C — https://supercell.com | BeaverCheck Audit

Site Health

Score: 76 / 100

Based on 8 categories, 0 sections

Decent speed, but optimizing further could improve engagement.

Several missing protections leave your users and data exposed.

Several issues make your site difficult for assistive technology users.

Well-optimized for search — your content is discoverable.

Solid infrastructure — fast server responses across the board.

Mostly compliant — a few items need attention.

Rich content metadata — your pages look great everywhere.

Heavier than average — reducing page weight saves energy and bandwidth.

How is this calculated?

The overall score is a weighted average of individual category scores. Categories with more impact on user experience and security carry more weight.

Performance 25%Security 25%Accessibility 15%SEO 10%Infrastructure 10%Compliance 8%Content 5%Sustainability 2%

Weights reflect general web best practices. Individual needs may differ.

How the composite score is calculated

How you compare

Amazon Route 53 sites average 72

At average

Better than 81% of Amazon Route 53 sites See full Amazon Route 53 benchmark →

Framework sites average 75

At average

Better than 60% of Framework sites

Top Priorities (5)

Content-Security-Policy header is missing

Security gaps expose your site and users to attacks, eroding trust.

Security › Security Headers

HSTS header is missing

Security gaps expose your site and users to attacks, eroding trust.

Security › Security Headers

No Content-Security-Policy header found

Security gaps expose your site and users to attacks, eroding trust.

Security › Content Security Policy

Cross-Origin-Embedder-Policy header is missing

Security gaps expose your site and users to attacks, eroding trust.

Security › Security Headers

Cross-Origin-Opener-Policy header is missing

Security gaps expose your site and users to attacks, eroding trust.

Security › Security Headers

View fix priority matrix

Fix Priority Matrix

5 findings

Impact

Quick Wins

High impact, low effort — start here.

Strategic

High impact, requires investment.

Nothing in this quadrant — good news.

Easy Improvements

Small gains, minimal effort.

Nothing in this quadrant — good news.

Deprioritize

Low impact, high effort — do last.

Nothing in this quadrant — good news.

← Low effort High effort →

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Markdown

[![BeaverCheck](https://beavercheck.com/badge?url=https%3A%2F%2Fsupercell.com)](https://beavercheck.com/results/343aa289-c9e1-4d05-bd10-46419e19f070)

HTML

<a href="https://beavercheck.com/results/343aa289-c9e1-4d05-bd10-46419e19f070"><img src="https://beavercheck.com/badge?url=https%3A%2F%2Fsupercell.com" alt="BeaverCheck Score"></a>

Image URL

https://beavercheck.com/badge?url=https%3A%2F%2Fsupercell.com

This badge auto-updates with your latest scan result.

What fixing these means

Your site performs reasonably well, but a few targeted fixes could meaningfully improve results. Addressing the critical issues below would have the most immediate impact on your user trust.

5 security gaps detected — browsers may warn visitors about your site.

Conversion Barriers

1 critical 6 warning

7 barrier(s) likely increasing bounce by ~25%.

Speed (2)

Page takes 16.6s to load

+12% bounce

Users abandon at ~3s — you're 14.1s over the 2.5s threshold

Fix: Optimize render-blocking resources, preload the hero image, and compress images

High main-thread blocking time

+2% bounce

Page is non-interactive for 204ms after first paint

Fix: Defer third-party scripts and split large bundles

Trust (2)

No HSTS header

+1% bounce

Returning visitors are briefly exposed to downgrade attacks on first request

Fix: Set Strict-Transport-Security: max-age=31536000; includeSubDomains

No Content-Security-Policy header

+1% bounce

Higher XSS blast radius — one compromised script can exfiltrate the checkout form

Fix: Ship a reporting-only CSP first, then enforce once violations are clean

Content (2)

No structured data

+2% bounce

No rich-result eligibility in Google — lower SERP CTR vs competitors with stars and prices

Fix: Add JSON-LD for your page type (Product, Article, FAQPage, LocalBusiness, …)

Content is hard to read

+2% bounce

Graduate-level reading difficulty — limits the addressable audience for product or blog pages

Fix: Shorten sentences; replace jargon with plain language; target Flesch ease ≥60

Navigation (1)

No skip-to-content link

+1% bounce

Keyboard and screen-reader users must tab through the entire header on every page

Fix: Add a visible-on-focus <a href="#main">Skip to content</a> as the first focusable element

Preliminary CRO audit — each barrier links to the tab with detailed analysis.

Return on Investment

€213 investment → €0.77/month returns + EUR 120,500,000 risk avoided

Payback period: > 2 years First-year ROI: -96%

Investment

€213

2h · 5 findings

Monthly returns

€0.77 /mo

~€9.24 / year

Bandwidth savings €0.77

Regulatory risk avoided

EUR 120,500,000

if kept compliant

ePrivacy Directive EUR 100,000,000
GDPR EUR 20,000,000
EAA EUR 500,000

Figures combine localized regulatory fine ceilings, search/conversion value priced against local CPC, and bandwidth waste estimates. Results depend on implementation quality and audience composition. Not legal or financial advice.

Full methodology & sources

Estimated Remediation Cost

€213

2.5 developer hours at €85/hr

Based on European Union rates (€85/hr)

Quick wins

€213 5 fixes in ~150 minutes

Start here for the best return on investment

Cost by category

Cost by effort level

Adjust assumptions

Custom rate

€ /hr

Rates reflect fully-loaded developer cost including overhead

How developer rates are sourced

What Inaction Is Costing You

€10,041,667 / month at risk

~€120,500,009 / year if left unfixed

Compliance Risk

€120,500,000

ePrivacy DirectiveGDPREAA

No privacy policy link detected
GDPR: EUR 10,000 – EUR 20,000,000
Trackers detected but no cookie policy found
GDPR: EUR 5,000 – EUR 10,000,000
Trackers detected but no cookie policy found
GDPR: EUR 10,000 – EUR 20,000,000

+5 more

Bandwidth Waste

€0.77 /mo

10392.9 MB/mo × 0.074 EUR/GB

Optimize transfer: save ~1.0 MB per page load
Saves €0.77/mo

Compliance figures represent the statutory maximum fine for the most severe triggered category, capped per regulation — not the sum of per-finding penalties. Based on published regulatory fine ranges. This is not legal advice.

Compliance methodology · SEO assumptions · Bandwidth model

Your performance is already good — improvements may show diminishing returns

Monthly visitors

Unique monthly visitors from your analytics

Conversion rate (%)

Purchases, signups, or key actions

Avg. order value

Optional — for revenue estimation

additional conversions/month

more engaged visitors from reduced bounce

potential monthly revenue

Current bounce (est.)

After fixes (est.)

Estimated bounce reduction

Fix 3 critical issues to capture this value

How this is calculated

Based on Google/Deloitte research ("Milliseconds Make Millions") showing a ~7% bounce rate increase per additional second of LCP above the 2.5s "Good" threshold.

Your site's LCP: → estimated after fixes.

These are estimates based on industry research — actual results vary

Bounce-rate model & assumptions

Your data stays in your browser — nothing is sent to our servers

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Lighthouse Scores

Industry-standard audits powered by Google Lighthouse.

Performance

Accessibility

Best Practices

100

SEO

Core Web Vitals

Key metrics that affect user experience.

First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.

2.08 s

Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.

16.65 s

Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.

204 ms

Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.

0.000

Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.

2.71 s

Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.

17.27 s

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

Shipping ES5 transpiled code to modern browsers wastes bytes — every user with an evergreen browser pays for compatibility you don't need.

Learn more ▾

Most users today run browsers that natively support ES6+, async/await, optional chaining, and the rest of modern JavaScript. Transpiling to ES5 'just in case' adds 20-40% to your bundle for no benefit. Configure your build to target a modern browserslist, or ship a differential bundle pair (modern + legacy) with the module/nomodule pattern.

Source: Google web.dev / Lighthouse

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
cdn.cookielaw.org/scripttemplates/202401.2.0/otBannerSdk.js	86400.0 s	104.5 KiB
cdn.cookielaw.org/scripttemplates/otSDKStub.js	86400.0 s	9.1 KiB
accounts.supercell.com/sdk/sdk.js	1800.0 s	2.9 KiB

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:61.306 source:map[type:text value:[unattributed]]]]

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
	supercell.com/images/61b5640f837e6c83a51a7b6bc7c8b2ae/790/DSC04714.webp	194.0 KiB	142.4 KiB
Crazy Raccoon crowned champions at the Brawl Stars World Finals 2025 `div.Grid_full-8__23bPT > a > picture > img.articleGridList_thumbnail__LoEPl`	/images/4a0cdf1068282d0125c18813b7fb1f60/790/20251130_Ada...	174.1 KiB	122.4 KiB
Heroes and Squaddies Arrive in Squad Busters `div.Grid_full-8__23bPT > a > picture > img.articleGridList_thumbnail__LoEPl`	/images/6b860e6814faf09dd55ee4c4551f19ba/790/SB_SocialBan...	160.0 KiB	108.4 KiB
Brawl Stars’ Starr Park Turns Upside Down in Stranger Things Crossover `div.Grid_full-8__23bPT > a > picture > img.articleGridList_thumbnail__LoEPl`	/images/b28cd5cc8b8039a8f1a18111f4a7d76e/790/FINAL_-_1026...	140.6 KiB	89.0 KiB
Sonic the Hedgehog Enters the Squad Busters Universe `div.Grid_full-8__23bPT > a > picture > img.articleGridList_thumbnail__LoEPl`	/images/67891ac7c9dd6c3879db07366c7e377d/790/FINAL_keyart...	138.1 KiB	86.5 KiB
Frontpage Hero Mobile `main#main > div.HeroImage_heroContainer__ou_zO > picture > img.HeroImage_heroImage___Kx_A`	supercell.com/_next/static/media/frontpage_hero_mobile.4d86fbbf.webp	71.4 KiB	52.3 KiB
What We’ve Learned from Failures `div.Grid_full-8__23bPT > a > picture > img.articleGridList_thumbnail__LoEPl`	/images/1885de2a28dc176e143693130aeeb0eb/790/failosophy-w...	103.7 KiB	52.1 KiB
Boom Beach Is Playable on PC… Now! `div.Grid_full-8__23bPT > a > picture > img.articleGridList_thumbnail__LoEPl`	/images/8bb77883320f0956fcc5e2b0aa91e2ad/790/Boom_Beach_P...	99.6 KiB	48.0 KiB
Brawl Stars x Subway Surfers Has Arrived! `div.Grid_full-8__23bPT > a > picture > img.articleGridList_thumbnail__LoEPl`	/images/8aecb6a563472e69d488e04d0aead3d8/790/BS_SUBWAY_SU...	96.3 KiB	44.7 KiB
Squad Busters Development is Ending, Final Update in December 2025 `div.Grid_full-8__23bPT > a > picture > img.articleGridList_thumbnail__LoEPl`	/images/f78b607faf3e016e1c7c0edc5ecb6b3b/790/Squad_news_-...	91.3 KiB	39.7 KiB
Grow Together With Hay Day’s Neighborhood Event Featuring Lance Bass `div.Grid_full-8__23bPT > a > picture > img.articleGridList_thumbnail__LoEPl`	/images/ad5a77db0d6e3cabc68fb0d2fca9eed6/790/Hay-Day_Neig...	88.3 KiB	36.7 KiB
The Best Games Haven't Been Made Yet `div.Grid_full-8__23bPT > a > picture > img.articleGridList_thumbnail__LoEPl`	/images/a3ac74eb27c3da587c9576bb2a771d21/790/ilkkasBlogPo...	70.4 KiB	22.9 KiB
Inferno Dragon Is Finally Getting His Evolution In Clash Royale `div.Grid_full-8__23bPT > a > picture > img.articleGridList_thumbnail__LoEPl`	/images/d95ad7b6b85213ac130a28e64b2ba2e9/790/Inferno_Drag...	67.0 KiB	21.8 KiB
Clash Royale Partners With bbno$ For Baby Dragon Evolution Launch `div.Grid_full-8__23bPT > a > picture > img.articleGridList_thumbnail__LoEPl`	/images/fd6b1143b7fed93dbc8ce1dfd63abb06/790/CR_KeyArt_Ba...	62.5 KiB	20.3 KiB
Welcoming Drussila Hollanda as our new Head of New Games `div.Grid_full-8__23bPT > a > picture > img.articleGridList_thumbnail__LoEPl`	/images/42ee960724af6b9c9b7d82209aec399b/790/drussila-thu...	59.5 KiB	19.4 KiB
Stay Safe: Spotting Fake Supercell Store Websites `div.Grid_full-8__23bPT > a > picture > img.articleGridList_thumbnail__LoEPl`	supercell.com/images/61ffc9f559811af6d9a53b2d1bc7b6ad/790/IMG_8025.webp	37.4 KiB	12.2 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-4-IMG

nodeLabel: Frontpage Hero Mobile

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

selector: main#main > div.HeroImage_heroContainer__ou_zO > picture > img.HeroImage_heroImage___Kx_A

snippet: <img width="1440" height="1972" src="https://supercell.com/_next/static/media/frontpage_hero_mobile.4d86fbbf.we…" alt="Frontpage Hero Mobile" class="HeroImage_heroImage___Kx_A HeroImage_mobile__nJ35c HeroImage_tablet__Imygs">

HTTP/2 and HTTP/3 offer many benefits over HTTP/1.1, such as multiplexing. Learn more about using modern HTTP.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Protocol
supercell.com/	http/1.1

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

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

TTI

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

Multi-megabyte JavaScript bundles delay every interactive feature on the page.

Learn more ▾

This is the Lighthouse audit fired when too much JS is shipped relative to what executes. The fix isn't a config flag — it requires bundle analysis (webpack-bundle-analyzer, rollup-plugin-visualizer), splitting routes into chunks, lazy-loading off-screen components, and removing unused dependencies. Fundamentally different from minification: minifying reduces byte count, this reduces what's downloaded at all.

Source: Google web.dev / Lighthouse

Estimated savings: 1.2 s 304.8 KiB

URL	Transfer Size	Est Savings
supercell.com/_next/static/chunks/main-af617b05f1660d1b.js	322.1 KiB	181.0 KiB
cdn.cookielaw.org/scripttemplates/202401.2.0/otBannerSdk.js	104.3 KiB	66.4 KiB
supercell.com/_next/static/chunks/805-82b11073755d6082.js	89.8 KiB	57.3 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 17.0 KiB

URL	Transfer Size	Est Savings
#onetrust-banner-sdk{-ms-text-size-adjust:100%;-webkit-text-size-adjust:100%} …	17.1 KiB	17.0 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
supercell.com/_next/static/chunks/main-af617b05f1660d1b.js	322.5 KiB
supercell.com/images/61b5640f837e6c83a51a7b6bc7c8b2ae/790/DSC04714.webp	194.4 KiB
/images/4a0cdf1068282d0125c18813b7fb1f60/790/20251130_Ada...	174.5 KiB
supercell.com/_next/static/media/supercelltext_w_md.01ac8b8d.woff2	165.7 KiB
supercell.com/_next/static/media/miniPekka.7e91c758.webp	164.4 KiB
supercell.com/_next/static/media/supercelltext_w_rg.2d4de3c7.woff2	161.4 KiB
supercell.com/_next/static/media/supercelltext_w_bd.8c3b5392.woff2	160.5 KiB
/images/6b860e6814faf09dd55ee4c4551f19ba/790/SB_SocialBan...	160.4 KiB
/images/b28cd5cc8b8039a8f1a18111f4a7d76e/790/FINAL_-_1026...	141.0 KiB
/images/67891ac7c9dd6c3879db07366c7e377d/790/FINAL_keyart...	138.5 KiB

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

●Layout shift culprits

●Document request latency

●Optimize DOM size

●Font display

●LCP breakdown

●Network dependency tree

●Render blocking requests

●Optimize viewport for mobile

●Minify CSS

●Minify JavaScript

●User Timing marks and measures 10 user timings

●JavaScript execution time 1.0 s

●Minimizes main-thread work 1.9 s

●Avoid long main-thread tasks 6 long tasks found

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

●Page didn't prevent back/forward cache restoration

●Network Requests

●Network Round Trip Times 20 ms

●Server Backend Latencies 40 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 20 ms

●Avoid large layout shifts 1 layout shift found

○INP breakdown

○Avoid non-composited animations

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
WATCH VIDEO `main#main > div.HeroImage_heroContainer__ou_zO > div.HeroImage_heroText__upo5U > button.frontPage_bluePill__2Rujc`
BOOM BEACH `div#news > div.Grid_rowContainer__RAVMO > div.Grid_full-8__23bPT > p.articleGridList_description__YYAgr`
ILKKA’S LONG TEXTS `div#news > div.Grid_rowContainer__RAVMO > div.Grid_full-8__23bPT > p.articleGridList_description__YYAgr`
CAREERS `div#news > div.Grid_rowContainer__RAVMO > div.Grid_full-8__23bPT > p.articleGridList_description__YYAgr`
HAY DAY `div#news > div.Grid_rowContainer__RAVMO > div.Grid_full-8__23bPT > p.articleGridList_description__YYAgr`
GOOD STUFF `div#news > div.Grid_rowContainer__RAVMO > div.Grid_full-8__23bPT > p.articleGridList_description__YYAgr`
BRAWL STARS `div#news > div.Grid_rowContainer__RAVMO > div.Grid_full-8__23bPT > p.articleGridList_description__YYAgr`
CLASH ROYALE `div#news > div.Grid_rowContainer__RAVMO > div.Grid_full-8__23bPT > p.articleGridList_description__YYAgr`
SQUAD BUSTERS `div#news > div.Grid_rowContainer__RAVMO > div.Grid_full-8__23bPT > p.articleGridList_description__YYAgr`
BRAWL STARS `div#news > div.Grid_rowContainer__RAVMO > div.Grid_full-8__23bPT > p.articleGridList_description__YYAgr`
CLASH ROYALE `div#news > div.Grid_rowContainer__RAVMO > div.Grid_full-8__23bPT > p.articleGridList_description__YYAgr`
BRAWL STARS `div#news > div.Grid_rowContainer__RAVMO > div.Grid_full-8__23bPT > p.articleGridList_description__YYAgr`
PEOPLE `div#news > div.Grid_rowContainer__RAVMO > div.Grid_full-8__23bPT > p.articleGridList_description__YYAgr`
MO.CO `div#news > div.Grid_rowContainer__RAVMO > div.Grid_full-8__23bPT > p.articleGridList_description__YYAgr`
NEWS `div#news > div.Grid_rowContainer__RAVMO > div.Grid_full-8__23bPT > p.articleGridList_description__YYAgr`
SQUAD BUSTERS `div#news > div.Grid_rowContainer__RAVMO > div.Grid_full-8__23bPT > p.articleGridList_description__YYAgr`
CLASH ROYALE `div#news > div.Grid_rowContainer__RAVMO > div.Grid_full-8__23bPT > p.articleGridList_description__YYAgr`
ENTERTAINMENT & PARTNERSHIPS `div#news > div.Grid_rowContainer__RAVMO > div.Grid_full-8__23bPT > p.articleGridList_description__YYAgr`
SQUAD BUSTERS `div#news > div.Grid_rowContainer__RAVMO > div.Grid_full-8__23bPT > p.articleGridList_description__YYAgr`
GOOD STUFF `div#news > div.Grid_rowContainer__RAVMO > div.Grid_full-8__23bPT > p.articleGridList_description__YYAgr`
CLASH OF CLANS `div#news > div.Grid_rowContainer__RAVMO > div.Grid_full-8__23bPT > p.articleGridList_description__YYAgr`
NEWS ARCHIVE `div#news > div.Grid_rowContainer__RAVMO > div.articleGridList_bottomButton__URJ3m > a`
Join us to create games that excite and help our players around the world make … `div.frontPage_characterTextRow__xm1Dx > div.Grid_rowContainer__RAVMO > div.frontPage_textContainer__MxJRr > p.frontPage_text__cbTdy`

These are opportunities to improve the legibility of your content.

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
GAMES `div.frontPage_characterTextRow__xm1Dx > div.Grid_rowContainer__RAVMO > div.frontPage_textContainer__MxJRr > h3.frontPage_heading__1K_oF`

These are opportunities to improve keyboard navigation in your application.

○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 have a discernible name

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

●List items (`<li>`) are contained within `<ul>`, `<ol>` or `<menu>` parent elements

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

●Touch targets have sufficient size and spacing.

●Skip links are focusable.

●Document has a main landmark.

●Deprecated ARIA roles were not used

●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

○Links are distinguishable without relying on color.

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

○`<object>` elements have alternate text

○Select elements have associated label elements.

○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.

○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

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.

	URL	Displayed size	Actual size	Expected size
div.Header_menuButtonContainer__DYEYK > button#mobileMenuIcon > picture > img `div.Header_menuButtonContainer__DYEYK > button#mobileMenuIcon > picture > img`	supercell.com/_next/static/media/btn_mobile_menu.4597c82b.webp	100 x 200	100 x 200	150 x 300

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
supercell.com/en/	`Access to fetch at 'https://cdn.cookielaw.org/scripttemplates/202401.2.0/assets/otFlat.json' from origin 'https://supercell.com' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.`
cdn.cookielaw.org/scripttemplates/202401.2.0/assets/otFlat.json	`Failed to load resource: net::ERR_FAILED`
cdn.cookielaw.org/scripttemplates/202401.2.0/otBannerSdk.js line 6, col 234606	TypeError: Cannot read properties of undefined (reading 'html') at Yn.insertAlertHtml (https://cdn.cookielaw.org/scripttemplates/202401.2.0/otBannerSdk.js:7:234607) at s.initializeAlartHtmlAndHandler (https://cdn.cookielaw.org/scripttemplates/202401.2.0/otBannerSdk.js:7:288833) at ii.<anonymous> (https://cdn.cookielaw.org/scripttemplates/202401.2.0/otBannerSdk.js:7:423335) at Object.next (https://cdn.cookielaw.org/scripttemplates/202401.2.0/otBannerSdk.js:7:1920) at https://cdn.cookielaw.org/scripttemplates/202401.2.0/otBannerSdk.js:7:966 at new Promise (<anonymous>) at F (https://cdn.cookielaw.org/scripttemplates/202401.2.0/otBannerSdk.js:7:717) at ii.windowLoadBanner (https://cdn.cookielaw.org/scripttemplates/202401.2.0/otBannerSdk.js:7:422542) at HTMLHtmlElement.r (https://cdn.cookielaw.org/scripttemplates/202401.2.0/otBannerSdk.js:7:70144) at HTMLHtmlElement.n (https://supercell.com/_next/static/chunks/main-af617b05f1660d1b.js:103:65098) at i.trigger (https://cdn.cookielaw.org/scripttemplates/202401.2.0/otBannerSdk.js:7:70291) at ro.loadBanner (https://cdn.cookielaw.org/scripttemplates/202401.2.0/otBannerSdk.js:7:133986) at sr.LoadBanner (https://cdn.cookielaw.org/scripttemplates/202401.2.0/otBannerSdk.js:7:310544) at https://cdn.cookielaw.org/scripttemplates/202401.2.0/otBannerSdk.js:7:439084 at Object.next (https://cdn.cookielaw.org/scripttemplates/202401.2.0/otBannerSdk.js:7:1920) at n (https://cdn.cookielaw.org/scripttemplates/202401.2.0/otBannerSdk.js:7:771)

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
supercell.com/_next/static/chunks/main-af617b05f1660d1b.js

●Uses HTTPS

●Avoids deprecated APIs

●Avoids third-party cookies

●Allows users to paste into input fields

●Avoids requesting the geolocation permission on page load

●Avoids requesting the notification permission on page load

●Displays images with correct aspect ratio

●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 clickjacking with XFO or CSP

●Mitigate DOM-based XSS with Trusted Types

●Detected JavaScript libraries

○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`

Lighthouse Scores

Industry-standard audits powered by Google Lighthouse. — Desktop

Performance

Accessibility

Best Practices

100

SEO

Core Web Vitals

Key metrics that affect user experience. — Desktop

First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.

537 ms

Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.

2.63 s

Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.

20 ms

Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.

0.000

Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.

537 ms

Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.

2.71 s

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.

Why this matters

Shipping ES5 transpiled code to modern browsers wastes bytes — every user with an evergreen browser pays for compatibility you don't need.

Learn more ▾

Source: Google web.dev / Lighthouse

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.

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
Crazy Raccoon crowned champions at the Brawl Stars World Finals 2025 `div.Grid_full-8__23bPT > a > picture > img.articleGridList_thumbnail__LoEPl`	/images/4a0cdf1068282d0125c18813b7fb1f60/1681/20251130_Ad...	591.4 KiB	549.5 KiB
Brawl Stars’ Starr Park Turns Upside Down in Stranger Things Crossover `div.Grid_full-8__23bPT > a > picture > img.articleGridList_thumbnail__LoEPl`	/images/b28cd5cc8b8039a8f1a18111f4a7d76e/1681/FINAL_-_102...	411.8 KiB	369.8 KiB
Sonic the Hedgehog Enters the Squad Busters Universe `div.Grid_full-8__23bPT > a > picture > img.articleGridList_thumbnail__LoEPl`	/images/67891ac7c9dd6c3879db07366c7e377d/FINAL_keyart_-_S...	384.5 KiB	342.6 KiB
What We’ve Learned from Failures `div.Grid_full-8__23bPT > a > picture > img.articleGridList_thumbnail__LoEPl`	/images/1885de2a28dc176e143693130aeeb0eb/failosophy-web-c...	288.2 KiB	246.2 KiB
Brawl Stars x Subway Surfers Has Arrived! `div.Grid_full-8__23bPT > a > picture > img.articleGridList_thumbnail__LoEPl`	/images/8aecb6a563472e69d488e04d0aead3d8/1681/BS_SUBWAY_S...	270.7 KiB	237.9 KiB
Squad Busters Development is Ending, Final Update in December 2025 `div.Grid_full-8__23bPT > a > picture > img.articleGridList_thumbnail__LoEPl`	/images/f78b607faf3e016e1c7c0edc5ecb6b3b/1681/Squad_news_...	246.0 KiB	216.2 KiB
Grow Together With Hay Day’s Neighborhood Event Featuring Lance Bass `div.Grid_full-8__23bPT > a > picture > img.articleGridList_thumbnail__LoEPl`	/images/ad5a77db0d6e3cabc68fb0d2fca9eed6/Hay-Day_Neighbor...	248.5 KiB	210.7 KiB
Boom Beach Is Playable on PC… Now! `div.Grid_full-8__23bPT > a > picture > img.articleGridList_thumbnail__LoEPl`	/images/8bb77883320f0956fcc5e2b0aa91e2ad/Boom_Beach_PC_La...	222.1 KiB	188.3 KiB
Welcoming Drussila Hollanda as our new Head of New Games `div.Grid_full-8__23bPT > a > picture > img.articleGridList_thumbnail__LoEPl`	supercell.com/images/42ee960724af6b9c9b7d82209aec399b/drussila-thumbnail.webp	166.9 KiB	141.5 KiB
Clash Royale Partners With bbno$ For Baby Dragon Evolution Launch `div.Grid_full-8__23bPT > a > picture > img.articleGridList_thumbnail__LoEPl`	/images/fd6b1143b7fed93dbc8ce1dfd63abb06/1681/CR_KeyArt_B...	157.1 KiB	138.1 KiB
The Best Games Haven't Been Made Yet `div.Grid_full-8__23bPT > a > picture > img.articleGridList_thumbnail__LoEPl`	/images/a3ac74eb27c3da587c9576bb2a771d21/ilkkasBlogPost_h...	158.5 KiB	134.4 KiB
Inferno Dragon Is Finally Getting His Evolution In Clash Royale `div.Grid_full-8__23bPT > a > picture > img.articleGridList_thumbnail__LoEPl`	supercell.com/images/d95ad7b6b85213ac130a28e64b2ba2e9/Inferno_Dragon_1130.webp	138.0 KiB	117.1 KiB
Supercell game characters `main#main > div.HeroImage_heroContainer__ou_zO > picture > img.HeroImage_heroImage___Kx_A`	supercell.com/_next/static/media/frontpage_hero.8bc64969.webp	106.9 KiB	91.1 KiB
Stay Safe: Spotting Fake Supercell Store Websites `div.Grid_full-8__23bPT > a > picture > img.articleGridList_thumbnail__LoEPl`	supercell.com/images/61ffc9f559811af6d9a53b2d1bc7b6ad/IMG_8025.webp	78.5 KiB	66.6 KiB
Clash Royale is Rolling Out Regional Pricing – Globally `div.Grid_full-8__23bPT > a > picture > img.articleGridList_thumbnail__LoEPl`	supercell.com/images/db7bf889a9b6fad05cc2d896d49476a6/store-thumbnail.webp	23.4 KiB	19.8 KiB
Exciting Update From mo.co Co-founder, Luna `div.Grid_full-8__23bPT > a > picture > img.articleGridList_thumbnail__LoEPl`	supercell.com/images/82ce36c5b5ca5c0c08efe35adafeaf80/Untitled-2.webp	19.9 KiB	16.8 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-12-IMG

nodeLabel: Supercell game characters

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

selector: main#main > div.HeroImage_heroContainer__ou_zO > picture > img.HeroImage_heroImage___Kx_A

snippet: <img width="3533" height="1528" src="https://supercell.com/_next/static/media/frontpage_hero.8bc64969.webp" alt="Supercell game characters" class="HeroImage_heroImage___Kx_A HeroImage_desktop__Zr37m">

HTTP/2 and HTTP/3 offer many benefits over HTTP/1.1, such as multiplexing. Learn more about using modern HTTP.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Protocol
supercell.com/	http/1.1

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
accounts.supercell.com/sdk/sdk.js	1800.0 s	2.8 KiB

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

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

TTI

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

Multi-megabyte JavaScript bundles delay every interactive feature on the page.

Learn more ▾

Source: Google web.dev / Lighthouse

Estimated savings: 160 ms 431.9 KiB

URL	Transfer Size	Est Savings
supercell.com/_next/static/chunks/main-af617b05f1660d1b.js	322.1 KiB	182.6 KiB
supercell.com/_next/static/chunks/805-82b11073755d6082.js	89.8 KiB	58.0 KiB
supercell.com/_next/static/chunks/9647-14ec58b581def33a.js	43.1 KiB	38.9 KiB
supercell.com/_next/static/chunks/4413-c25b5ff224c20d00.js	55.9 KiB	37.7 KiB
/_next/static/chunks/pages/en/careers/why-you-might-love-...	43.7 KiB	28.1 KiB
supercell.com/_next/static/chunks/pages/en/careers-aa1f78548106cc96.js	31.1 KiB	22.8 KiB
/_next/static/chunks/pages/en/careers/joining-supercell-a...	29.8 KiB	22.1 KiB
/_next/static/chunks/pages/en/careers/our-offices-408c0dd...	29.8 KiB	21.6 KiB
supercell.com/_next/static/chunks/pages/en/safe-fair-play-96bae49df148b64b.js	31.2 KiB	20.1 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
supercell.com/images/61b5640f837e6c83a51a7b6bc7c8b2ae/1681/DSC04714.webp	627.6 KiB
/images/4a0cdf1068282d0125c18813b7fb1f60/1681/20251130_Ad...	591.9 KiB
/images/b28cd5cc8b8039a8f1a18111f4a7d76e/1681/FINAL_-_102...	412.2 KiB
/images/6b860e6814faf09dd55ee4c4551f19ba/SB_SocialBanners...	392.8 KiB
/images/67891ac7c9dd6c3879db07366c7e377d/FINAL_keyart_-_S...	385.0 KiB
supercell.com/_next/static/chunks/main-af617b05f1660d1b.js	322.5 KiB
/images/443ac43b1c7450ce1ad55668e3d08cf7/1681/WWE_x_Clash...	292.6 KiB
/images/1885de2a28dc176e143693130aeeb0eb/failosophy-web-c...	288.6 KiB
/images/8aecb6a563472e69d488e04d0aead3d8/1681/BS_SUBWAY_S...	271.1 KiB
/images/ad5a77db0d6e3cabc68fb0d2fca9eed6/Hay-Day_Neighbor...	248.9 KiB

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

●Max Potential First Input Delay 90 ms

●Layout shift culprits

●Document request latency

●Optimize DOM size

●Font display

●Forced reflow

●LCP breakdown

●Network dependency tree

●Render blocking requests

●Optimize viewport for mobile

●Minify CSS

●Minify JavaScript

●Reduce unused CSS

●User Timing marks and measures 10 user timings

●JavaScript execution time 0.3 s

●Minimizes main-thread work 0.6 s

●Avoid long main-thread tasks 2 long tasks found

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

●Page didn't prevent back/forward cache restoration

●Network Requests

●Network Round Trip Times 20 ms

●Server Backend Latencies 30 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 20 ms

●Avoid large layout shifts 1 layout shift found

○INP breakdown

○Avoid non-composited animations

Accessibility

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
WATCH VIDEO `main#main > div.HeroImage_heroContainer__ou_zO > div.HeroImage_heroText__upo5U > button.frontPage_bluePill__2Rujc`
BOOM BEACH `div#news > div.Grid_rowContainer__RAVMO > div.Grid_full-8__23bPT > p.articleGridList_description__YYAgr`
ILKKA’S LONG TEXTS `div#news > div.Grid_rowContainer__RAVMO > div.Grid_full-8__23bPT > p.articleGridList_description__YYAgr`
CAREERS `div#news > div.Grid_rowContainer__RAVMO > div.Grid_full-8__23bPT > p.articleGridList_description__YYAgr`
HAY DAY `div#news > div.Grid_rowContainer__RAVMO > div.Grid_full-8__23bPT > p.articleGridList_description__YYAgr`
GOOD STUFF `div#news > div.Grid_rowContainer__RAVMO > div.Grid_full-8__23bPT > p.articleGridList_description__YYAgr`
BRAWL STARS `div#news > div.Grid_rowContainer__RAVMO > div.Grid_full-8__23bPT > p.articleGridList_description__YYAgr`
CLASH ROYALE `div#news > div.Grid_rowContainer__RAVMO > div.Grid_full-8__23bPT > p.articleGridList_description__YYAgr`
SQUAD BUSTERS `div#news > div.Grid_rowContainer__RAVMO > div.Grid_full-8__23bPT > p.articleGridList_description__YYAgr`
BRAWL STARS `div#news > div.Grid_rowContainer__RAVMO > div.Grid_full-8__23bPT > p.articleGridList_description__YYAgr`
CLASH ROYALE `div#news > div.Grid_rowContainer__RAVMO > div.Grid_full-8__23bPT > p.articleGridList_description__YYAgr`
BRAWL STARS `div#news > div.Grid_rowContainer__RAVMO > div.Grid_full-8__23bPT > p.articleGridList_description__YYAgr`
PEOPLE `div#news > div.Grid_rowContainer__RAVMO > div.Grid_full-8__23bPT > p.articleGridList_description__YYAgr`
MO.CO `div#news > div.Grid_rowContainer__RAVMO > div.Grid_full-8__23bPT > p.articleGridList_description__YYAgr`
NEWS `div#news > div.Grid_rowContainer__RAVMO > div.Grid_full-8__23bPT > p.articleGridList_description__YYAgr`
SQUAD BUSTERS `div#news > div.Grid_rowContainer__RAVMO > div.Grid_full-8__23bPT > p.articleGridList_description__YYAgr`
CLASH ROYALE `div#news > div.Grid_rowContainer__RAVMO > div.Grid_full-8__23bPT > p.articleGridList_description__YYAgr`
ENTERTAINMENT & PARTNERSHIPS `div#news > div.Grid_rowContainer__RAVMO > div.Grid_full-8__23bPT > p.articleGridList_description__YYAgr`
SQUAD BUSTERS `div#news > div.Grid_rowContainer__RAVMO > div.Grid_full-8__23bPT > p.articleGridList_description__YYAgr`
GOOD STUFF `div#news > div.Grid_rowContainer__RAVMO > div.Grid_full-8__23bPT > p.articleGridList_description__YYAgr`
CLASH OF CLANS `div#news > div.Grid_rowContainer__RAVMO > div.Grid_full-8__23bPT > p.articleGridList_description__YYAgr`
NEWS ARCHIVE `div#news > div.Grid_rowContainer__RAVMO > div.articleGridList_bottomButton__URJ3m > a`
Join us to create games that excite and help our players around the world make … `div.frontPage_characterTextRow__xm1Dx > div.Grid_rowContainer__RAVMO > div.frontPage_textContainer__MxJRr > p.frontPage_text__cbTdy`

These are opportunities to improve the legibility of your content.

Navigation

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
GAMES `div.frontPage_characterTextRow__xm1Dx > div.Grid_rowContainer__RAVMO > div.frontPage_textContainer__MxJRr > h3.frontPage_heading__1K_oF`

These are opportunities to improve keyboard navigation in your application.

○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 have a discernible name

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

●List items (`<li>`) are contained within `<ul>`, `<ol>` or `<menu>` parent elements

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

●Touch targets have sufficient size and spacing.

●Skip links are focusable.

●Document has a main landmark.

●Deprecated ARIA roles were not used

●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

○Links are distinguishable without relying on color.

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

○`<object>` elements have alternate text

○Select elements have associated label elements.

○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.

○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

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
supercell.com/en/	`Access to script at 'https://cdn.cookielaw.org/scripttemplates/otSDKStub.js' from origin 'https://supercell.com' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.`
cdn.cookielaw.org/scripttemplates/otSDKStub.js	`Failed to load resource: net::ERR_FAILED`

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL
supercell.com/_next/static/chunks/main-af617b05f1660d1b.js

●Uses HTTPS

●Avoids deprecated APIs

●Avoids third-party cookies

●Allows users to paste into input fields

●Avoids requesting the geolocation permission on page load

●Avoids requesting the notification permission on page load

●Displays images with correct aspect ratio

●Serves images with appropriate resolution

●Page has the HTML doctype

●Properly defines charset

●No 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

○Redirects HTTP traffic to HTTPS

100

SEO

○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`

Results for https://supercell.com

Site Health

How you compare

Top Priorities (5)

Fix Priority Matrix

Quick Wins

Strategic

Easy Improvements

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What fixing these means

Conversion Barriers

Speed (2)

Trust (2)

Content (2)

Navigation (1)

Return on Investment

Investment

Monthly returns

Regulatory risk avoided

Estimated Remediation Cost

Cost by category

Cost by effort level

What Inaction Is Costing You

Compliance Risk

Bandwidth Waste

Lighthouse Scores

Core Web Vitals

Detailed Report

Performance

Insights

Diagnostics

Accessibility

Contrast

Navigation

Best Practices

User Experience

General

SEO

Lighthouse Scores

Core Web Vitals

Detailed Report

Performance

Insights

Diagnostics

Accessibility

Contrast

Navigation

Best Practices

General

SEO

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