United States · Santa Clara Completed: Apr 21, 2026 22:34 UTCMobile 375 × 812
Desktop 1440 × 900
Score: 77 / 100
Based on 8 categories, 0 sections
Fast site — your users get a smooth experience.
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.
Good server performance with room for optimization.
Mostly compliant — a few items need attention.
Rich content metadata — your pages look great everywhere.
Reasonable footprint with room for optimization.
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.
Content-Security-Policy header is missing
Security gaps expose your site and users to attacks, eroding trust.
No Content-Security-Policy header found
Security gaps expose your site and users to attacks, eroding trust.
2 button(s) with no accessible text
Accessibility issues exclude users with disabilities — up to 15% of your potential audience.
Soft 404: server returns HTTP 200 for non-existent pages
Accessibility issues exclude users with disabilities — up to 15% of your potential audience.
16 third-party resources (100% of weight)
Performance issues directly impact user engagement and conversion rates.
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/f5196f64-0231-4cd0-b60f-6b0d8d612d33)<a href="https://beavercheck.com/results/f5196f64-0231-4cd0-b60f-6b0d8d612d33"><img src="https://beavercheck.com/badge?url=https%3A%2F%2Fnypl.org" alt="BeaverCheck Score"></a>https://beavercheck.com/badge?url=https%3A%2F%2Fnypl.orgThis badge auto-updates with your latest scan result.
Your site performs reasonably well, but a few targeted fixes could meaningfully improve results. The 1 performance issue below shapes how fast users perceive your page. Addressing the critical issues below would have the most immediate impact on your user trust.
3 barrier(s) likely increasing bounce by ~6%.
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
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, …)
Preliminary CRO audit — each barrier links to the tab with detailed analysis.
$600 investment → $0.17/month returns + USD 7,500 risk avoided
$600
6h · 5 findings
$0.17 /mo
~$2.00 / year
USD 7,500
if kept compliant
$100 — 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.
6.0 developer hours at $100/hr
Based on United States rates ($100/hr)
Start here for the best return on investment
$625 / month at risk
~$7,502 / year if left unfixed
$7,500
+1 more
$0.17 /mo
2080.8 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.
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.
0 ms
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
0 ms
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
0 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.
0 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.
0 ms
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 |
|---|---|---|
| js.hcaptcha.com/1/api.js | 300.0 s | 86.0 KiB |
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.
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.
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.
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.
Minifying CSS files can reduce network payload sizes. Learn how to minify CSS.
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.
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.
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
Lists the longest tasks on the main thread, useful for identifying worst contributors to input delay. Learn how to avoid long main-thread tasks
Performance issues directly impact user engagement and conversion rates.
Many navigations are performed by going back to a previous page, or forwards again. The back/forward cache (bfcache) can speed up these return navigations. Learn more about the bfcache
Performance issues directly impact user engagement and conversion rates.
| Failure reason | Failure type |
|---|---|
| Pages with cache-control:no-store header cannot enter back/forward cache. | Actionable |
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.
The title gives screen reader users an overview of the page, and search engine users rely on it heavily to determine if a page is relevant to their search. Learn more about document titles.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
html html |
Screen reader users rely on frame titles to describe the contents of frames. Learn more about frame titles.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
body > iframe#main-iframe body > iframe#main-iframe |
These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.
If a page doesn't specify a `lang` attribute, a screen reader assumes that the page is in the default language that the user chose when setting up the screen reader. If the page isn't actually in the default language, then the screen reader might not announce the page's text correctly. Learn more about the `lang` attribute.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
html html |
These are opportunities to improve the interpretation of your content by users in different locales.
One main landmark helps screen reader users navigate a web page. Learn more about landmarks.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
html html |
These items highlight common accessibility best practices.
Specifying a doctype prevents the browser from switching to quirks-mode. Learn more about the doctype declaration.
Performance issues directly impact user engagement and conversion rates.
A character encoding declaration is required. It can be done with a `<meta>` tag in the first 1024 bytes of the HTML or in the Content-Type HTTP response header. Learn more about declaring the character encoding.
Performance issues directly impact user engagement and conversion rates.
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 |
|---|---|
| Fledge | js.hcaptcha.com/1/api.js line 3, col 47111 |
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.
Search engines are unable to include your pages in search results if they don't have permission to crawl them. Learn more about crawler directives.
Performance issues directly impact user engagement and conversion rates.
| Blocking Directive Source |
|---|
head > meta |
To appear in search results, crawlers need access to your app.
The title gives screen reader users an overview of the page, and search engine users rely on it heavily to determine if a page is relevant to their search. Learn more about document titles.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
html html |
Meta descriptions may be included in search results to concisely summarize page content. Learn more about the meta description.
Performance issues directly impact user engagement and conversion rates.
Format your HTML in a way that enables crawlers to better understand your app’s content.
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.
1.09 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
1.25 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
688 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.
1.42 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.
5.00 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 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.
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.
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 |
|---|---|---|
| cdn-d8.nypl.org/s3fs-public/2020-05/NYPL_MainFacadeRev2Cam2.png | 0.0 ms | 150.0 KiB |
| assets.nypl.org/js/advocacy.js | 300.0 s | 1.1 KiB |
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 | |
|---|---|---|---|
Large amount of books sprawled across a red table. div#card-image-d0bc1d2d-c8e0-4e21-955b-403875565c86 > a#card-image-link-d0bc1d2d-c8e0-4e21-955b-403875565c86 > div#nextjsImage-card-image-84bcafa5-af9e-4a64-b266-719c559ec44a > img | /scout/_next/image?url=https%3A%2F%2Fdrupal.nypl.org%2Fsi... | 161.8 KiB | 151.1 KiB |
Lion statue in front of the Stephen A. Schwarzman Building with two red banners… div#card-image-c2e2c0b4-c8de-49ae-9f60-30407217c662 > a#card-image-link-c2e2c0b4-c8de-49ae-9f60-30407217c662 > div#nextjsImage-card-image-c72959ec-5280-48af-86ce-2c092a046c39 > img | /scout/_next/image?url=https%3A%2F%2Fdrupal.nypl.org%2Fsi... | 109.6 KiB | 98.9 KiB |
Librarian in a black dress reads a colorful picture book to a group of children… div#card-image-257e6845-aafd-4888-8338-bd20438e51e9 > a#card-image-link-257e6845-aafd-4888-8338-bd20438e51e9 > div#nextjsImage-card-image-a134c858-8cf7-4a46-8f98-e35b741b7a8d > img | /scout/_next/image?url=https%3A%2F%2Fdrupal.nypl.org%2Fsi... | 87.7 KiB | 77.0 KiB |
4 side-by-side headshots: Edwin Santana, Dr. Shana Russell, Tamara Santibañez, … div.css-ys3583 > a#event-card-image-link-0e711f69-5e47-44f7-98e4-6ed166b099fe > div#nextjsImage-event-image-0e711f69-5e47-44f7-98e4-6ed166b099fe-68764dbc-1483-4173-b0bc-041d459cda01 > img | /scout/_next/image?url=https%3A%2F%2Fdrupal.nypl.org%2Fsi... | 67.7 KiB | 66.3 KiB |
Author headshots on either side of Umrigar's book, "Missing Sam." div.css-ys3583 > a#event-card-image-link-featured-dee218d6-1ec2-4edd-8520-8a412af1d4b1 > div#nextjsImage-event-image-featured-dee218d6-1ec2-4edd-8520-8a412af1d4b1-df723cbb-51dc-4781-bf35-ef753638ca3c > img | /scout/_next/image?url=https%3A%2F%2Fdrupal.nypl.org%2Fsi... | 91.2 KiB | 65.8 KiB |
Headshots of Bethany Crystal, Saadiq Rodgers-King, and Peta-Gay Clarke alongsid… div.css-ys3583 > a#event-card-image-link-ae5a83b8-a5e3-43e7-ac46-c6a3227eebb4 > div#nextjsImage-event-image-ae5a83b8-a5e3-43e7-ac46-c6a3227eebb4-276eca99-6478-4c6e-9c52-44b7123f9598 > img | /scout/_next/image?url=https%3A%2F%2Fdrupal.nypl.org%2Fsi... | 62.2 KiB | 60.9 KiB |
A man and a young girl read from a book in braille while sitting at a colorful … div#card-image-2d5a16e8-04cc-4477-b322-25367b2d8e7e > a#card-image-link-2d5a16e8-04cc-4477-b322-25367b2d8e7e > div#nextjsImage-card-image-4727dc8c-1140-4ce1-8c8b-16f396e53b84 > img | /scout/_next/image?url=https%3A%2F%2Fdrupal.nypl.org%2Fsi... | 69.0 KiB | 59.2 KiB |
2 side-by-side headshots: Lloyd Blankfein, Hortense le Gentil div.css-ys3583 > a#event-card-image-link-fe513ce0-e808-4d00-95e3-088bc9e91ac1 > div#nextjsImage-event-image-fe513ce0-e808-4d00-95e3-088bc9e91ac1-5a2b9b13-e969-43c5-94d5-9dd45831e5f0 > img | /scout/_next/image?url=https%3A%2F%2Fdrupal.nypl.org%2Fsi... | 58.3 KiB | 57.1 KiB |
Stack of books on a wooden desk, with bookshelves in the background. div#card-image-340f7a72-51f0-4f27-b740-11c535f337d7 > a#card-image-link-340f7a72-51f0-4f27-b740-11c535f337d7 > div#nextjsImage-card-image-9f684063-4524-47b2-ad66-391fcf663520 > img | /scout/_next/image?url=https%3A%2F%2Fdrupal.nypl.org%2Fsi... | 63.2 KiB | 54.2 KiB |
Woman holding iPad in library setting. div#card-image-9b700650-d2f3-47d8-a2ce-35ef29ab5fcc > a#card-image-link-9b700650-d2f3-47d8-a2ce-35ef29ab5fcc > div#nextjsImage-card-image-05d4e2ed-034e-4236-a894-0dea2079ea6f > img | /scout/_next/image?url=https%3A%2F%2Fdrupal.nypl.org%2Fsi... | 61.9 KiB | 53.0 KiB |
A woman with glasses and a scarf behind a librarian's desk hands a book to a pa… div#card-image-af552fd5-be7f-4b69-93a6-6946b918a54e > a#card-image-link-af552fd5-be7f-4b69-93a6-6946b918a54e > div#nextjsImage-card-image-450862c7-9099-4ed3-adb5-4d67e7a768e6 > img | /scout/_next/image?url=https%3A%2F%2Fdrupal.nypl.org%2Fsi... | 57.5 KiB | 49.3 KiB |
In the foreground a stack of old books partially obscures three people research… div#card-image-9d8525ca-1d2e-404a-b524-b7f39cea9bf2 > a#card-image-link-9d8525ca-1d2e-404a-b524-b7f39cea9bf2 > div#nextjsImage-card-image-8054cb29-7544-4a4c-9d56-26c1b9b49184 > img | /scout/_next/image?url=https%3A%2F%2Fdrupal.nypl.org%2Fsi... | 54.7 KiB | 46.9 KiB |
Two kids at a desk with notebooks open and pens in hand. div#card-image-67214b72-ed49-4011-8a69-ddecc8611e2f > a#card-image-link-67214b72-ed49-4011-8a69-ddecc8611e2f > div#nextjsImage-card-image-4361a84b-b3ed-40e2-9072-526cf2c21e65 > img | /scout/_next/image?url=https%3A%2F%2Fdrupal.nypl.org%2Fsi... | 54.5 KiB | 46.7 KiB |
Colorful graphic featuring the word Welcome in many languages, including Englis… div#card-image-e4e245e8-1172-4a1f-96c7-e89b8be756ac > a#card-image-link-e4e245e8-1172-4a1f-96c7-e89b8be756ac > div#nextjsImage-card-image-bde3b5bb-a710-4f20-8367-df6569a478d2 > img | /scout/_next/image?url=https%3A%2F%2Fdrupal.nypl.org%2Fsi... | 53.4 KiB | 45.7 KiB |
Messy pile of NYPL cards with one standing up and in focus in the middle of the… div#card-image-1c1ee9c8-8d91-42b4-b596-249b294c4745 > a#card-image-link-1c1ee9c8-8d91-42b4-b596-249b294c4745 > div#nextjsImage-card-image-7f6785ad-20ac-44d2-b643-9acae9d0dd9c > img | /scout/_next/image?url=https%3A%2F%2Fdrupal.nypl.org%2Fsi... | 48.3 KiB | 41.4 KiB |
White text reads "Get Lit!" next to the cover of the book "Lake Effect." div#card-image-28f4c815-e5be-41bf-bfeb-2249823995cb > a#card-image-link-28f4c815-e5be-41bf-bfeb-2249823995cb > div#nextjsImage-card-image-3473f0d4-1336-469c-a148-64d7eba838c1 > img | /scout/_next/image?url=https%3A%2F%2Fdrupal.nypl.org%2Fsi... | 39.9 KiB | 34.2 KiB |
Schomburg Centennial '100' logo in red, green, and purple on a black background. div#card-image-9ab2eaa2-866d-42f6-ad35-ffc07058e842 > a#card-image-link-9ab2eaa2-866d-42f6-ad35-ffc07058e842 > div#nextjsImage-card-image-2b037ca0-fa65-4f78-bc39-086759840a14 > img | /scout/_next/image?url=https%3A%2F%2Fdrupal.nypl.org%2Fsi... | 30.6 KiB | 26.3 KiB |
Teal text-based graphic reads: National Poetry Month, The New York Public Libra… div#card-image-49fb4a50-c79a-4daf-9c0e-c12a7e23b10e > a#card-image-link-49fb4a50-c79a-4daf-9c0e-c12a7e23b10e > div#nextjsImage-card-image-aaff1550-a208-4b5b-8cdb-780af93393bb > img | /scout/_next/image?url=https%3A%2F%2Fdrupal.nypl.org%2Fsi... | 21.8 KiB | 18.7 KiB |
painting the cosmos a#staff-pick-card-link-7e0057e5-9e4c-4d6c-a167-073b9138950f > div.css-13k02e6 > div#nextjsImage-3234a3dc-7192-45cf-a121-c99a14a8fd1a > img | /scout/_next/image?url=https%3A%2F%2Fdrupal.nypl.org%2Fsi... | 26.5 KiB | 17.1 KiB |
Haven by Ani Katz div.css-ys3583 > a#slideshow-card-image-link-120a4b57-5c4f-45ee-8bf8-33a880606f90 > div#nextjsImage-slideshow-a0e3e293-88ec-4e7b-a6dc-09d63379ea96 > img | /scout/_next/image?url=https%3A%2F%2Fdrupal.nypl.org%2Fsi... | 32.7 KiB | 15.7 KiB |
Dark blue rectangle with gold and white Treasures exhibition logo in the center. div#card-image-ab52dbbd-b47f-4988-a9a9-393afbf39def > a#card-image-link-ab52dbbd-b47f-4988-a9a9-393afbf39def > div#nextjsImage-card-image-c2eac3ca-8a4e-4d1d-9c7a-e68fae1d9528 > img | /scout/_next/image?url=https%3A%2F%2Fdrupal.nypl.org%2Fsi... | 17.8 KiB | 15.3 KiB |
Metropolitans: New York Baseball, Class Struggle, and the People's Team div.css-ys3583 > a#slideshow-card-image-link-44d78fe7-4008-41e8-9a1d-1e2809e62aa5 > div#nextjsImage-slideshow-4b5aefec-07d2-43bd-b4f4-2d5502ccb326 > img | /scout/_next/image?url=https%3A%2F%2Fdrupal.nypl.org%2Fsi... | 31.9 KiB | 14.6 KiB |
Teal text-based graphic reads: Arab American Heritage Month. div#card-image-65883ef2-2354-4365-92e4-13584c4c8cea > a#card-image-link-65883ef2-2354-4365-92e4-13584c4c8cea > div#nextjsImage-card-image-0405d297-1e6b-4ee3-9cf2-ab51e5ca565f > img | /scout/_next/image?url=https%3A%2F%2Fdrupal.nypl.org%2Fsi... | 14.7 KiB | 12.6 KiB |
the black hunger a#staff-pick-card-link-a63a4bf1-5f5c-44b6-9f7a-deb982807923 > div.css-13k02e6 > div#nextjsImage-7d3d690d-2bab-4e95-867c-133f24fd4df0 > img | /scout/_next/image?url=https%3A%2F%2Fdrupal.nypl.org%2Fsi... | 29.2 KiB | 11.9 KiB |
Days of Love and Rage: A Story of Ordinary People Forging a Revolution div.css-ys3583 > a#slideshow-card-image-link-c67f573b-8007-4536-b79f-fd06bf2b6abe > div#nextjsImage-slideshow-ef5e6951-1d89-4887-a8bd-18b8bc5fbfdc > img | /scout/_next/image?url=https%3A%2F%2Fdrupal.nypl.org%2Fsi... | 28.8 KiB | 11.7 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 |
|---|---|
| nypl.org/ | 229 ms |
| www.nypl.org/ | 801 ms |
| www.nypl.org/ | 0.0 ms |
Time to Interactive is the amount of time it takes for the page to become fully interactive. Learn more about the Time to Interactive metric.
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.
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.
| URL | Total CPU Time | Script Evaluation | Script Parse |
|---|---|---|---|
| a.optmnstr.com/app/js/25.7ea6f63f.min.js | 468 ms | 446 ms | 0.1 ms |
| www.nypl.org/scout/_next/static/chunks/framework-3bc9684f49160ebb.js | 436 ms | 394 ms | 10 ms |
| www.nypl.org/ | 413 ms | 11 ms | 0.3 ms |
| ds-header.nypl.org/header.min.js?containerId=nypl-header | 210 ms | 152 ms | 57 ms |
| Unattributable | 198 ms | 3.7 ms | 0.0 ms |
| ds-header.nypl.org/footer.min.js?containerId=nypl-footer | 178 ms | 110 ms | 57 ms |
| www.nypl.org/scout/_next/static/chunks/pages/index-3442857d06f9fe36.js | 171 ms | 170 ms | 0.1 ms |
| www.nypl.org/scout/_next/static/chunks/pages/_app-87b548fdd4e15b52.js | 156 ms | 97 ms | 55 ms |
| www.googletagmanager.com/gtm.js?id=GTM-RKWC | 143 ms | 121 ms | 16 ms |
| www.googletagmanager.com/gtag/js?id=G-P03CNT7C31&cx=c>m=4e64h1 | 137 ms | 114 ms | 21 ms |
| a.optmnstr.com/app/js/27.24395f55.min.js | 75 ms | 75 ms | 0.1 ms |
| /_Incapsula_Resource?SWJIYLWA=5074a744e2e3d891814e9a2dace... | 65 ms | 44 ms | 3.1 ms |
| www.nypl.org/scout/_next/static/chunks/8548-197d8009f521d522.js | 53 ms | 1.0 ms | 51 ms |
Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this. Learn how to minimize main-thread work
Performance issues directly impact user engagement and conversion rates.
| Category | Time Spent |
|---|---|
| Script Evaluation | 2.0 s |
| Other | 367 ms |
| Script Parsing & Compilation | 304 ms |
| Style & Layout | 197 ms |
| Rendering | 67 ms |
| Garbage Collection | 52 ms |
| Parse HTML & CSS | 31 ms |
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 |
|---|---|---|
| www.nypl.org/scout/_next/static/css/324bf731318319c7.css | 15.5 KiB | 15.3 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 |
|---|---|---|
| ds-header.nypl.org/footer.min.js?containerId=nypl-footer | 551.9 KiB | 449.0 KiB |
| www.nypl.org/scout/_next/static/chunks/pages/_app-87b548fdd4e15b52.js | 530.1 KiB | 447.2 KiB |
| ds-header.nypl.org/header.min.js?containerId=nypl-header | 555.9 KiB | 445.2 KiB |
| www.nypl.org/scout/_next/static/chunks/8548-197d8009f521d522.js | 572.9 KiB | 397.6 KiB |
| www.nypl.org/scout/_next/static/chunks/fec483df-fabc1ee4c428b220.js | 98.3 KiB | 98.3 KiB |
| www.googletagmanager.com/gtm.js?id=GTM-RKWC | 172.0 KiB | 64.0 KiB |
| www.googletagmanager.com/gtag/js?id=G-P03CNT7C31&cx=c>m=4e64h1 | 171.6 KiB | 53.6 KiB |
| www.nypl.org/scout/_next/static/chunks/framework-3bc9684f49160ebb.js | 64.9 KiB | 34.4 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 | |
|---|---|
NYPL Main Building Facade div.css-125sda2 > div.css-0 > div.css-0 > img.css-1uyh2tv | cdn-d8.nypl.org/s3fs-public/2020-05/NYPL_MainFacadeRev2Cam2.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.
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 |
|---|---|
| Unload event listeners are deprecated and will be removed. | |
| Synchronous XMLHttpRequest on the main thread is deprecated because of its detrimental effects to the end user's experience. For more help, check https://xhr.spec.whatwg.org/. |
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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