Spain · Madrid Completed: Apr 22, 2026 00:30 UTCMobile 375 × 812
Desktop 1440 × 900
Score: 69 / 100
Based on 8 categories, 0 sections
Decent speed, but optimizing further could improve engagement.
Good foundation, but a few gaps could be exploited.
Several issues make your site difficult for assistive technology users.
Solid SEO basics — a few optimizations could boost rankings.
Good server performance with room for optimization.
Several regulatory requirements are not yet met.
Missing metadata means poor previews on social media and search.
Heavier than average — reducing page weight saves energy and bandwidth.
The overall score is a weighted average of individual category scores. Categories with more impact on user experience and security carry more weight.
Weights reflect general web best practices. Individual needs may differ.
Page weighs 9.8 MB (5.1 MB transferred)
Performance issues directly impact user engagement and conversion rates.
No <main> landmark found
Accessibility issues exclude users with disabilities — up to 15% of your potential audience.
No favicon or icon links detected
Accessibility issues exclude users with disabilities — up to 15% of your potential audience.
111 HTTP requests — consider bundling or reducing
Performance issues directly impact user engagement and conversion rates.
Certificate expires soon (29 days remaining)
Security gaps expose your site and users to attacks, eroding trust.
High impact, low effort — start here.
High impact, requires investment.
Small gains, minimal effort.
Nothing in this quadrant — good news.
Low impact, high effort — do last.
Nothing in this quadrant — good news.
[](https://beavercheck.com/results/ee6d58e0-d336-4751-9b04-f713711b0b69)<a href="https://beavercheck.com/results/ee6d58e0-d336-4751-9b04-f713711b0b69"><img src="https://beavercheck.com/badge?url=https%3A%2F%2Fbrill.com" alt="BeaverCheck Score"></a>https://beavercheck.com/badge?url=https%3A%2F%2Fbrill.comThis badge auto-updates with your latest scan result.
Your site has several issues that may be affecting user experience and business outcomes. Your LCP of 10.6s exceeds Google's 2.5s 'Good' threshold and the 2 performance issues below directly contribute to it. Accessibility issues exclude users who rely on assistive technology — an estimated 15% of your potential audience. Addressing the critical issues below would have the most immediate impact on your conversion rate.
10 barrier(s) likely increasing bounce by ~40%.
Page takes 10.6s to load
+12% bounceUsers abandon at ~3s — you're 8.1s over the 2.5s threshold
Fix: Optimize render-blocking resources, preload the hero image, and compress images
Page feels frozen for 900ms
+5% bounceClicks on the primary CTA are ignored while JavaScript runs
Fix: Break up long tasks; defer non-critical JavaScript to post-hydration
No HSTS header
+1% bounceReturning 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% bounceHigher XSS blast radius — one compromised script can exfiltrate the checkout form
Fix: Ship a reporting-only CSP first, then enforce once violations are clean
Severe layout shift during page load
+6% bounceUsers mis-click when content jumps — converting intent into frustration
Fix: Reserve space for images, ads, and embeds with explicit width/height
No viewport meta tag
+15% bounceMobile browsers render at desktop width and shrink — text unreadable, tap targets miniature
Fix: Add <meta name="viewport" content="width=device-width, initial-scale=1">
No Open Graph tags
+2% bounceLinks shared on LinkedIn / Slack / Facebook show bare URLs — referral clicks drop
Fix: Add og:title, og:description, og:image, og:url to the page head
No structured data
+2% bounceNo 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, …)
Thin content
+3% bounceUnder 300 words — visitors bounce looking for substance, search engines rank competitors first
Fix: Add a substantive FAQ, product detail, or case-study section
No skip-to-content link
+1% bounceKeyboard 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.
$750 investment → $4,402/month returns + USD 157,500 risk avoided
$750
8h · 5 findings
$4,402 /mo
~$52,825 / year
USD 157,500
if kept compliant
$50 — in quick wins — start here for the fastest payback
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.
7.5 developer hours at $100/hr
Based on United States rates ($100/hr)
Start here for the best return on investment
$13,126 / month at risk
~$157,515 / year if left unfixed
$157,500
+4 more
$1.29 /mo
16119.8 MB/mo × 0.080 USD/GB
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.
Unique monthly visitors from your analytics
Purchases, signups, or key actions
Optional — for revenue estimation
more engaged visitors from reduced bounce
Fix 3 critical issues to capture this value
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
Your data stays in your browser — nothing is sent to our servers
Thanks for your feedback!
We'll use a cached audit if available, or offer to scan.
Industry-standard audits powered by Google Lighthouse.
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.
6.64 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
10.63 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
900 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
1.605
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
10.95 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.
24.04 s
Audit breakdown by category with detailed findings.
Remove large, duplicate JavaScript modules from bundles to reduce unnecessary bytes consumed by network activity.
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
Shipping ES5 transpiled code to modern browsers wastes bytes — every user with an evergreen browser pays for compatibility you don't need.
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.
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.
Performance issues directly impact user engagement and conversion rates.
| Request | Cache TTL | Transfer Size |
|---|---|---|
| www.google-analytics.com/analytics.js | 7200.0 s | 20.9 KiB |
| www.dwin1.com/53581.js | 600.0 s | 13.4 KiB |
| pftag.scholarlyiq.com/siqpagetag.js | 0.0 ms | 3.6 KiB |
| cdn.jsdelivr.net/npm/mathjax@2/MathJax.js?config=default | 604800.0 s | 20.0 KiB |
| cdn.jsdelivr.net/npm/mathjax@2/extensions/MathMenu.js?V=2.7.9 | 604800.0 s | 12.2 KiB |
| cdn.jsdelivr.net/npm/mathjax@2/config/default.js?V=2.7.9 | 604800.0 s | 10.9 KiB |
| cdn.jsdelivr.net/npm/mathjax@2/extensions/MathZoom.js?V=2.7.9 | 604800.0 s | 3.4 KiB |
| cdn.jsdelivr.net/npm/mathjax@2/extensions/mml2jax.js?V=2.7.9 | 604800.0 s | 2.5 KiB |
| cdn.jsdelivr.net/npm/mathjax@2/jax/output/CommonHTML/config.js?V=2.7.9 | 604800.0 s | 1.1 KiB |
| cdn.jsdelivr.net/npm/mathjax@2/jax/output/NativeMML/config.js?V=2.7.9 | 604800.0 s | 1015 B |
| cdn.jsdelivr.net/npm/mathjax@2/jax/input/MathML/config.js?V=2.7.9 | 604800.0 s | 922 B |
Layout shifts occur when elements move absent any user interaction. Investigate the causes of layout shifts, such as elements being added, removed, or their fonts changing as the page loads.
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.
Performance issues directly impact user engagement and conversion rates.
Consider setting font-display to swap or optional to ensure text is consistently visible. swap can be further optimized to mitigate layout shifts with font metric overrides.
Performance issues directly impact user engagement and conversion rates.
Optimize LCP by making the LCP image discoverable from the HTML immediately, and avoiding lazy-loading
Performance issues directly impact user engagement and conversion rates.
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.
Performance issues directly impact user engagement and conversion rates.
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.
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
Performance issues directly impact user engagement and conversion rates.
| URL | Resource Size | Est Savings | |
|---|---|---|---|
div.wrapper > div.image-container > a > img div.wrapper > div.image-container > a > img | brill.com/fileasset/home/home_hero_whm2026.png | 1.7 MiB | 1.7 MiB |
div.wrapper > div.image-container > a > img div.wrapper > div.image-container > a > img | brill.com/fileasset/home/home_dlcc.png | 616.1 KiB | 593.0 KiB |
div.wrapper > div.image-container > a > img div.wrapper > div.image-container > a > img | brill.com/fileasset/home/home_hero_5.png | 338.3 KiB | 315.2 KiB |
div.wrapper > div.image-container > a > img div.wrapper > div.image-container > a > img | brill.com/fileasset/home/home_hero_default2025_eng.png | 57.3 KiB | 34.2 KiB |
Cover Handbook of Chinese Migration to Europe div.cover > a > picture > img | brill.com/coverimage?doc=%2Ftitle%2F63002&width=200&type=webp | 19.5 KiB | 9.6 KiB |
Cover Le yiddish, l’inconscient, les langues div.cover > a > picture > img | brill.com/coverimage?doc=%2Ftitle%2F70130&width=200&type=webp | 14.8 KiB | 4.9 KiB |
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.
Performance issues directly impact user engagement and conversion rates.
| URL | Time Spent |
|---|---|
| brill.com/ | 907 ms |
| brill.com/ | 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.
Performance issues directly impact user engagement and conversion rates.
| URL | Time Spent |
|---|---|
| brill.com/ | 1.3 s |
These are the largest layout shifts observed on the page. Each table item represents a single layout shift, and shows the element that shifted the most. Below each item are possible root causes that led to the layout shift. Some of these layout shifts may not be included in the CLS metric value due to windowing. Learn how to improve CLS
Performance issues directly impact user engagement and conversion rates.
| Element | Layout shift score |
|---|---|
Title Highlights div#pageBody > div.configurable-layout > div.layout > div.column-group | 0.433 |
Product Information
Books
Journals
Specialty Products
Metadata: Title Lists… body.home > div#contentWrapper > div#footerWrap | 0.427 |
Title Highlights div#pageBody > div.configurable-layout > div.layout > div.column-group | 0.319 |
Cover Global Catholicism div.slide > div.typography-body > div.component > div.cover | 0.318 |
1234
Title Highlights div#contentWrapper > div#columnWrapper > div#pageBody > div.configurable-layout | 0.109 |
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.
Performance issues directly impact user engagement and conversion rates.
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.
Performance issues directly impact user engagement and conversion rates.
Minifying JavaScript files can reduce payload sizes and script parse time. Learn how to minify JavaScript.
Performance issues directly impact user engagement and conversion rates.
| URL | Transfer Size | Est Savings |
|---|---|---|
| brill.com/assets/meta/z8c546d97/tapestry5/jquery.js | 86.0 KiB | 41.8 KiB |
| brill.com/assets/vendor/z569b5820/require.js | 20.8 KiB | 14.5 KiB |
| brill.com/assets/meta/z48b58321/tapestry5/scriptaculous_1_9_0/prototype.js | 45.0 KiB | 11.9 KiB |
| cdn.jsdelivr.net/npm/mathjax@2/config/default.js?V=2.7.9 | 10.8 KiB | 9.9 KiB |
| brill.com/assets/meta/z38cab71/tapestry5/underscore-1.13.6.js | 18.9 KiB | 9.8 KiB |
| brill.com/modules.gz/t5/core/typeahead.js | 13.6 KiB | 5.8 KiB |
| brill.com/assets/responsive/zf0c61771/js/configurable-layout.js | 6.0 KiB | 2.6 KiB |
| brill.com/assets/meta/zca7ee6c7/tapestry5/scriptaculous_1_9_0/effects.js | 8.5 KiB | 2.0 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.
Performance issues directly impact user engagement and conversion rates.
| URL | Transfer Size | Est Savings |
|---|---|---|
| /skin/63bd09df2089723e864c7521e8629d62162546e6-2F47E1D8F3... | 135.2 KiB | 132.3 KiB |
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. Learn how to reduce unused JavaScript.
Multi-megabyte JavaScript bundles delay every interactive feature on the page.
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
| URL | Transfer Size | Est Savings |
|---|---|---|
| /ac0c8b7050ff/53829109e090/be752f2dce0c/challenge.js | 501.1 KiB | 277.7 KiB |
| brill.com/skin/63bd09df2089723e864c7521e8629d62162546e6/js/skin-sync.min.js | 186.2 KiB | 122.8 KiB |
| brill.com/modules.gz/baseapp/combined-skin-min.js | 125.6 KiB | 106.9 KiB |
| www.googletagmanager.com/gtag/js?id=G-7D0PQT340Y&cx=c>m=4e64h1 | 172.7 KiB | 67.9 KiB |
| www.googletagmanager.com/gtm.js?id=GTM-WF6V4F | 143.1 KiB | 61.0 KiB |
| brill.com/modules.gz/jquery-ui.js | 66.3 KiB | 58.6 KiB |
| brill.com/assets/vendor/z5ec668da/jquery-ui/jquery-ui.min.js | 66.3 KiB | 56.7 KiB |
| brill.com/assets/meta/z48b58321/tapestry5/scriptaculous_1_9_0/prototype.js | 45.0 KiB | 30.4 KiB |
| brill.com/assets/meta/z8c546d97/tapestry5/jquery.js | 86.0 KiB | 21.2 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.
Performance issues directly impact user engagement and conversion rates.
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
Performance issues directly impact user engagement and conversion rates.
| Category | Time Spent |
|---|---|
| Script Evaluation | 2.4 s |
| Other | 673 ms |
| Script Parsing & Compilation | 446 ms |
| Style & Layout | 375 ms |
| Parse HTML & CSS | 156 ms |
| Rendering | 55 ms |
| Garbage Collection | 41 ms |
Large network payloads cost users real money and are highly correlated with long load times. Learn how to reduce payload sizes.
Performance issues directly impact user engagement and conversion rates.
Set an explicit width and height on image elements to reduce layout shifts and improve CLS. Learn how to set image dimensions
Performance issues directly impact user engagement and conversion rates.
| URL | |
|---|---|
div.wrapper > div.image-container > a > img div.wrapper > div.image-container > a > img | brill.com/fileasset/home/home_hero_whm2026.png |
div.wrapper > div.image-container > a > img div.wrapper > div.image-container > a > img | brill.com/fileasset/home/home_hero_whm2026.png |
div.wrapper > div.image-container > a > img div.wrapper > div.image-container > a > img | brill.com/fileasset/home/home_dlcc.png |
div.wrapper > div.image-container > a > img div.wrapper > div.image-container > a > img | brill.com/fileasset/home/home_hero_default2025_eng.png |
div.wrapper > div.image-container > a > img div.wrapper > div.image-container > a > img | brill.com/fileasset/home/home_hero_5.png |
div.wrapper > div.image-container > a > img div.wrapper > div.image-container > a > img | brill.com/fileasset/home/home_hero_5.png |
Cover Modal Pragmatics div.cover > a > picture > img | brill.com/coverimage?doc=%2Ftitle%2F71221&width=200&type=webp |
Cover Philosophy in the Islamic World div.cover > a > picture > img | brill.com/coverimage?doc=%2Ftitle%2F63085&width=200&type=webp |
Cover Motus mixti et compositi: The Portrayal of Mixed and Compound Emotions in… div.cover > a > picture > img | brill.com/coverimage?doc=%2Ftitle%2F69968&width=200&type=webp |
Cover Handbook of Chinese Migration to Europe div.cover > a > picture > img | brill.com/coverimage?doc=%2Ftitle%2F63002&width=200&type=webp |
Cover International Investment Law and the Pandemic div.cover > a > picture > img | brill.com/coverimage?doc=%2Ftitle%2F64497&width=200&type=webp |
Cover Le Labyrinthe littéraire de Mohamed Mbougar Sarr div.cover > a > picture > img | brill.com/coverimage?doc=%2Ftitle%2F70249&width=200&type=webp |
Cover The Contemporary Elegy in World Literature div.cover > a > picture > img | brill.com/coverimage?doc=%2Ftitle%2F71417&width=200&type=webp |
Cover France and the Destruction of the Jesuits, 1759–65 div.cover > a > picture > img | brill.com/coverimage?doc=%2Ftitle%2F60119&width=200&type=webp |
Cover Le yiddish, l’inconscient, les langues div.cover > a > picture > img | brill.com/coverimage?doc=%2Ftitle%2F70130&width=200&type=webp |
Cover The Church Fathers in Arabic Translations div.cover > a > picture > img | brill.com/coverimage?doc=%2Ftitle%2F71210&width=200&type=webp |
Cover Ownership Regimes in the Iberian World (1500–1850) div.cover > a > picture > img | brill.com/coverimage?doc=%2Ftitle%2F71771&width=200&type=webp |
Cover Handbook of Chinese Migration to Europe div.cover > a > picture > img | brill.com/coverimage?doc=%2Ftitle%2F63002&width=200&type=webp |
Cover International Investment Law and the Pandemic div.cover > a > picture > img | brill.com/coverimage?doc=%2Ftitle%2F64497&width=200&type=webp |
Cover International Perspectives on Teaching and Learning for Mathematical Lite… div.cover > a > picture > img | brill.com/coverimage?doc=%2Ftitle%2F61437&width=200&type=webp |
Cover Global Catholicism div.cover > a > picture > img | brill.com/coverimage?doc=%2Ftitle%2F70393&width=200&type=webp |
Cover Young Migrants and Plurilingualism in Schools div.cover > a > picture > img | brill.com/coverimage?doc=%2Ftitle%2F70843&width=200&type=webp |
Cover Hegel und die Herausforderungen unserer Zeit / Facing the challenges of o… div.cover > a > picture > img | brill.com/coverimage?doc=%2Ftitle%2F61488&width=200&type=webp |
Cover The Silent Peacemaker: Intellectual Property Rights and the Interwar Inte… div.cover > a > picture > img | brill.com/coverimage?doc=%2Ftitle%2F71296&width=200&type=webp |
Cover Future Knowledge and Imperial Acceptance in Late Antique Historiography a… div.cover > a > picture > img | brill.com/coverimage?doc=%2Ftitle%2F71301&width=200&type=webp |
Cover Dictionary of Taoist Internal Alchemy div.cover > a > picture > img | brill.com/coverimage?doc=%2Ftitle%2F70315&width=200&type=webp |
Cover Sahidic Coptic Leviticus div.cover > a > picture > img | brill.com/coverimage?doc=%2Ftitle%2F64847&width=200&type=webp |
Cover Velázquez, Painter & Curator div.cover > a > picture > img | brill.com/coverimage?doc=%2Ftitle%2F69619&width=200&type=webp |
Cover Cattle Breeds of the World div.cover > a > picture > img | brill.com/coverimage?doc=%2Ftitle%2F59475&width=200&type=webp |
Brill Logo div.display-flex > div.display-flex > a.display-block > img | brill.com/fileasset//fileasset/appbar/logo-brill-300x100-transparent-mobile.png |
More information about the performance of your application. These numbers don't directly affect the Performance score.
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.
Each ARIA `role` supports a specific subset of `aria-*` attributes. Mismatching these invalidates the `aria-*` attributes. Learn how to match ARIA attributes to their roles.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
1 div#static-slider > div.slider > ul.slick-dots > li#slick-slide00 |
Some ARIA parent roles must contain specific child roles to perform their intended accessibility functions. Learn more about roles and required children elements.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
1234 div.pattern-library-style-root > div#static-slider > div.slider > ul.slick-dots |
Assistive technologies, like screen readers, can't interpret ARIA attributes with invalid values. Learn more about valid values for ARIA attributes.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
1 div#static-slider > div.slider > ul.slick-dots > li#slick-slide00 |
Focusable descendents within an `[aria-hidden="true"]` element prevent those interactive elements from being available to users of assistive technologies like screen readers. Learn how `aria-hidden` affects focusable elements.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
2 div#static-slider > div.slider > ul.slick-dots > li#slick-slide01 |
3 div#static-slider > div.slider > ul.slick-dots > li#slick-slide02 |
4 div#static-slider > div.slider > ul.slick-dots > li#slick-slide03 |
When an input field doesn't have an accessible name, screen readers announce it with a generic name, making it unusable for users who rely on screen readers. Learn more about input field labels.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
div#static-slider > div.slider > div.slick-list > div.slick-track div#static-slider > div.slider > div.slick-list > div.slick-track |
Cover Handbook of Chinese Migration to Europe div.content-box-body > div.slider > div.slick-list > div.slick-track |
When a toggle field doesn't have an accessible name, screen readers announce it with a generic name, making it unusable for users who rely on screen readers. Learn more about toggle fields.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
div.slider > div.slick-list > div.slick-track > div.slide1 div.slider > div.slick-list > div.slick-track > div.slide1 |
These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.
Link text (and alternate text for images, when used as links) that is discernible, unique, and focusable improves the navigation experience for screen reader users. Learn how to make links accessible.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
div.slide1 > div.wrapper > div.image-container > a div.slide1 > div.wrapper > div.image-container > a |
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.
Image natural dimensions should be proportional to the display size and the pixel ratio to maximize image clarity. Learn how to provide responsive images.
Performance issues directly impact user engagement and conversion rates.
| URL | Displayed size | Actual size | Expected size | |
|---|---|---|---|---|
Cover Philosophy in the Islamic World div.cover > a > picture > img | brill.com/coverimage?doc=%2Ftitle%2F63085&width=200&type=webp | 330 x 504 | 200 x 306 | 495 x 756 |
Brill Logo div.display-flex > div.display-flex > a.display-block > img | brill.com/fileasset//fileasset/appbar/logo-brill-300x100-transparent-mobile.png | 268 x 89 | 300 x 100 | 402 x 134 |
Deprecated APIs will eventually be removed from the browser. Learn more about deprecated APIs.
Performance issues directly impact user engagement and conversion rates.
| Deprecation / Warning | Source |
|---|---|
| SharedStorage |
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
Performance issues directly impact user engagement and conversion rates.
| Source | Description |
|---|---|
Failed to load resource: the server responded with a status of 404 () | |
Refused to apply style from 'https://brill.com/staticcss/cms/patternTemplate/styles.css?cssPrefix=div.pattern-library-style-root' because its MIME type ('text/html') is not a supported stylesheet MIME type, and strict MIME checking is enabled. | |
Refused to apply style from 'https://brill.com/staticcss/cms/patternTemplate/styles.css?cssPrefix=div.pattern-library-style-root' because its MIME type ('text/html') is not a supported stylesheet MIME type, and strict MIME checking is enabled. |
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.
Performance issues directly impact user engagement and conversion rates.
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.
Industry-standard audits powered by Google Lighthouse. — Desktop
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.
1.42 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
3.86 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
26 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
2.385
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
3.01 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.
3.98 s
Audit breakdown by category with detailed findings.
Remove large, duplicate JavaScript modules from bundles to reduce unnecessary bytes consumed by network activity.
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
Shipping ES5 transpiled code to modern browsers wastes bytes — every user with an evergreen browser pays for compatibility you don't need.
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.
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.
Performance issues directly impact user engagement and conversion rates.
| Request | Cache TTL | Transfer Size |
|---|---|---|
| www.google-analytics.com/analytics.js | 7200.0 s | 20.9 KiB |
| www.dwin1.com/53581.js | 600.0 s | 13.4 KiB |
| cdn.cookielaw.org/scripttemplates/otSDKStub.js | 86400.0 s | 9.0 KiB |
| pftag.scholarlyiq.com/siqpagetag.js | 0.0 ms | 3.6 KiB |
| cdn.jsdelivr.net/npm/mathjax@2/MathJax.js?config=default | 604800.0 s | 20.0 KiB |
| cdn.jsdelivr.net/npm/mathjax@2/extensions/MathMenu.js?V=2.7.9 | 604800.0 s | 12.2 KiB |
| cdn.jsdelivr.net/npm/mathjax@2/config/default.js?V=2.7.9 | 604800.0 s | 10.9 KiB |
| cdn.jsdelivr.net/npm/mathjax@2/extensions/MathZoom.js?V=2.7.9 | 604800.0 s | 3.4 KiB |
| cdn.jsdelivr.net/npm/mathjax@2/extensions/mml2jax.js?V=2.7.9 | 604800.0 s | 2.5 KiB |
| cdn.jsdelivr.net/npm/mathjax@2/jax/output/CommonHTML/config.js?V=2.7.9 | 604800.0 s | 1.1 KiB |
| cdn.jsdelivr.net/npm/mathjax@2/jax/output/NativeMML/config.js?V=2.7.9 | 604800.0 s | 1015 B |
| cdn.jsdelivr.net/npm/mathjax@2/jax/input/MathML/config.js?V=2.7.9 | 604800.0 s | 922 B |
Layout shifts occur when elements move absent any user interaction. Investigate the causes of layout shifts, such as elements being added, removed, or their fonts changing as the page loads.
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.
Performance issues directly impact user engagement and conversion rates.
Consider setting font-display to swap or optional to ensure text is consistently visible. swap can be further optimized to mitigate layout shifts with font metric overrides.
Performance issues directly impact user engagement and conversion rates.
Optimize LCP by making the LCP image discoverable from the HTML immediately, and avoiding lazy-loading
Performance issues directly impact user engagement and conversion rates.
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.
Performance issues directly impact user engagement and conversion rates.
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.
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
Performance issues directly impact user engagement and conversion rates.
| URL | Resource Size | Est Savings | |
|---|---|---|---|
div.wrapper > div.image-container > a > img div.wrapper > div.image-container > a > img | brill.com/fileasset/home/home_hero_whm2026.png | 1.7 MiB | 1.6 MiB |
div.wrapper > div.image-container > a > img div.wrapper > div.image-container > a > img | brill.com/fileasset/home/home_dlcc.png | 616.1 KiB | 546.9 KiB |
div.wrapper > div.image-container > a > img div.wrapper > div.image-container > a > img | brill.com/fileasset/home/home_hero_5.png | 338.3 KiB | 294.0 KiB |
div.wrapper > div.image-container > a > img div.wrapper > div.image-container > a > img | brill.com/fileasset/home/home_hero_default2025_eng.png | 57.3 KiB | 12.9 KiB |
Cover Blicklichter und Grenzgänge div.cover > a > picture > img | brill.com/coverimage?doc=%2Ftitle%2F71173&width=200&type=webp | 19.2 KiB | 9.3 KiB |
Blue Square div.display-none > div.display-none > div.display-flex > img | brill.com/fileasset/home/brillsquare.png | 4.2 KiB | 4.1 KiB |
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.
Performance issues directly impact user engagement and conversion rates.
| URL | Time Spent |
|---|---|
| brill.com/ | 328 ms |
| brill.com/ | 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.
Performance issues directly impact user engagement and conversion rates.
| URL | Time Spent |
|---|---|
| brill.com/ | 1.3 s |
These are the largest layout shifts observed on the page. Each table item represents a single layout shift, and shows the element that shifted the most. Below each item are possible root causes that led to the layout shift. Some of these layout shifts may not be included in the CLS metric value due to windowing. Learn how to improve CLS
Performance issues directly impact user engagement and conversion rates.
| Element | Layout shift score |
|---|---|
Title Highlights div#pageBody > div.configurable-layout > div.layout > div.column-group | 0.750 |
Title Highlights div#pageBody > div.configurable-layout > div.layout > div.column-group | 0.665 |
Product Information
Books
Journals
Specialty Products
Metadata: Title Lists… body.home > div#contentWrapper > div#footerWrap | 0.462 |
Cover Yearbook on the African Union Volume 4 (2023) div.slide > div.typography-body > div.component > div.cover | 0.420 |
1234
BRILL
BÖHLAU
FINK
MENTIS
NIJHOFF
SCHÖNINGH
VANDENHOECK & RUPRECHT
V&R UNIP… div#contentWrapper > div#columnWrapper > div#pageBody > div.configurable-layout | 0.080 |
Title Highlights div#pageBody > div.configurable-layout > div.layout > div.column-group | 0.008 |
div#static-slider > div.slider > button.slick-prev > ::before div#static-slider > div.slider > button.slick-prev > ::before | 0.000 |
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.
Performance issues directly impact user engagement and conversion rates.
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.
Performance issues directly impact user engagement and conversion rates.
| URL | Transfer Size | Est Savings |
|---|---|---|
| /skin/63bd09df2089723e864c7521e8629d62162546e6-2F47E1D8F3... | 135.2 KiB | 131.2 KiB |
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. Learn how to reduce unused JavaScript.
Multi-megabyte JavaScript bundles delay every interactive feature on the page.
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
| URL | Transfer Size | Est Savings |
|---|---|---|
| /ac0c8b7050ff/53829109e090/be752f2dce0c/challenge.js | 501.1 KiB | 277.8 KiB |
| brill.com/skin/63bd09df2089723e864c7521e8629d62162546e6/js/skin-sync.min.js | 186.2 KiB | 122.8 KiB |
| brill.com/modules.gz/baseapp/combined-skin-min.js | 125.6 KiB | 106.9 KiB |
| www.googletagmanager.com/gtag/js?id=G-7D0PQT340Y&cx=c>m=4e64h1 | 172.7 KiB | 67.6 KiB |
| www.googletagmanager.com/gtm.js?id=GTM-WF6V4F | 143.1 KiB | 61.0 KiB |
| brill.com/modules.gz/jquery-ui.js | 66.3 KiB | 58.6 KiB |
| brill.com/assets/vendor/z5ec668da/jquery-ui/jquery-ui.min.js | 66.3 KiB | 56.7 KiB |
| brill.com/assets/meta/z48b58321/tapestry5/scriptaculous_1_9_0/prototype.js | 45.0 KiB | 30.4 KiB |
| brill.com/assets/meta/z8c546d97/tapestry5/jquery.js | 86.0 KiB | 21.2 KiB |
Minifying JavaScript files can reduce payload sizes and script parse time. Learn how to minify JavaScript.
Performance issues directly impact user engagement and conversion rates.
| URL | Transfer Size | Est Savings |
|---|---|---|
| brill.com/assets/meta/z8c546d97/tapestry5/jquery.js | 86.0 KiB | 41.8 KiB |
| brill.com/assets/vendor/z569b5820/require.js | 20.8 KiB | 14.5 KiB |
| brill.com/assets/meta/z48b58321/tapestry5/scriptaculous_1_9_0/prototype.js | 45.0 KiB | 11.9 KiB |
| cdn.jsdelivr.net/npm/mathjax@2/config/default.js?V=2.7.9 | 10.8 KiB | 9.9 KiB |
| brill.com/assets/meta/z38cab71/tapestry5/underscore-1.13.6.js | 18.9 KiB | 9.8 KiB |
| brill.com/modules.gz/t5/core/typeahead.js | 13.6 KiB | 5.8 KiB |
| brill.com/assets/responsive/zf0c61771/js/configurable-layout.js | 6.0 KiB | 2.6 KiB |
| brill.com/assets/meta/zca7ee6c7/tapestry5/scriptaculous_1_9_0/effects.js | 8.5 KiB | 2.0 KiB |
Large network payloads cost users real money and are highly correlated with long load times. Learn how to reduce payload sizes.
Performance issues directly impact user engagement and conversion rates.
Set an explicit width and height on image elements to reduce layout shifts and improve CLS. Learn how to set image dimensions
Performance issues directly impact user engagement and conversion rates.
| URL | |
|---|---|
div.wrapper > div.image-container > a > img div.wrapper > div.image-container > a > img | brill.com/fileasset/home/home_hero_whm2026.png |
div.wrapper > div.image-container > a > img div.wrapper > div.image-container > a > img | brill.com/fileasset/home/home_hero_whm2026.png |
div.wrapper > div.image-container > a > img div.wrapper > div.image-container > a > img | brill.com/fileasset/home/home_dlcc.png |
div.wrapper > div.image-container > a > img div.wrapper > div.image-container > a > img | brill.com/fileasset/home/home_hero_default2025_eng.png |
div.wrapper > div.image-container > a > img div.wrapper > div.image-container > a > img | brill.com/fileasset/home/home_hero_5.png |
div.wrapper > div.image-container > a > img div.wrapper > div.image-container > a > img | brill.com/fileasset/home/home_hero_5.png |
Cover The Aims and Methods of Postcolonial International Law div.cover > a > picture > img | brill.com/coverimage?doc=%2Ftitle%2F70093&width=200&type=webp |
Cover The Aims and Methods of Postcolonial International Law div.cover > a > picture > img | brill.com/coverimage?doc=%2Ftitle%2F70093&width=200&type=webp |
Cover Yearbook on the African Union Volume 4 (2023) div.cover > a > picture > img | brill.com/cover/default?doc=%2Fcover%2Fdefault&width=200&type=webp |
Cover Philosophy in the Islamic World div.cover > a > picture > img | brill.com/coverimage?doc=%2Ftitle%2F63085&width=200&type=webp |
Cover Litigating the Rights of Minorities and Indigenous Peoples in Domestic an… div.cover > a > picture > img | brill.com/coverimage?doc=%2Ftitle%2F60070&width=200&type=webp |
Cover International Children’s Rights Instruments div.cover > a > picture > img | brill.com/coverimage?doc=%2Ftitle%2F68730&width=200&type=webp |
Cover Narrating the Heritage of Psychiatry div.cover > a > picture > img | brill.com/coverimage?doc=%2Ftitle%2F63041&width=200&type=webp |
Cover Time and International Adjudication div.cover > a > picture > img | brill.com/coverimage?doc=%2Ftitle%2F68275&width=200&type=webp |
Cover A Functional Approach to the Legal Review of Autonomous Weapon Systems div.cover > a > picture > img | brill.com/coverimage?doc=%2Ftitle%2F70788&width=200&type=webp |
Cover The Fragile Juggernaut div.cover > a > picture > img | brill.com/coverimage?doc=%2Ftitle%2F70910&width=200&type=webp |
Cover Litigating the Rights of Minorities and Indigenous Peoples in Domestic an… div.cover > a > picture > img | brill.com/coverimage?doc=%2Ftitle%2F60070&width=200&type=webp |
Cover International Children’s Rights Instruments div.cover > a > picture > img | brill.com/coverimage?doc=%2Ftitle%2F68730&width=200&type=webp |
Cover Narrative Hermeneutics, History, and Rhetoric div.cover > a > picture > img | brill.com/coverimage?doc=%2Ftitle%2F70521&width=200&type=webp |
Cover Narrative Hermeneutics, History, and Rhetoric div.cover > a > picture > img | brill.com/coverimage?doc=%2Ftitle%2F70521&width=200&type=webp |
Cover Autoethnographies of Border-Crossing and In-Betweenness of International … div.cover > a > picture > img | brill.com/coverimage?doc=%2Ftitle%2F71591&width=200&type=webp |
Cover Blicklichter und Grenzgänge div.cover > a > picture > img | brill.com/coverimage?doc=%2Ftitle%2F71173&width=200&type=webp |
Cover Brokenness and Grace div.cover > a > picture > img | brill.com/coverimage?doc=%2Ftitle%2F71306&width=200&type=webp |
Cover Autoethnographies of Border-Crossing and In-Betweenness of International … div.cover > a > picture > img | brill.com/coverimage?doc=%2Ftitle%2F71591&width=200&type=webp |
Cover Blicklichter und Grenzgänge div.cover > a > picture > img | brill.com/coverimage?doc=%2Ftitle%2F71173&width=200&type=webp |
Cover Brokenness and Grace div.cover > a > picture > img | brill.com/coverimage?doc=%2Ftitle%2F71306&width=200&type=webp |
Cover Apollonius’ <i>Argonautica</i> and the <i>Homeric Hymns</i> div.cover > a > picture > img | brill.com/coverimage?doc=%2Ftitle%2F71320&width=200&type=webp |
Cover Fragments of Languages div.cover > a > picture > img | brill.com/coverimage?doc=%2Ftitle%2F69969&width=200&type=webp |
Cover Research in the Social Scientific Study of Religion, Volume 34 div.cover > a > picture > img | brill.com/coverimage?doc=%2Ftitle%2F70161&width=200&type=webp |
Cover Brill’s Companion to War in the Ancient Iranian Empires div.cover > a > picture > img | brill.com/coverimage?doc=%2Ftitle%2F70904&width=200&type=webp |
Cover Mythology, Chronology, Idolatry div.cover > a > picture > img | brill.com/coverimage?doc=%2Ftitle%2F69253&width=200&type=webp |
Cover Apollonius’ <i>Argonautica</i> and the <i>Homeric Hymns</i> div.cover > a > picture > img | brill.com/coverimage?doc=%2Ftitle%2F71320&width=200&type=webp |
Cover Fragments of Languages div.cover > a > picture > img | brill.com/coverimage?doc=%2Ftitle%2F69969&width=200&type=webp |
Cover Bridge-Builder between East and West div.cover > a > picture > img | brill.com/coverimage?doc=%2Ftitle%2F70396&width=200&type=webp |
Cover Bridge-Builder between East and West div.cover > a > picture > img | brill.com/coverimage?doc=%2Ftitle%2F70396&width=200&type=webp |
Cover Sahidic Coptic Leviticus div.cover > a > picture > img | brill.com/coverimage?doc=%2Ftitle%2F64847&width=200&type=webp |
Cover Burial and Memorial in Late Antiquity div.cover > a > picture > img | brill.com/coverimage?doc=%2Ftitle%2F69440&width=200&type=webp |
Brill Logo div.display-none > div.display-none > a.display-none > img | brill.com/fileasset//fileasset/appbar/logo-brill-300x100-transparent-desktop.png |
Blue Square div.display-none > div.display-none > div.display-flex > img | brill.com/fileasset/home/brillsquare.png |
Orange Square div.display-none > div.display-none > div.display-flex > img | brill.com/fileasset/home/boehlausquare.png |
Green Square div.display-none > div.display-none > div.display-flex > img | brill.com/fileasset/home/finksquare.png |
Light Blue Square div.display-none > div.display-none > div.display-flex > img | brill.com/fileasset/home/mentissquare.png |
Grey Square div.display-none > div.display-none > div.display-flex > img | brill.com/fileasset/home/nijhoffsquare.png |
Red Square div.display-none > div.display-none > div.display-flex > img | brill.com/fileasset/home/schoeninghsquare.png |
Light Red Square div.display-none > div.display-none > div.display-flex > img | brill.com/fileasset/home/vrsquare.png |
Light Red Square div.display-none > div.display-none > div.display-flex > img | brill.com/fileasset/home/vrsquare.png |
BlueGreen Square div.display-none > div.display-none > div.display-flex > img | brill.com/fileasset/home/wageningensquare.png |
More information about the performance of your application. These numbers don't directly affect the Performance score.
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.
Each ARIA `role` supports a specific subset of `aria-*` attributes. Mismatching these invalidates the `aria-*` attributes. Learn how to match ARIA attributes to their roles.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
1 div#static-slider > div.slider > ul.slick-dots > li#slick-slide00 |
Some ARIA parent roles must contain specific child roles to perform their intended accessibility functions. Learn more about roles and required children elements.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
1234 div.pattern-library-style-root > div#static-slider > div.slider > ul.slick-dots |
Assistive technologies, like screen readers, can't interpret ARIA attributes with invalid values. Learn more about valid values for ARIA attributes.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
1 div#static-slider > div.slider > ul.slick-dots > li#slick-slide00 |
Focusable descendents within an `[aria-hidden="true"]` element prevent those interactive elements from being available to users of assistive technologies like screen readers. Learn how `aria-hidden` affects focusable elements.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
2 div#static-slider > div.slider > ul.slick-dots > li#slick-slide01 |
3 div#static-slider > div.slider > ul.slick-dots > li#slick-slide02 |
4 div#static-slider > div.slider > ul.slick-dots > li#slick-slide03 |
When an input field doesn't have an accessible name, screen readers announce it with a generic name, making it unusable for users who rely on screen readers. Learn more about input field labels.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
div#static-slider > div.slider > div.slick-list > div.slick-track div#static-slider > div.slider > div.slick-list > div.slick-track |
Cover Autoethnographies of Border-Crossing and In-Betweenness of International … div.content-box-body > div.slider > div.slick-list > div.slick-track |
When a toggle field doesn't have an accessible name, screen readers announce it with a generic name, making it unusable for users who rely on screen readers. Learn more about toggle fields.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
div.slider > div.slick-list > div.slick-track > div.slide1 div.slider > div.slick-list > div.slick-track > div.slide1 |
These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.
Link text (and alternate text for images, when used as links) that is discernible, unique, and focusable improves the navigation experience for screen reader users. Learn how to make links accessible.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
div.slide1 > div.wrapper > div.image-container > a div.slide1 > div.wrapper > div.image-container > a |
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.
Deprecated APIs will eventually be removed from the browser. Learn more about deprecated APIs.
Performance issues directly impact user engagement and conversion rates.
| Deprecation / Warning | Source |
|---|---|
| SharedStorage |
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
Performance issues directly impact user engagement and conversion rates.
| Source | Description |
|---|---|
Access to XMLHttpRequest at 'https://cdn.cookielaw.org/consent/d2e19b44-09e3-4fd6-bf71-71d8fe31d61c/d2e19b44-09e3-4fd6-bf71-71d8fe31d61c.json' from origin 'https://brill.com' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource. | |
Failed to load resource: net::ERR_FAILED | |
Failed to load resource: the server responded with a status of 404 () | |
Refused to apply style from 'https://brill.com/staticcss/cms/patternTemplate/styles.css?cssPrefix=div.pattern-library-style-root' because its MIME type ('text/html') is not a supported stylesheet MIME type, and strict MIME checking is enabled. | |
Refused to apply style from 'https://brill.com/staticcss/cms/patternTemplate/styles.css?cssPrefix=div.pattern-library-style-root' because its MIME type ('text/html') is not a supported stylesheet MIME type, and strict MIME checking is enabled. | |
Uncaught TypeError: Cannot read properties of undefined (reading 'Domain') |
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.
Performance issues directly impact user engagement and conversion rates.
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.
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