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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.

33

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
mc.yandex.ru/metrika/tag.js3600.0 s85.1 KiB
privacy-cs.mail.ru/static/sync-loader.js600.0 s21.9 KiB
/dk;jsessionid=aafd0ac5a3a9da149124fb9a90434a5bbc8970cc06...0.0 ms877 B
/dk;jsessionid=aafd0ac5a3a9da149124fb9a90434a5bbc8970cc06...0.0 ms459 B
/dk;jsessionid=aafd0ac5a3a9da149124fb9a90434a5bbc8970cc06...0.0 ms458 B
/dk;jsessionid=aafd0ac5a3a9da149124fb9a90434a5bbc8970cc06...0.0 ms458 B
/dk;jsessionid=aafd0ac5a3a9da149124fb9a90434a5bbc8970cc06...0.0 ms458 B
r3.mail.ru/k?ok_id=&t=obLD1AAAAAAIAAAA&src=mobile&bci=130703234489444060207200.0 s428 B
mc.yandex.com/metrika/advert.gif?t=gdpr(14)ti(4)3600.0 s187 B
/sync_cookie_image_decide_secondary?cid=87663567&scid=bef...0.0 ms79 B
/sync_cookie_image_decide?cid=87663567&scid=e503b250-bff9...0.0 ms67 B

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.

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:35.357 source:map[column:884 line:62 type:source-location url:https://m.ok.ru/mres/batch/js/head/f4d757e/head.js urlProvider:network]] map[reflowTime:0.759 source:map[column:69898 line:4 type:source-location url:https://privacy-cs.mail.ru/static/sync-loader.js urlProvider:network]]]

Avoid chaining critical requests by reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load.

Why this matters

Performance issues directly impact user engagement and conversion rates.

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
value: no origins were preconnected
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.

URLTransfer SizeDuration
m.ok.ru/mres/batch/js/head/f4d757e/head.js24.0 KiB150 ms
m.ok.ru/mres/batch/js/healthPage/accbaa14/coreKeeper.js11.9 KiB150 ms
m.ok.ru/mres/css/mobile-sm-BQE7t3eI.css13.6 KiB
m.ok.ru/mres/batch/js/healthPage/accbaa14/xray.js3.9 KiB
m.ok.ru/mres/css/mobile-main-zmIXP0Fn.css61.8 KiB600 ms
m.ok.ru/mres/css/reactions-panel-GCl0FsaS.css804 B
m.ok.ru/mres/batch/js/healthPage/accbaa14/userKeeper.js688 B
m.ok.ru/mres/default/js/web-vitals.js2.7 KiB
m.ok.ru/mres/css/input-text-DnkQboEs.css1.4 KiB
m.ok.ru/mres/css/rtterms-banner-BSKVRrCX.css601 B
m.ok.ru/mres/css/field-elements-iB1Q1i-h.css622 B
m.ok.ru/mres/css/cookie-banner-OukxOZbL.css878 B
m.ok.ru/mres/css/toggle-button-CdV05dEi.css593 B
m.ok.ru/mres/css/buttons-set-DEZnQMko.css691 B
m.ok.ru/mres/react/clips-fullscreen_f8f4b577.css30.5 KiB450 ms
m.ok.ru/mres/react/toast-manager_66e9d392.css27.1 KiB300 ms
m.ok.ru/mres/react/bdui-events-adapter_37436b03.css357 B
m.ok.ru/mres/css/landing-promo-BIg4XfVZ.css1.9 KiB
m.ok.ru/mres/css/ds-colors-Cyazo0Br.css1.6 KiB
m.ok.ru/mres/css/payment-DyVadPr8.css4.0 KiB
m.ok.ru/mres/css/reset-CGlH4YYT.css661 B
m.ok.ru/mres/css/text-icon-DmvEZ7a1.css8.6 KiB
m.ok.ru/mres/css/base-button-BPQMROgV.css3.9 KiB150 ms

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

Redirects introduce additional delays before the page can be loaded. Learn how to avoid page redirects.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 880 ms
URLTime Spent
ok.ru/880 ms
m.ok.ru/0.0 ms

Time to Interactive is the amount of time it takes for the page to become fully interactive. Learn more about the Time to Interactive metric.

Why this matters

Performance issues directly impact user engagement and conversion rates.

TTI

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 129.4 KiB
URLTransfer SizeEst Savings
m.ok.ru/mres/css/mobile-main-zmIXP0Fn.css61.5 KiB59.5 KiB
m.ok.ru/mres/react/clips-fullscreen_f8f4b577.css30.2 KiB30.2 KiB
m.ok.ru/mres/react/toast-manager_66e9d392.css26.8 KiB26.8 KiB
m.ok.ru/mres/css/mobile-sm-BQE7t3eI.css13.3 KiB12.9 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: 5.1 s 3.4 MiB
URLTransfer SizeEst Savings
m.ok.ru/mres/batch/js/reacte58fc505/vendors.js1.7 MiB1.6 MiB
m.ok.ru/mres/batch/js/reacte58fc505/react-loader.js915.7 KiB804.8 KiB
m.ok.ru/mres/batch/js/photos6a361c01/photos.module.js243.2 KiB212.2 KiB
m.ok.ru/mres/batch/js/registrationf815cd9a/landing.module.js226.7 KiB200.4 KiB
m.ok.ru/mres/batch/js/donate73192632/donate.module.js226.3 KiB200.0 KiB
m.ok.ru/mres/batch/js/common/f0a82b76/common.js225.3 KiB160.9 KiB
m.ok.ru/mres/react/clips-fullscreen_dedf91f.js178.3 KiB97.1 KiB
m.ok.ru/mres/react/toast-manager_b464fc79.js165.2 KiB89.2 KiB
mc.yandex.ru/metrika/tag.js84.5 KiB50.8 KiB
m.ok.ru/mres/batch/js/games650a6236/appBottomLaunch.js25.2 KiB22.3 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
Unattributable1.2 s41 ms0.0 ms
privacy-cs.mail.ru/static/sync-loader.js1.2 s821 ms51 ms
m.ok.ru/mres/batch/js/common/f0a82b76/common.js1.0 s309 ms165 ms
m.ok.ru/mres/batch/js/head/f4d757e/head.js614 ms507 ms14 ms
m.ok.ru/mres/react/clips-fullscreen_dedf91f.js540 ms388 ms152 ms
m.ok.ru/mres/react/toast-manager_b464fc79.js411 ms279 ms122 ms
mc.yandex.ru/metrika/tag.js384 ms324 ms52 ms
m.ok.ru/mres/batch/js/reacte58fc505/vendors.js358 ms48 ms308 ms
m.ok.ru/279 ms60 ms26 ms
m.ok.ru/mres/batch/js/photos6a361c01/photos.module.js214 ms32 ms181 ms
top-fwz1.mail.ru/js/code.js190 ms152 ms11 ms
m.ok.ru/mres/batch/js/reacte58fc505/react-loader.js188 ms11 ms177 ms
m.ok.ru/mres/batch/js/healthPage/accbaa14/coreKeeper.js165 ms101 ms5.9 ms
m.ok.ru/mres/batch/js/donate73192632/donate.module.js154 ms7.0 ms146 ms
m.ok.ru/mres/batch/js/registrationf815cd9a/landing.module.js147 ms6.7 ms139 ms
m.ok.ru/mres/default/js/jsChallengeBgReq.js80 ms30 ms1.0 ms
m.ok.ru/mres/default/js/streamsense.5.2.0.160629.min.js59 ms22 ms34 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 Evaluation3.2 s
Other1.8 s
Script Parsing & Compilation1.6 s
Style & Layout557 ms
Parse HTML & CSS126 ms
Garbage Collection28 ms
Rendering26 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 with WebSocket cannot enter back/forward cache.Pending browser support
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
Back/forward cache is disabled because WebSocket has been used.Not actionable

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 > a.login-landing-promo-footer_link > span.ic_w > img.ic-img li > a.login-landing-promo-footer_link > span.ic_w > img.ic-img
m.ok.ru/mres/img/flags/flag_en.png

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

●Layout shift culprits
●Optimize DOM size
●Font display
●Improve image delivery
●LCP breakdown
●Modern HTTP
●Optimize viewport for mobile
●Minify CSS
●Minify JavaScript
●Avoids enormous network payloads Total size was 2,661 KiB
●Avoid long main-thread tasks 20 long tasks found
●Network Requests
●Network Round Trip Times 60 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 70 ms
○INP breakdown
○LCP request discovery
○User Timing marks and measures
○Avoid non-composited animations
○Avoid large layout shifts
91

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

Informative elements should aim for short, descriptive alternate text. Decorative elements can be ignored with an empty alt attribute. Learn more about the `alt` attribute.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
li > a.login-landing-promo-footer_link > span.ic_w > img.ic-img li > a.login-landing-promo-footer_link > span.ic_w > img.ic-img

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.

Best practices

One main landmark helps screen reader users navigate a web page. Learn more about landmarks.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
html#root html#root

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>`
●`[aria-*]` attributes have valid values
●`[aria-*]` attributes are valid and not misspelled
●Input buttons have discernible text.
●`[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
●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.
●The page contains a heading, skip link, or landmark region
○`[accesskey]` values are unique
○`button`, `link`, and `menuitem` elements have accessible names
○Deprecated ARIA roles were not used
○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
○`[role]`s have all required `[aria-*]` attributes
○Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.
○`[role]`s are contained by their required parent element
○`[role]` values are valid
○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
○Buttons have an accessible name
○`<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
○Heading elements appear in a sequentially-descending order
○`<html>` element has an `[xml:lang]` attribute with the same base language as the `[lang]` attribute.
○`<input type="image">` elements have `[alt]` text
○Form elements have associated labels
○Links are distinguishable without relying on color.
○Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
○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.
○Identical links have the same purpose.
○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.
73

Best Practices

User Experience

Image natural dimensions should be proportional to the display size and the pixel ratio to maximize image clarity. Learn how to provide responsive images.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLDisplayed sizeActual sizeExpected size
li > a.login-landing-promo-footer_link > span.ic_w > img.ic-img li > a.login-landing-promo-footer_link > span.ic_w > img.ic-img
m.ok.ru/mres/img/flags/flag_en.png17 x 1222 x 1626 x 18

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
Unload event listeners are deprecated and will be removed.
m.ok.ru/mres/batch/js/healthPage/accbaa14/coreKeeper.js line 7, col 28175

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
mres/img/browser-theme/oklogo.png
Failed to load resource: net::ERR_NAME_NOT_RESOLVED

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.

URLMap URL
m.ok.ru/mres/batch/js/registrationf815cd9a/landing.module.js
m.ok.ru/mres/batch/js/reacte58fc505/vendors.js
m.ok.ru/mres/batch/js/reacte58fc505/react-loader.js
m.ok.ru/mres/batch/js/photos6a361c01/photos.module.js
m.ok.ru/mres/batch/js/donate73192632/donate.module.js
m.ok.ru/mres/batch/js/common/f0a82b76/common.js
m.ok.ru/mres/batch/js/reacte58fc505/core-client.jsm.ok.ru/mres/batch/js/reacte58fc505/source-maps/core-client.js.map
m.ok.ru/mres/react/toast-manager_b464fc79.jsm.ok.ru/mres/react/source-maps/toast-manager.js.map
m.ok.ru/mres/react/clips-fullscreen_dedf91f.jsm.ok.ru/mres/react/source-maps/clips-fullscreen.js.map
●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
●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
●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
85

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
/dk;jsessionid=aafd0ac5a3a9da149124fb9a90434a5bbc8970cc06...More
m.ok.ru/cookiepolicyMore information

Informative elements should aim for short, descriptive alternate text. Decorative elements can be ignored with an empty alt attribute. Learn more about the `alt` attribute.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
li > a.login-landing-promo-footer_link > span.ic_w > img.ic-img li > a.login-landing-promo-footer_link > span.ic_w > img.ic-img

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`

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