customers-list__logo`	www.jetbrains.com/img/home-page/companies/thought-works.svg
ThoughtWorks `div.wt-section > div.cmn-ui-marquee > div.cmn-ui-marquee__group > img.main-customers-list__logo`	www.jetbrains.com/img/home-page/companies/thought-works.svg
Shopify `div.wt-section > div.cmn-ui-marquee > div.cmn-ui-marquee__group > img.main-customers-list__logo`	www.jetbrains.com/img/home-page/companies/shopify.svg
Shopify `div.wt-section > div.cmn-ui-marquee > div.cmn-ui-marquee__group > img.main-customers-list__logo`	www.jetbrains.com/img/home-page/companies/shopify.svg
Gradle Inc. `div.wt-row > a._clickable_17150hd_111 > div.main-case-study-card__logo > img`	www.jetbrains.com/img/logos/customers/logo_gradle_white.svg
NASA `div.wt-section > div.cmn-ui-marquee > div.cmn-ui-marquee__group > img.main-customers-list__logo`	www.jetbrains.com/img/home-page/companies/nasa.svg
NASA `div.wt-section > div.cmn-ui-marquee > div.cmn-ui-marquee__group > img.main-customers-list__logo`	www.jetbrains.com/img/home-page/companies/nasa.svg
Volkswagen `div.wt-section > div.cmn-ui-marquee > div.cmn-ui-marquee__group > img.main-customers-list__logo`	www.jetbrains.com/img/home-page/companies/volkswagen.svg
Volkswagen `div.wt-section > div.cmn-ui-marquee > div.cmn-ui-marquee__group > img.main-customers-list__logo`	www.jetbrains.com/img/home-page/companies/volkswagen.svg
X `div.wt-section > div.cmn-ui-marquee > div.cmn-ui-marquee__group > img.main-customers-list__logo`	www.jetbrains.com/img/home-page/companies/x.svg
X `div.wt-section > div.cmn-ui-marquee > div.cmn-ui-marquee__group > img.main-customers-list__logo`	www.jetbrains.com/img/home-page/companies/x.svg
div.wt-container > div.main-air-banner > div.main-air-banner__text-container > img `div.wt-container > div.main-air-banner > div.main-air-banner__text-container > img`	www.jetbrains.com/part/banner-section/air-banner/air-logo.svg

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

●Layout shift culprits

●Optimize DOM size

●LCP breakdown

●Modern HTTP

●Optimize viewport for mobile

●Minify CSS

●Minify JavaScript

●User Timing marks and measures 11 user timings

●Avoid long main-thread tasks 17 long tasks found

●Page didn't prevent back/forward cache restoration

●Network Requests

●Network Round Trip Times 90 ms

●Server Backend Latencies 80 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

Accessibility

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

Names and labels

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div.wt-container > div.wt-row > div.wt-col > button._main_10h2pj3_62 `div.wt-container > div.wt-row > div.wt-col > button._main_10h2pj3_62`
div.wt-container > div.wt-row > div.wt-col > button._main_10h2pj3_62 `div.wt-container > div.wt-row > div.wt-col > button._main_10h2pj3_62`

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
English Deutsch Español Français 日本語 한국어 Русский 简体中文 Português do Brasil `div._main_s9jmmi_16 > div > div._wrapper_s9jmmi_20 > select._select_s9jmmi_24`

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.

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
Boost developer experience `div.wt-container > div.wt-row > div._tile_17150hd_245 > h4._rs-h2_1owszn1_1`

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`

These items highlight common accessibility best practices.

○Interactive controls are keyboard focusable

○Interactive elements indicate their purpose and state

○The page has a logical tab order

○Visual order on the page follows DOM order

○User focus is not accidentally trapped in a region

○The user's focus is directed to new content added to the page

○HTML5 landmark elements are used to improve navigation

○Offscreen content is hidden from assistive technology

○Custom controls have associated labels

○Custom controls have ARIA roles

●`[aria-*]` attributes match their roles

●`[aria-hidden="true"]` is not present on the document `<body>`

●`[role]`s have all required `[aria-*]` attributes

●`[role]` values are valid

●`[aria-*]` attributes have valid values

●`[aria-*]` attributes are valid and not misspelled

●Image elements have `[alt]` attributes

●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

●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.

●Document has a main landmark.

●Deprecated ARIA roles were not used

●Identical links have the same purpose.

○`[accesskey]` values are unique

○`button`, `link`, and `menuitem` elements 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

○Form elements have associated labels

○The document does not use `<meta http-equiv="refresh">`

○`<object>` elements have alternate text

○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.

○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.

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.

URL
www.jetbrains.com/_assets/common.578dd59ae3f4b25d9603.js

●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

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.jetbrains.com/legal/docs/privacy/cookie-notice/	Learn more
air.dev/	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`