Skip to content
https://master-220v.ru

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.

87

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.

Layout shifts occur when elements move absent any user interaction. Investigate the causes of layout shifts, such as elements being added, removed, or their fonts changing as the page loads.

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:node label:Element subItemsHeading:map[key:extra] valueType:node] map[granularity:0.001 key:score label:Layout shift score subItemsHeading:map[key:cause valueType:text] valueType:numeric]]
items: [map[node:map[type:text value:Total] score:0.18161498199588474] map[node:map[boundingRect:map[bottom:788 height:290 left:919 right:1319 top:498 width:400] lhId:page-26-TD nodeLabel:Аварийная электрика path:0,HTML,1,BODY,1,TABLE,0,TBODY,0,TR,0,TD,0,TABLE,0,TBODY,3,TR,1,TD selector:table > tbody > tr > td snippet:<td width="30%" valign="center"> type:node] score:0.16123760698494] map[node:map[boundingRect:map[bottom:772 height:256 left:-190 right:9810 top:516 width:10000] lhId:page-28-DIV nodeLabel:Аварийная электрика path:0,HTML,1,BODY,1,TABLE,0,TBODY,0,TR,0,TD,0,TABLE,0,TBODY,3,TR,1,TD,0,DIV,0,DIV selector:tr > td > div.sl_ctr > div.sldr snippet:<div class="sldr" style="margin-left: -1110px;"> type:node] score:0.02037737501094475]]
headings: [map[key:node label:Element subItemsHeading:map[key:extra] valueType:node] map[granularity:0.001 key:score label:Layout shift score subItemsHeading:map[key:cause valueType:text] valueType:numeric]]
items: [map[node:map[type:text value:Total] score:0.01937743794326241] map[node:map[boundingRect:map[bottom:772 height:256 left:-190 right:9810 top:516 width:10000] lhId:page-28-DIV nodeLabel:Аварийная электрика path:0,HTML,1,BODY,1,TABLE,0,TBODY,0,TR,0,TD,0,TABLE,0,TBODY,3,TR,1,TD,0,DIV,0,DIV selector:tr > td > div.sl_ctr > div.sldr snippet:<div class="sldr" style="margin-left: -1110px;"> type:node] score:0.0005438556168461605] map[node:map[boundingRect:map[bottom:772 height:256 left:-190 right:9810 top:516 width:10000] lhId:page-28-DIV nodeLabel:Аварийная электрика path:0,HTML,1,BODY,1,TABLE,0,TBODY,0,TR,0,TD,0,TABLE,0,TBODY,3,TR,1,TD,0,DIV,0,DIV selector:tr > td > div.sl_ctr > div.sldr snippet:<div class="sldr" style="margin-left: -1110px;"> type:node] score:0.000542995085806847] map[node:map[boundingRect:map[bottom:772 height:256 left:-190 right:9810 top:516 width:10000] lhId:page-28-DIV nodeLabel:Аварийная электрика path:0,HTML,1,BODY,1,TABLE,0,TBODY,0,TR,0,TD,0,TABLE,0,TBODY,3,TR,1,TD,0,DIV,0,DIV selector:tr > td > div.sl_ctr > div.sldr snippet:<div class="sldr" style="margin-left: -1110px;"> type:node] score:0.0005421345547675334] map[node:map[boundingRect:map[bottom:772 height:256 left:-190 right:9810 top:516 width:10000] lhId:page-28-DIV nodeLabel:Аварийная электрика path:0,HTML,1,BODY,1,TABLE,0,TBODY,0,TR,0,TD,0,TABLE,0,TBODY,3,TR,1,TD,0,DIV,0,DIV selector:tr > td > div.sl_ctr > div.sldr snippet:<div class="sldr" style="margin-left: -1110px;"> type:node] score:0.0005378318995709658] map[node:map[boundingRect:map[bottom:772 height:256 left:-190 right:9810 top:516 width:10000] lhId:page-28-DIV nodeLabel:Аварийная электрика path:0,HTML,1,BODY,1,TABLE,0,TBODY,0,TR,0,TD,0,TABLE,0,TBODY,3,TR,1,TD,0,DIV,0,DIV selector:tr > td > div.sl_ctr > div.sldr snippet:<div class="sldr" style="margin-left: -1110px;"> type:node] score:0.0005361108374923386]]
headings: [map[key:node label:Element subItemsHeading:map[key:extra] valueType:node] map[granularity:0.001 key:score label:Layout shift score subItemsHeading:map[key:cause valueType:text] valueType:numeric]]
items: [map[node:map[type:text value:Total] score:0.019189842176692055] map[node:map[boundingRect:map[bottom:772 height:256 left:-190 right:9810 top:516 width:10000] lhId:page-28-DIV nodeLabel:Аварийная электрика path:0,HTML,1,BODY,1,TABLE,0,TBODY,0,TR,0,TD,0,TABLE,0,TBODY,3,TR,1,TD,0,DIV,0,DIV selector:tr > td > div.sl_ctr > div.sldr snippet:<div class="sldr" style="margin-left: -1110px;"> type:node] score:0.0005438556168461605] map[node:map[boundingRect:map[bottom:772 height:256 left:-190 right:9810 top:516 width:10000] lhId:page-28-DIV nodeLabel:Аварийная электрика path:0,HTML,1,BODY,1,TABLE,0,TBODY,0,TR,0,TD,0,TABLE,0,TBODY,3,TR,1,TD,0,DIV,0,DIV selector:tr > td > div.sl_ctr > div.sldr snippet:<div class="sldr" style="margin-left: -1110px;"> type:node] score:0.0005438556168461605] map[node:map[boundingRect:map[bottom:772 height:256 left:-190 right:9810 top:516 width:10000] lhId:page-28-DIV nodeLabel:Аварийная электрика path:0,HTML,1,BODY,1,TABLE,0,TBODY,0,TR,0,TD,0,TABLE,0,TBODY,3,TR,1,TD,0,DIV,0,DIV selector:tr > td > div.sl_ctr > div.sldr snippet:<div class="sldr" style="margin-left: -1110px;"> type:node] score:0.0005404134926889064] map[node:map[boundingRect:map[bottom:772 height:256 left:-190 right:9810 top:516 width:10000] lhId:page-28-DIV nodeLabel:Аварийная электрика path:0,HTML,1,BODY,1,TABLE,0,TBODY,0,TR,0,TD,0,TABLE,0,TBODY,3,TR,1,TD,0,DIV,0,DIV selector:tr > td > div.sl_ctr > div.sldr snippet:<div class="sldr" style="margin-left: -1110px;"> type:node] score:0.0005378318995709658] map[node:map[boundingRect:map[bottom:772 height:256 left:-190 right:9810 top:516 width:10000] lhId:page-28-DIV nodeLabel:Аварийная электрика path:0,HTML,1,BODY,1,TABLE,0,TBODY,0,TR,0,TD,0,TABLE,0,TBODY,3,TR,1,TD,0,DIV,0,DIV selector:tr > td > div.sl_ctr > div.sldr snippet:<div class="sldr" style="margin-left: -1110px;"> type:node] score:0.0005361108374923386]]

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.

URLEst Savings
yastatic.net/islands/_/SmqPmIMEXrW4lOY8QrhTUVDbrro.woff110 ms
yastatic.net/islands/_/bIx8jOfCEfR-mECoDUEZywDBuHA.woff80 ms

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
Электромонтаж в офисе tbody > tr > td > img
master-220v.ru/image/main-table/main-table-8s.jpg127.6 KiB113.3 KiB
Обслуживание объектов электроснабжения tbody > tr > td > img
master-220v.ru/image/main-table/main-table-14s.jpg114.9 KiB100.6 KiB
Электрификация объектов tbody > tr > td > img
master-220v.ru/image/main-table/main-table-4s.jpg103.6 KiB89.4 KiB
Установка трубостоек ввод электричества tbody > tr > td > img
master-220v.ru/image/main-table/main-table-1s.jpg?33103.6 KiB89.3 KiB
Автономное электроснабжение tbody > tr > td > img
master-220v.ru/image/main-table/main-table-15s.jpg100.5 KiB86.2 KiB
Электромонтаж в частном и загородном доме tbody > tr > td > img
master-220v.ru/image/main-table/main-table-9s.jpg90.3 KiB76.0 KiB
Аварийная служба электрики tbody > tr > td > img
master-220v.ru/image/main-table/main-table-2s.jpg89.0 KiB74.8 KiB
Согласование мощности tbody > tr > td > img
master-220v.ru/image/main-table/main-table-10s.jpg88.1 KiB73.9 KiB
Промышленный электромонтаж tbody > tr > td > img
master-220v.ru/image/main-table/main-table-6s.jpg86.8 KiB72.6 KiB
Оформление мощности tbody > tr > td > img
master-220v.ru/image/main-table/main-table-11s.jpg85.9 KiB71.6 KiB
Проектирование элетромонтажа tbody > tr > td > img
master-220v.ru/image/main-table/main-table-5s.jpg80.8 KiB66.6 KiB
Увеличение мощности 15-150 кВт tbody > tr > td > img
master-220v.ru/image/main-table/main-table-12s.jpg80.3 KiB66.1 KiB
Электромонтаж в квартире tbody > tr > td > img
master-220v.ru/image/main-table/main-table-7s.jpg75.0 KiB60.8 KiB
Уличное освещение tbody > tr > td > img
master-220v.ru/image/main-table/main-table-13s.jpg73.6 KiB59.4 KiB
Ремонт воздушных линий электропередач tbody > tr > td > img
master-220v.ru/image/main-table/main-table-3s.jpg67.4 KiB53.2 KiB
Ремонт электрооборудования td > div.sl_ctr > div.sldr > img
master-220v.ru/slider/images/slide-1.jpg64.6 KiB49.2 KiB
Автономное электроснабжение td > div.sl_ctr > div.sldr > img
master-220v.ru/slider/images/slide-3.jpg57.2 KiB41.9 KiB
Обслуживание электроустановок td > div.sl_ctr > div.sldr > img
master-220v.ru/slider/images/slide-2.jpg52.7 KiB37.4 KiB
Ремонт электрики tr > td > div.morph > img
master-220v.ru/image/top-circle-menu/cm-3.png35.4 KiB31.7 KiB
Аварийная служба электрики tr > td > div.morph > img
master-220v.ru/image/top-circle-menu/cm-6.png35.0 KiB31.4 KiB
Аварийная электрика td > div.sl_ctr > div.sldr > img
master-220v.ru/slider/images/slide-6.jpg44.8 KiB29.4 KiB
Электромонтаж tr > td > div.morph > img
master-220v.ru/image/top-circle-menu/cm-1.png26.2 KiB22.5 KiB
Освещение tr > td > div.morph > img
master-220v.ru/image/top-circle-menu/cm-2.png22.1 KiB18.4 KiB
Электрификация tr > td > div.morph > img
master-220v.ru/image/top-circle-menu/cm-5.png17.5 KiB13.8 KiB
Учет электроэнергии tr > td > div.morph > img
master-220v.ru/image/top-circle-menu/cm-4.png17.0 KiB13.4 KiB
Установка генератора и систем бесперебойного электропитания tr > td > a > img
master-220v.ru/image/main/knopka-podrobnee.png7.9 KiB7.0 KiB

Optimize LCP by making the LCP image discoverable from the HTML immediately, and avoiding lazy-loading

Why this matters

Performance issues directly impact user engagement and conversion rates.

lhId: page-15-IMG
nodeLabel: Ремонт электрооборудования
path: 0,HTML,1,BODY,1,TABLE,0,TBODY,0,TR,0,TD,0,TABLE,0,TBODY,3,TR,1,TD,0,DIV,0,DIV,1,IMG
selector: td > div.sl_ctr > div.sldr > img
snippet: <img src="slider/images/slide-1.jpg" alt="Ремонт электрооборудования" width="370" height="255">

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

description: [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints help the browser establish a connection earlier in the page load, saving time when the first request for that origin is made. The following are the origins that the page preconnected to.
title: Preconnected origins
description: Add [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints to your most important origins, but try to use no more than 4.
title: Preconnect candidates
value: No additional origins are good candidates for preconnecting

Requests are blocking the page's initial render, which may delay LCP. Deferring or inlining can move these network requests out of the critical path.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLTransfer SizeDuration
fonts.googleapis.com/css2?family=Vollkorn:wght@900&display=swap1.1 KiB261 ms
master-220v.ru/css/fonts.css403 B
master-220v.ru/css/style.css1.5 KiB

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 s89.8 KiB
mc.yandex.ru/metrika/tag.js3600.0 s89.7 KiB
master-220v.ru/image/main-table/main-table-8s.jpg432000.0 s127.9 KiB
master-220v.ru/image/main-table/main-table-14s.jpg432000.0 s115.2 KiB
master-220v.ru/image/main-table/main-table-4s.jpg432000.0 s103.9 KiB
master-220v.ru/image/main-table/main-table-1s.jpg?33432000.0 s103.9 KiB
master-220v.ru/image/main-table/main-table-15s.jpg432000.0 s100.8 KiB
master-220v.ru/image/main-table/main-table-9s.jpg432000.0 s90.6 KiB
master-220v.ru/image/main-table/main-table-2s.jpg432000.0 s89.3 KiB
master-220v.ru/image/main-table/main-table-10s.jpg432000.0 s88.4 KiB
master-220v.ru/image/main-table/main-table-6s.jpg432000.0 s87.1 KiB
master-220v.ru/image/main-table/main-table-11s.jpg432000.0 s86.2 KiB
master-220v.ru/image/main-table/main-table-5s.jpg432000.0 s81.1 KiB
master-220v.ru/image/main-table/main-table-12s.jpg432000.0 s80.6 KiB
master-220v.ru/image/main-table/main-table-7s.jpg432000.0 s75.3 KiB
master-220v.ru/image/main-table/main-table-13s.jpg432000.0 s73.9 KiB
master-220v.ru/image/main-table/main-table-3s.jpg432000.0 s67.7 KiB
master-220v.ru/slider/images/slide-1.jpg432000.0 s64.8 KiB
master-220v.ru/slider/images/slide-3.jpg432000.0 s57.5 KiB
master-220v.ru/image/master-220v-fone.jpg432000.0 s57.3 KiB
master-220v.ru/slider/images/slide-2.jpg432000.0 s53.0 KiB
master-220v.ru/slider/images/slide-5.jpg432000.0 s45.6 KiB
master-220v.ru/slider/images/slide-6.jpg432000.0 s45.0 KiB
master-220v.ru/image/top-circle-menu/cm-3.png432000.0 s35.6 KiB
master-220v.ru/image/top-circle-menu/cm-6.png432000.0 s35.3 KiB
master-220v.ru/slider/js/jquery.min.js432000.0 s29.6 KiB
master-220v.ru/image/top-circle-menu/cm-1.png432000.0 s26.4 KiB
master-220v.ru/slider/images/slide-4.jpg432000.0 s24.8 KiB
master-220v.ru/image/top-circle-menu/cm-2.png432000.0 s22.3 KiB
master-220v.ru/image/top-circle-menu/cm-5.png432000.0 s17.7 KiB
master-220v.ru/image/top-circle-menu/cm-4.png432000.0 s17.3 KiB
master-220v.ru/image/main/molniya-tok-anime.gif432000.0 s12.6 KiB
master-220v.ru/image/main/knopka-podrobnee.png432000.0 s8.1 KiB
avatars.mds.yandex.net/get-yapic/39727/LgchzwVCSxoXPuGEg8g1iefMbzk-1/islands-68172800.0 s1.7 KiB
avatars.mds.yandex.net/get-yapic/62162/vRvR59lA5h4qgZqYcqcpHgoYg-1/islands-68172800.0 s1.6 KiB
/get-yapic/38135/IHoOsxBq9Qo6aBgwGIa8X53fH2c-1571085077/i...172800.0 s1.5 KiB
/get-yapic/6218514/gU1V3XoXfldDqIHrBd9DvivF9fQ-1/islands-68172800.0 s1.5 KiB
avatars.mds.yandex.net/get-yapic/31804/TMVYmBWAYlv0HvPoD9GrH8Y-1/islands-68172800.0 s1.2 KiB
mc.yandex.com/metrika/advert.gif3600.0 s437 B
mc.yandex.com/metrika/advert.gif?t=gdpr(14)ti(4)3600.0 s314 B
master-220v.ru/css/style.css432000.0 s1.5 KiB
master-220v.ru/image/main/ul-2.png432000.0 s1.4 KiB
master-220v.ru/image/main/ul-3.png432000.0 s1.3 KiB
master-220v.ru/image/main/ul-1.png432000.0 s1.3 KiB
/sync_cookie_image_decide_secondary?cid=95665444&scid=c8a...0.0 ms79 B
/sync_cookie_image_decide?cid=95665444&scid=49ef0fdd-18a6...0.0 ms67 B
master-220v.ru/css/fonts.css432000.0 s403 B

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

Diagnostics

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: 100 ms 125.4 KiB
URLTransfer SizeEst Savings
www.googletagmanager.com/gtag/js?id=G-XPJ7MLEPWX172.6 KiB72.8 KiB
mc.yandex.ru/metrika/tag.js89.2 KiB52.6 KiB

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

These are the largest layout shifts observed on the page. Each table item represents a single layout shift, and shows the element that shifted the most. Below each item are possible root causes that led to the layout shift. Some of these layout shifts may not be included in the CLS metric value due to windowing. Learn how to improve CLS

Why this matters

Performance issues directly impact user engagement and conversion rates.

ElementLayout shift score
Аварийная электрика table > tbody > tr > td
0.161
Аварийная электрика tr > td > div.sl_ctr > div.sldr
0.020
Аварийная электрика tr > td > div.sl_ctr > div.sldr
0.001
Аварийная электрика tr > td > div.sl_ctr > div.sldr
0.001
Аварийная электрика tr > td > div.sl_ctr > div.sldr
0.001
Аварийная электрика tr > td > div.sl_ctr > div.sldr
0.001
Аварийная электрика tr > td > div.sl_ctr > div.sldr
0.001
Аварийная электрика tr > td > div.sl_ctr > div.sldr
0.001
Аварийная электрика tr > td > div.sl_ctr > div.sldr
0.001
Аварийная электрика tr > td > div.sl_ctr > div.sldr
0.001
Аварийная электрика tr > td > div.sl_ctr > div.sldr
0.001
Аварийная электрика tr > td > div.sl_ctr > div.sldr
0.001
Аварийная электрика tr > td > div.sl_ctr > div.sldr
0.001
Аварийная электрика tr > td > div.sl_ctr > div.sldr
0.001
Аварийная электрика tr > td > div.sl_ctr > div.sldr
0.001
●Document request latency
●Optimize DOM size
●Forced reflow
●LCP breakdown
●Modern HTTP
●Optimize viewport for mobile
●Time to Interactive 1.3 s
●Max Potential First Input Delay 40 ms
●Minify CSS
●Minify JavaScript
●Reduce unused CSS
●Avoids enormous network payloads Total size was 2,434 KiB
●JavaScript execution time 0.2 s
●Minimizes main-thread work 0.5 s
●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 150 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 70 ms
○INP breakdown
○User Timing marks and measures
○Avoid long main-thread tasks
○Avoid non-composited animations
71

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

Screen reader users rely on frame titles to describe the contents of frames. Learn more about frame titles.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
td.radius2 > div > div > iframe td.radius2 > div > div > iframe

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
Москва / Московская область td > div > font > h3
Электромонтажные работы под ключ в Москве и Московской области td.radius1 > div > font > h4

These are opportunities to improve keyboard navigation in your application.

Internationalization and localization

If a page doesn't specify a `lang` attribute, a screen reader assumes that the page is in the default language that the user chose when setting up the screen reader. If the page isn't actually in the default language, then the screen reader might not announce the page's text correctly. Learn more about the `lang` attribute.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
html html

These are opportunities to improve the interpretation of your content by users in different locales.

Tables and lists

Screen readers have a specific way of announcing lists. Ensuring proper list structure aids screen reader output. Learn more about proper list structure.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
На главную Master-220v.Ru Аварийная служба электрики Электромонтажные работы … tbody > tr > td > ul.ul-1

Screen readers require list items (`<li>`) to be contained within a parent `<ul>`, `<ol>` or `<menu>` to be announced properly. Learn more about proper list structure.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
На главную Master-220v.Ru td > ul.ul-1 > font.strong > li
Аварийная служба электрики td > ul.ul-1 > font.strong > li
Электромонтажные работы td > ul.ul-1 > font.strong > li
Обустройство систем освещения td > ul.ul-1 > font.strong > li
Ремонт электрооборудования td > ul.ul-1 > font.strong > li
Обслуживание электроустановок td > ul.ul-1 > font.strong > li
Электрификация объектов td > ul.ul-1 > font.strong > li
Срочный ремонт электрики td > ul.ul-1 > font.strong > li
Установка опор ЛЭП и освещения td > ul.ul-1 > font.strong > li
Ремонт воздушных линий td > ul.ul-1 > font.strong > li
Автономное электроснабжение td > ul.ul-1 > font.strong > li
Ремонт и замена электропроводки td > ul.ul-1 > font.strong > li
Установка стабилизатора напряжения td > ul.ul-1 > font.strong > li
Трансформаторные подстанции td > ul.ul-1 > font.strong > li
Уличное освещение td > ul.ul-1 > font.strong > li
Установка трубостоек td > ul.ul-1 > font.strong > li
Ввод электричества td > ul.ul-1 > font.strong > li
Проектирование и расчеты td > ul.ul-1 > font.strong > li
Промышленный электромонтаж td > ul.ul-1 > font.strong > li
Заземление и Молниезащита td > ul.ul-1 > font.strong > li
Испытания кабельных линий td > ul.ul-1 > font.strong > li
Электролаборатория td > ul.ul-1 > font.strong > li
Зарядные станции для электромобилей td > ul.ul-1 > font.strong > li
Автовышка для электромонтажных работ td > ul.ul-1 > font.strong > li
Допуски - Свидетельства - Разрешения td > ul.ul-1 > font.strong > li

These are opportunities to improve the experience of reading tabular or list data using 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 html

These items highlight common accessibility best practices.

Screen readers have features to make navigating tables easier. Ensuring that tables use the actual caption element instead of cells with the `[colspan]` attribute may improve the experience for screen reader users. Learn more about captions.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
«ПрофЭлектро - 220/380» Комплексные услуги – электромонтажные работы, ремонт … tbody > tr > td > table
Установка трубостойки Аварийная электрика Ремонт воздушных линий Э… tbody > tr > td > table

Screen readers have features to make navigating tables easier. Ensuring that `<td>` elements in a large table (3 or more cells in width and height) have an associated table header may improve the experience for screen reader users. Learn more about table headers.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
«ПрофЭлектро - 220/380» Комплексные услуги – электромонтажные работы, ремонт … tbody > tr > td > table
Установка трубостойки Аварийная электрика Ремонт воздушных линий Э… tbody > tr > td > table
○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-hidden="true"]` is not present on the document `<body>`
●Buttons have an accessible name
●Image elements have `[alt]` attributes
●`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.
●Background and foreground colors have a sufficient contrast ratio
●Document has a `<title>` element
●Links are distinguishable without relying on color.
●Links have a discernible name
●Touch targets have sufficient size and spacing.
●Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.
●Image elements do not have `[alt]` attributes that are redundant text.
●Identical links have the same purpose.
○`[accesskey]` values are unique
○`[aria-*]` attributes match their roles
○`button`, `link`, and `menuitem` elements have accessible names
○ARIA attributes are used as specified for the element's role
○Deprecated ARIA roles were not used
○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 use only permitted ARIA attributes
○`[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
○`[aria-*]` attributes have valid values
○`[aria-*]` attributes are valid and not misspelled
○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
○`<html>` element has a valid value for its `[lang]` attribute
○`<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
○Select elements have associated label elements.
○Skip links are focusable.
○No element has a `[tabindex]` value greater than 0
○`<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
○Elements with visible text labels have matching accessible names.
92

Best Practices

Browser Compatibility

Specifying a doctype prevents the browser from switching to quirks-mode. Learn more about the doctype declaration.

Why this matters

Performance issues directly impact user engagement and conversion rates.

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.

SourceDescription
master-220v/404.php
Failed to load resource: net::ERR_NAME_NOT_RESOLVED
●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
●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 clickjacking with XFO or CSP
●Mitigate DOM-based XSS with Trusted Types
●Detected JavaScript libraries
●Page has valid source maps
○Redirects HTTP traffic to HTTPS
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