Lighthouse Mobile

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

SCORE

GRADE

FIX

REVIEW

PASS

INFO

Detailed Report

Audit breakdown by category with detailed findings.

Performance

Insights

Remove large, duplicate JavaScript modules from bundles to reduce unnecessary bytes consumed by network activity.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Polyfills and transforms enable older browsers to use new JavaScript features. However, many aren't necessary for modern browsers. Consider modifying your JavaScript build process to not transpile Baseline features, unless you know you must support older browsers. Learn why most sites can deploy ES6+ code without transpiling

Why this matters

Performance issues directly impact user engagement and conversion rates.

3rd party code can significantly impact load performance. Reduce and defer loading of 3rd party code to prioritize your page's content.

Why this matters

Performance issues directly impact user engagement and conversion rates.

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.

Each subpart has specific improvement strategies. Ideally, most of the LCP time should be spent on loading the resources, not within delays.

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:label label:Subpart valueType:text] map[key:duration label:Duration valueType:ms]]

items: [map[duration:14676.401 label:Time to first byte subpart:timeToFirstByte] map[duration:67.898 label:Element render delay subpart:elementRenderDelay]]

lhId: page-0-BODY

nodeLabel: body

path: 0,HTML,1,BODY

selector: body

snippet: <body>

Tap interactions may be delayed by up to 300 ms if the viewport is not optimized for mobile.

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

Keep the server response time for the main document short because all other requests depend on it. Learn more about the Time to First Byte metric.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 14.4 s

URL	Time Spent
lib.ru/	14.5 s

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

●Use efficient cache lifetimes

●Layout shift culprits

●Optimize DOM size

●Font display

●Forced reflow

●Improve image delivery

●Modern HTTP

●Network dependency tree

●Render blocking requests

●Max Potential First Input Delay 20 ms

●Minify CSS

●Minify JavaScript

●Reduce unused CSS

●Reduce unused JavaScript

●Avoids enormous network payloads Total size was 9 KiB

●JavaScript execution time 0.0 s

●Minimizes main-thread work 0.4 s

●Avoid long main-thread tasks 1 long task found

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

●Page didn't prevent back/forward cache restoration

●Network Requests

●Network Round Trip Times 80 ms

●Server Backend Latencies 7,210 ms

●Tasks

●Diagnostics

●Metrics

●Screenshot Thumbnails

●Final Screenshot

●Script Treemap Data

●Resources Summary

●Avoid multiple page redirects

○INP breakdown

○LCP request discovery

○User Timing marks and measures

○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.

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
[NEW:] `body > font > font > b`
30 Mar `li > tt > small > font`

These are opportunities to improve the legibility of your content.

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.

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
body > pre > center > img `body > pre > center > img`

Labels ensure that form controls are announced properly by assistive technologies, like screen readers. Learn more about form element labels.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
center > form > font > input `center > form > font > input`

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.

Tables and lists

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
( 0k) НОВЫЕ ПОСТУПЛЕНИЯ В БИБЛИОТЕКУ `body > li`
(156 ) РУССКАЯ СОВРЕМЕННАЯ ПРОЗА `body > li`
(163 ) Мемуары Чеченской войны `body > li`
(203 ) РУССКАЯ И ЗАРУБЕЖНАЯ ПОЭЗИЯ `body > li`
(193 ) ЗАРУБЕЖНАЯ ПРОЗА `body > li`
( 57 ) ЗАРУБЕЖНЫЙ ДЕТЕКТИВ `body > li`
(240 ) СОВЕТСКАЯ ФАНТАСТИКА `body > li`
(191 ) ЗАРУБЕЖНАЯ ФАНТАСТИКА `body > li`
(305 ) 15 Mar Авторская песня и русский рок `body > li`
(174 ) Альпинизм и горный туризм `body > li`
(198 ) Парашютизм `body > li`
(797 ) Библиотека изобразительных искусств `body > li`
(9897) Литературный журнал "Самиздат" `body > li`
(8467) MP3: "Музыкальный хостинг" `body > li`
(847 ) Зарубежные впечатления "Заграница" `body > li`
(266 ) Впечатления о заграничной жизни `body > li`
(112 ) Учим английский язык `body > li`
( 45 ) Кинофильмы, TV, video... `body > li`
(110 ) Зарубежная рок-музыка `body > li`
(248 ) Юмор ПРОЗА, ПОЭЗИЯ `body > li`
(203 ) РУССКАЯ И ЗАРУБЕЖНАЯ ПОЭЗИЯ `body > li`
(156 ) РУССКАЯ СОВРЕМЕННАЯ ПРОЗА `body > li`
( 66 ) РУССКАЯ ДОВОЕННАЯ ЛИТЕРАТУРА `body > li`
(213 ) РУССКАЯ КЛАССИКА `body > li`
( 6 ) ЛИТЕРАТУРА БЛИЖНЕГО ЗАРУБЕЖЬЯ `body > li`
( 75 ) СОВРЕМЕННАЯ ДРАМАТУРГИЯ `body > li`
(233 ) ПРОЗА 90-х - 2000-х годов `body > li`
(193 ) ПЕРЕВОДНАЯ ПРОЗА СТАРИННАЯ ЛИТЕРАТУРА `body > li`
( 60 ) СТАРИННАЯ ЕВРОПЕЙСКАЯ ЛИТЕРАТУРА `body > li`
( 75 ) АНТИЧНАЯ ЛИТЕРАТУРА `body > li`
( 34 ) КИТАЙСКАЯ ПОЭЗИЯ ДЕТСКАЯ И ПРИКЛЮЧЕНЧЕСКАЯ `body > li`
(145 ) СКАЗКИ `body > li`
(102 ) ПРИКЛЮЧЕНИЯ МОИ ГОСТИ Мавр сделал свое дело. Мавр может гулять… `body > li`
Цифровой архив Иннокентия Анненского `td > small > noindex > li`
Андрей Платонов. Энциклопедия творчества `td > small > noindex > li`
Архив В.И.Вернадского `td > small > noindex > li`
Михаил Анчаров: официальный сайт `td > small > noindex > li`
Дмитрий Горчев: официальный сайт `td > small > noindex > li`
Андрей Лазарчук, Ирина Андронати: официальный сайт `td > small > noindex > li`
Лоис МакМастер Буджолд на "Лавке Миров" `td > small > noindex > li`
Итало Кальвино "Невидимые города" `td > small > noindex > li`
Игорь Губерман: неофициальный сайт `td > small > noindex > li`
Дмитрий Сухарев: официальный сайт `td > small > noindex > li`
Владимир Болотин: официальный сайт `td > small > noindex > li`
Militera - Военная литература `td > small > noindex > li`
Книжная полка Вадима Ершова `td > small > noindex > li`
Архивы звукового журнала "Кругозор" `td > small > noindex > li`
Библиотека леопарда Веши `td > small > noindex > li`
Библиотека "Fort/Da" Славы Янко `td > small > noindex > li`
Библиотека Ихтика: Философия `td > small > noindex > li`
Библиотека "Артефакт" `td > small > noindex > li`
"Альтернатива": История, футурология `td > small > noindex > li`
Жизнь Замечательных Людей `td > small > noindex > li`
Библиотека "Социология, Психология, Управление" `td > small > noindex > li`
Архив переводов "TarraNova" `td > small > noindex > li`
Приватное собрание книг LDN-KNIGI `td > small > noindex > li`
Фотоархивы `td > small > noindex > li`
Журнал "Млечный Путь" (ред.П.Амнуэль) `td > small > noindex > li`
Литературный журнал "Век на не вечер" `td > small > noindex > li`
Альманах поэзии "Буквица" `td > small > noindex > li`
Детская газета "Бермудский треугольник `td > small > noindex > li`
История отечественной авиации `td > small > noindex > li`
Армия-Дедовщина-Общество `td > small > noindex > li`
Словарь литературоведческих терминов `td > small > noindex > li`
IPH: International Publishing House `td > small > noindex > li`
Psi-Project: детская психология `td > small > noindex > li`
IT-History: История IT-технологий в СССР и России `td > small > noindex > li`
КБ "Сталкер": Байдарки М.Чернецкого `td > small > noindex > li`
Школа Татьяны Голубковой `td > small > noindex > li`
Юрий Ревич: персональная страница `td > small > noindex > li`
Ми Суонг "И твоя война" `td > small > noindex > li`
Олег Головкин "Полиэтиленовый каякер" `td > small > noindex > li`
Евгений Крылов: IT-страница `tbody > tr > td > li`
(240 ) СОВЕТСКАЯ ФАНТАСТИКА `body > li`
(191 ) ЗАРУБЕЖНАЯ ФАНТАСТИКА `body > li`
( 40 ) Russian sci-fi in English translation `body > li`
( 17 ) СОЦИАЛИСТИЧЕСКАЯ ФАНТАСТИКА `body > li`
( 66 ) ЗАРУБЕЖНАЯ ФАНТАСТИКА РОССЫПЬЮ `body > li`
( 94 ) Клуб любителя фантастики `body > li`
( 17 ) БЮРО ПЕРЕВОДОВ И ПЕРЕВОДЧИКОВ ИСТОРИЯ Побольше историй красивых и… `body > li`
( 40 ) ИСТОРИЧЕСКИЕ РОМАНЫ(отечественные) `body > li`
( 16 ) ИСТОРИЧЕСКИЕ РОМАНЫ(переводы) `body > li`
(112 ) МЕМУАРЫ И ЖИЗНЕОПИСАНИЯ `body > li`
(129 ) ИСТОРИЯ (наука и гипотезы) ДЕТЕКТИВЫ "Было бы величайшей ошибкой … `body > li`
( 66 ) РУССКИЙ ДЕТЕКТИВ И БОЕВИК `body > li`
( 57 ) ПЕРЕВОДНЫЕ ДЕТЕКТИВЫ `body > li`
( 69 ) 30 Mar Законы, акты, постановления КУЛЬТУРА, ...СОФИЯ, ...ЛОГИЯ... `body > li`
( 59 ) КУЛЬТУРА `body > li`
( 72 ) ФИЛОСОФИЯ `body > li`
( 64 ) ЙОГА `body > li`
( 81 ) ЭЗОТЕРИКА `body > li`
( 9 ) АСТРОЛОГИЯ `body > li`
( 8 ) РЕЛИГИОЗНАЯ ЛИТЕРАТУРА `body > li`
( 20 ) "Диалектические" книги `body > li`
(176 ) ПОЛИТОЛОГИЯ `body > li`
( 70 ) ПСИХОЛОГИЯ `body > li`
( 39 ) Нейролингвистическое программирование `body > li`
( 68 ) Руководства по прикладной психологии НАУЧНАЯ И УЧЕБНИКИ `body > li`
( 36 ) Взрослым о детях `body > li`
( 45 ) Научно-популярная литература `body > li`
( 6 ) Словари `body > li`
( 32 ) Учебники `body > li`
( 18 ) Природоведение и зоология `body > li`
( 19 ) Медицинская литература `body > li`
( 5 ) Библиография (наука такая) `body > li`
( 7 ) Спортивная литература `body > li`
( 27 ) Бухучет, финансы, банки UNIX'ОИДАМ ВСЕХ СТРАН "Есть многое на све… `body > li`
(159 ) 15 Mar Справочник начинающего Unix'иста `body > li`
( 6 ) VMware, vSphere, ESX `body > li`
( 55 ) Книги по Unix на русском `body > li`
(190 ) Клуб Настоящих Unix'оидов `body > li`
(539 ) Записки Web-мастера `body > li`
(157 ) Security и firewall'ы `body > li`
( 20 ) Технические руководства `body > li`
( 24 ) УЧЕБНИКИ ПО ПРОГРАММИРОВАНИЮ, C, C++ ОЖИДАЕТСЯ They might or they… `body > li`
С 1994 года библиотека не меняла дизайн. И не планирует. Спец-guestbook: Аннота… `body > li`
А здесь пожелания читателей библиотеки БИБЛИОТЕКАРЮ, СЛУЖЕБНОЕ "Единственное, … `body > li`
Литературные архивы в Интернетe `body > li`
Электронные библиотеки, объединяйтесь `body > li`
Разнообразные тексты `body > li`
Если у Вас есть что положить в "мою библиотеку" `body > li`
О правах, разрешениях, copyright СТАТИСТИКА Big browser is watching you. Старш… `body > li`

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

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
"RecSelf" - служба пользовательских торговых объявлений "куплю/продам" `body > a`
(163 ) Мемуары Чеченской войны `body > li > a`
(797 ) Библиотека изобразительных искусств `body > li > a`
(9897) Литературный журнал "Самиздат" `body > li > a`
(8467) MP3: "Музыкальный хостинг" `body > li > a`
(847 ) Зарубежные впечатления "Заграница" `body > li > a`
Цифровой архив Иннокентия Анненского `small > noindex > li > a`
Андрей Платонов. Энциклопедия творчества `small > noindex > li > a`
Архив В.И.Вернадского `small > noindex > li > a`
Михаил Анчаров: официальный сайт `small > noindex > li > a`
Дмитрий Горчев: официальный сайт `small > noindex > li > a`
Андрей Лазарчук, Ирина Андронати: официальный сайт `small > noindex > li > a`
Лоис МакМастер Буджолд на "Лавке Миров" `small > noindex > li > a`
Итало Кальвино "Невидимые города" `small > noindex > li > a`
Игорь Губерман: неофициальный сайт `small > noindex > li > a`
Дмитрий Сухарев: официальный сайт `small > noindex > li > a`
Владимир Болотин: официальный сайт `small > noindex > li > a`
Militera - Военная литература `small > noindex > li > a`
Книжная полка Вадима Ершова `small > noindex > li > a`
Архивы звукового журнала "Кругозор" `small > noindex > li > a`
Библиотека леопарда Веши `small > noindex > li > a`
Библиотека "Fort/Da" Славы Янко `small > noindex > li > a`
Библиотека Ихтика: Философия `small > noindex > li > a`
Библиотека "Артефакт" `small > noindex > li > a`
"Альтернатива": История, футурология `small > noindex > li > a`
Жизнь Замечательных Людей `small > noindex > li > a`
Библиотека "Социология, Психология, Управление" `small > noindex > li > a`
Архив переводов "TarraNova" `small > noindex > li > a`
Приватное собрание книг LDN-KNIGI `small > noindex > li > a`
Фотоархивы `small > noindex > li > a`
Журнал "Млечный Путь" (ред.П.Амнуэль) `small > noindex > li > a`
Литературный журнал "Век на не вечер" `small > noindex > li > a`
Альманах поэзии "Буквица" `small > noindex > li > a`
Детская газета "Бермудский треугольник `small > noindex > li > a`
История отечественной авиации `small > noindex > li > a`
Армия-Дедовщина-Общество `small > noindex > li > a`
Словарь литературоведческих терминов `small > noindex > li > a`
IPH: International Publishing House `small > noindex > li > a`
Psi-Project: детская психология `small > noindex > li > a`
IT-History: История IT-технологий в СССР и России `small > noindex > li > a`
КБ "Сталкер": Байдарки М.Чернецкого `small > noindex > li > a`
Школа Татьяны Голубковой `small > noindex > li > a`
Юрий Ревич: персональная страница `small > noindex > li > a`
Ми Суонг "И твоя война" `small > noindex > li > a`
Олег Головкин "Полиэтиленовый каякер" `small > noindex > li > a`
Евгений Крылов: IT-страница `td > li > small > a`
Литературные архивы в Интернетe `body > li > a`
Электронные библиотеки, объединяйтесь `body > li > a`
Разнообразные тексты `body > li > a`
Если у Вас есть что положить в "мою библиотеку" `body > li > a`
О правах, разрешениях, copyright `body > li > a`

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.

○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>`

●Input buttons have discernible text.

●Document has a `<title>` element

●Links are distinguishable without relying on color.

●Links have a discernible name

●Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.

●Heading elements appear in a sequentially-descending order

●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

○Buttons have an accessible name

○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 a valid value for its `[lang]` attribute

○`<html>` element has an `[xml:lang]` attribute with the same base language as the `[lang]` attribute.

○`<input type="image">` elements have `[alt]` text

○Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).

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

○`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.

○`<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

○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.

Best Practices

Trust and Safety

All sites should be protected with HTTPS, even ones that don't handle sensitive data. This includes avoiding mixed content, where some resources are loaded over HTTP despite the initial request being served over HTTPS. HTTPS prevents intruders from tampering with or passively listening in on the communications between your app and your users, and is a prerequisite for HTTP/2 and many new web platform APIs. Learn more about HTTPS.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Insecure URL	Request Resolution
counter.rambler.ru/top100.cnt?59291	Automatically upgraded to HTTPS
top.list.ru/counter?id=105282;t=99	Automatically upgraded to HTTPS
top100-images.rambler.ru/top100/b0.gif	Automatically upgraded to HTTPS
u083.69.spylog.com/cnt?p=0	Automatically upgraded to HTTPS

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.

Source	Description
top.list.ru/counter?id=105282;t=99	`Failed to load resource: net::ERR_CERT_COMMON_NAME_INVALID`
top100-images.rambler.ru/top100/b0.gif	`Failed to load resource: net::ERR_CONNECTION_RESET`
u083.69.spylog.com/cnt?p=0	`Failed to load resource: net::ERR_NAME_NOT_RESOLVED`
counter.rambler.ru/top100.cnt?59291	`Failed to load resource: net::ERR_TIMED_OUT`

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Issue type
Mixed content

●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

●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

●Page has valid source maps

○Redirects HTTP traffic to HTTPS

○Detected JavaScript libraries

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

Meta descriptions may be included in search results to concisely summarize page content. Learn more about the meta description.

Why this matters

Performance issues directly impact user engagement and conversion rates.

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
body > pre > center > img `body > pre > center > 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

●Page has successful HTTP status code

●Links have descriptive text

●Links are crawlable

●robots.txt is valid

●Document has a valid `hreflang`

○Document has a valid `rel=canonical`