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.

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
/signals/config/680170127291179?v=2.9.303&r=stable&domain...	1200.0 s	127.3 KiB
connect.facebook.net/en_US/fbevents.js	1200.0 s	96.6 KiB
static.hotmart.com/fonts/v1/hotmart-sans/hotmart-sans-regular.woff2	0.0 ms	44.1 KiB
static.hotmart.com/fonts/v1/hotmart-sans/hotmart-sans-bold.woff2	0.0 ms	43.9 KiB
static.hotmart.com/fonts/v1/hotmart-display/hotmart-display-regular.woff2	0.0 ms	35.7 KiB
static.auth.hotmart.com/cookie-policy/app.js	0.0 ms	27.3 KiB
static.auth.hotmart.com/cookie-policy/cosmos_alert.js	0.0 ms	21.7 KiB
scripts.clarity.ms/0.8.59/clarity.js	86400.0 s	26.2 KiB
snap.licdn.com/li.lms-analytics/insight.min.js	74143.0 s	18.7 KiB
bat.bing.com/p/insights/s/0.8.59	86400.0 s	15.6 KiB
hotmart-tracking-manager.hotmart.com/hotmart-tracking-manager.min.js	0.0 ms	3.5 KiB
/collect?v=2&fmt=js&pid=8265329&time=1776891007502&li_ads...	0.0 ms	452 B
/tr/?id=680170127291179&ev=PageView&dl=https%3A%2F%2Fhotm...	0.0 ms	16 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:55.138 source:map[type:text value:[unattributed]]]]

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:1655.6149997558593 label:Time to first byte subpart:timeToFirstByte] map[duration:21.127000244140625 label:Resource load delay subpart:resourceLoadDelay] map[duration:744.563 label:Resource load duration subpart:resourceLoadDuration] map[duration:123.403 label:Element render delay subpart:elementRenderDelay]]

lhId: page-0-IMG

nodeLabel: No centro da imagem há uma jovem mulher com pele escura e cabelo com tranças, u…

path: 1,HTML,1,BODY,2,MAIN,0,DIV,1,DIV,0,DIV,0,PICTURE,3,IMG

selector: div > div#hero-monks > picture > img.bg-image

snippet: <img alt="No centro da imagem há uma jovem mulher com pele escura e cabelo com tranç…" fetchpriority="high" loading="eager" width="720" height="1600" decoding="async" data-nimg="1" class="bg-image" style="color:transparent" srcset="https://hotmart.com/static/app-hotmart-next/images/monks-home/monks-hero-m…" src="https://hotmart.com/static/app-hotmart-next/images/monks-home/monks-hero-m…">

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

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
Vídeo simulando a criação de um curso na Hotmart `div.monks-container > div.video-wrapper > div > img.thumb`	/static/app-hotmart-next/images/monks-home/ONBOARDING_CRI...	869.8 KiB	839.9 KiB
Photo of a smartphone displaying a payment screen, with food on the left includ… `div.swiper-slide > div.boost-sales-card > div.boost-sales-card-image > img`	/static/app-hotmart-next/images/monks-home/boost-sales/en...	131.7 KiB	86.0 KiB

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
hotmart.com/static/app-hotmart-next/_next/static/css/d604c9c9bdd4a1ff.css	1.5 KiB
hotmart.com/static/app-hotmart-next/_next/static/css/16a9e445de993f03.css	1.5 KiB
hotmart.com/static/app-hotmart-next/_next/static/css/316023ba1568f012.css	1023 B
hotmart.com/static/app-hotmart-next/_next/static/css/0ec3bfba4c6ef170.css	788 B
hotmart.com/static/app-hotmart-next/_next/static/css/18b9b402b16470ae.css	488 B
hotmart.com/static/app-hotmart-next/_next/static/css/c9d3ab6423b25f40.css	1.2 KiB
hotmart.com/static/app-hotmart-next/_next/static/css/4408186c457dffe2.css	11.9 KiB	179 ms
hotmart.com/static/app-hotmart-next/_next/static/css/2f84789b414712fb.css	1.0 KiB
hotmart.com/static/app-hotmart-next/_next/static/css/22920c3f96d8a292.css	987 B
hotmart.com/static/app-hotmart-next/_next/static/css/106cef37356e04ca.css	1.2 KiB
hotmart.com/static/app-hotmart-next/_next/static/css/8109f3fa2bcc9a27.css	2.8 KiB
hotmart.com/static/app-hotmart-next/_next/static/css/80e61e8bf2a61903.css	973 B
hotmart.com/static/app-hotmart-next/_next/static/css/9ee856fd1b9d571d.css	1.2 KiB
hotmart.com/static/app-hotmart-next/_next/static/css/38e22cd1c9bdd77c.css	1.0 KiB
hotmart.com/static/app-hotmart-next/_next/static/css/27d8defc27821724.css	794 B
hotmart.com/static/app-hotmart-next/_next/static/css/cedc5736a9392f5c.css	463 B

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: 1.4 s

URL	Time Spent
hotmart.com/	1.4 s
hotmart.com/en	0.0 ms

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: 866 ms

URL	Time Spent
hotmart.com/en	966 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 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: 150 ms 436.2 KiB

URL	Transfer Size	Est Savings
hotmart.com/static/app-hotmart-next/_next/static/chunks/6070-f2f387f58945efe7.js	175.6 KiB	92.8 KiB
www.googletagmanager.com/gtm.js?id=GTM-TT4GHQX	171.8 KiB	61.8 KiB
www.googletagmanager.com/gtag/js?id=DC-14189797&cx=c&gtm=4e64k0h1	129.2 KiB	59.7 KiB
analytics.tiktok.com/i18n/pixel/static/main.MWE0ZWQ3ZWQwMQ.js	109.1 KiB	56.5 KiB
www.googletagmanager.com/gtag/js?id=G-GQH2V1F11Q	166.6 KiB	56.2 KiB
/signals/config/680170127291179?v=2.9.303&r=stable&domain...	127.2 KiB	39.3 KiB
/static/app-hotmart-next/_next/static/chunks/1e4a01de-a7d...	37.4 KiB	35.9 KiB
connect.facebook.net/en_US/fbevents.js	96.5 KiB	34.1 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
hotmart.com/en	4.4 s	31 ms	72 ms
hotmart.com/static/app-hotmart-next/_next/static/chunks/6070-f2f387f58945efe7.js	2.4 s	2.1 s	82 ms
Unattributable	1.1 s	262 ms	0.0 ms
www.googletagmanager.com/gtag/js?id=G-GQH2V1F11Q	822 ms	725 ms	79 ms
static.auth.hotmart.com/cookie-policy/app.js	578 ms	538 ms	16 ms
scripts.clarity.ms/0.8.59/clarity.js	464 ms	412 ms	11 ms
/static/app-hotmart-next/_next/static/chunks/fd9d1056-5d8...	346 ms	98 ms	31 ms
/signals/config/680170127291179?v=2.9.303&r=stable&domain...	343 ms	284 ms	58 ms
analytics.tiktok.com/i18n/pixel/static/main.MWE0ZWQ3ZWQwMQ.js	303 ms	239 ms	62 ms
static.auth.hotmart.com/cookie-policy/cosmos_alert.js	245 ms	177 ms	32 ms
www.googletagmanager.com/gtm.js?id=GTM-TT4GHQX	218 ms	144 ms	70 ms
connect.facebook.net/en_US/fbevents.js	208 ms	143 ms	63 ms
www.googletagmanager.com/gtag/js?id=DC-14189797&cx=c&gtm=4e64k0h1	208 ms	157 ms	50 ms
hotmart.com/static/app-hotmart-next/_next/static/chunks/9693-8d08f6d6aea21b39.js	136 ms	41 ms	14 ms
snap.licdn.com/li.lms-analytics/insight.min.js	106 ms	95 ms	7.5 ms
bat.bing.com/bat.js	104 ms	97 ms	7.5 ms
bat.bing.com/p/insights/s/0.8.59	98 ms	84 ms	6.2 ms
analytics.tiktok.com/i18n/pixel/static/identify_5cff1caf.js	80 ms	56 ms	23 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	5.8 s
Other	3.0 s
Style & Layout	1.4 s
Rendering	1.2 s
Script Parsing & Compilation	762 ms
Parse HTML & CSS	204 ms
Garbage Collection	98 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 reason	Failure type
Pages with cache-control:no-store header cannot enter back/forward cache.	Actionable
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

Minifying CSS files can reduce network payload sizes. Learn how to minify CSS.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 0.0 ms 29.2 KiB

URL	Transfer Size	Est Savings
.hot-container,.hot-container-fluid{display:flex;flex-direction:column;margin-left:auto; … } …	13.4 KiB	8.9 KiB
._w-auto{width:auto !important} …	9.1 KiB	6.1 KiB
._flex-row{flex-direction:row !important} …	7.4 KiB	4.8 KiB
._border{border:.0625rem solid #e6e9ed !important; … } …	7.2 KiB	4.6 KiB
:root,:host{--brand-primary-lightest:#fdece7;--brand-primary-lighter:#ff9377;--brand-primary-light:…	3.7 KiB	2.5 KiB
._line-height-sm{line-height:1 !important;line-height:var(--line-height-sm) !important} …	3.6 KiB	2.4 KiB

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: 0.0 ms 13.3 KiB

URL	Transfer Size	Est Savings
.hot-container,.hot-container-fluid{display:flex;flex-direction:column;margin-left:auto; … } …	13.4 KiB	13.3 KiB

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
/static/app-hotmart-next/images/monks-home/ONBOARDING_CRI...	870.2 KiB
hotmart.com/static/app-hotmart-next/_next/static/chunks/6070-f2f387f58945efe7.js	176.0 KiB
www.googletagmanager.com/gtm.js?id=GTM-TT4GHQX	172.1 KiB
www.googletagmanager.com/gtag/js?id=G-GQH2V1F11Q	166.6 KiB
/static/app-hotmart-next/images/monks-home/boost-sales/en...	132.1 KiB
www.googletagmanager.com/gtag/js?id=DC-14189797&cx=c&gtm=4e64k0h1	129.3 KiB
/signals/config/680170127291179?v=2.9.303&r=stable&domain...	127.3 KiB
analytics.tiktok.com/i18n/pixel/static/main.MWE0ZWQ3ZWQwMQ.js	109.8 KiB
connect.facebook.net/en_US/fbevents.js	96.6 KiB
hotmart.com/en	92.3 KiB

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

●LCP request discovery

●Modern HTTP

●Optimize viewport for mobile

●Minify JavaScript

●User Timing marks and measures 18 user timings

●Avoid long main-thread tasks 20 long tasks found

●Avoid non-composited animations 7 animated elements found

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

●Network Requests

●Network Round Trip Times 250 ms

●Server Backend Latencies 840 ms

●Tasks

●Diagnostics

●Metrics

●Screenshot Thumbnails

●Final Screenshot

●Script Treemap Data

●Resources Summary

○INP breakdown

○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
Cookie Notice `div > div.cookie-alert-container-body-text > p._text-gray-500 > a`
OK `div.cookie-alert-container > div > div.cookie-policy-footer > button.cookie-policy-button`
Sign up `div > ul > li > a.primary-button`
Sign Up Now `div.hero--content > div.hero--left > div.button-wrapper > a.primary-button`
Start selling more `div.monks-container > div.boost-sales-text-and-main-slide > div.text-with-button-container > a.primary-button`
Gamification and personalization: make your content irresistible. `div.enchant-card > div.enchant-card-texts > button > h4.enchant-card-title`
AI Support that learns from you, sounds like you, and never sleeps. `div.enchant-card > div.enchant-card-texts > button > h4.enchant-card-title`
Sign up now `div.enchant-background > div.monks-container > div.enchant-text-content-container > a.primary-button`
Start now `div.cta-view-container > div.cta-view-introduction > div.cta-view-introduction-bottom > a.primary-button`
Hotmart — 2011-2026 © All rights reserved `div.footer__container > div.footer__area-3 > div.footer__left-side > div.footer__copyright`
Launch Pad Technology, Services and Payments Ltd. CNPJ No. 13.427.325/0001-05 A… `div.footer__container > div.footer__area-3 > div.footer__left-side > div.footer__corporate`

These are opportunities to improve the legibility of your content.

○Interactive controls are keyboard focusable

○Interactive elements indicate their purpose and state

○The page has a logical tab order

○Visual order on the page follows DOM order

○User focus is not accidentally trapped in a region

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

○HTML5 landmark elements are used to improve navigation

○Offscreen content is hidden from assistive technology

○Custom controls have associated labels

○Custom controls have ARIA roles

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

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

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

●`[role]` values are valid

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

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

●Buttons have an accessible name

●Image elements have `[alt]` attributes

●`[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

●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

●Touch targets have sufficient size and spacing.

●Heading elements appear in a sequentially-descending order

●Document has a main landmark.

●Deprecated ARIA roles were not used

●`<video>` elements contain a `<track>` element with `[kind="captions"]`

●Elements with visible text labels have matching accessible names.

○`[accesskey]` values are unique

○`button`, `link`, and `menuitem` elements have accessible names

○Elements with `role="dialog"` or `role="alertdialog"` have accessible names.

○ARIA 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

○Select elements have associated label elements.

○Skip links are focusable.

○No element has a `[tabindex]` value greater than 0

○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

○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.

○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

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 / Warning	Source
AttributionReporting	snap.licdn.com/li.lms-analytics/insight.min.js

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
hotmart.com/en	`Access to fetch at 'https://observability.hotmart.com/config-files/5c28724d34c45b45c25a0269be9daa69.json' from origin 'https://hotmart.com' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.`
hotmart.com/static/app-hotmart-next/_next/static/chunks/6070-f2f387f58945efe7.js line 489, col 12458	`dataGtmElement not found. Please inform dataGtmElement or use direct google tag manager`
observability.hotmart.com/config-files/5c28724d34c45b45c25a0269be9daa69.json	`Failed to load resource: net::ERR_FAILED`

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	Map URL
hotmart.com/static/app-hotmart-next/_next/static/chunks/6070-f2f387f58945efe7.js
static.auth.hotmart.com/cookie-policy/cosmos_alert.js	static.auth.hotmart.com/cookie-policy/cosmos_alert.js.map
static.auth.hotmart.com/cookie-policy/app.js	static.auth.hotmart.com/cookie-policy/app.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

●Serves images with appropriate resolution

●Page has the HTML doctype

●Properly defines charset

●No issues in the `Issues` panel in Chrome Devtools

●Ensure CSP is effective against XSS attacks

●Ensure proper origin isolation with COOP

●Mitigate DOM-based XSS with Trusted Types

●Detected JavaScript libraries

○Redirects HTTP traffic to HTTPS

○Use a strong HSTS policy

○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

hreflang links tell search engines what version of a page they should list in search results for a given language or region. Learn more about `hreflang`.

Why this matters

Performance issues directly impact user engagement and conversion rates.


`head > link`
`Link: <https://hotmart.com/mx>; rel="alternate"; hreflang="mx"`

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 have descriptive text

●Links are crawlable

●robots.txt is valid

●Image elements have `[alt]` attributes

●Document has a valid `rel=canonical`