Lighthouse Desktop

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

SCORE

GRADE

FIX

REVIEW

PASS

INFO

Detailed Report

Audit breakdown by category with detailed findings.

Performance

Insights

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Your first network request is the most important. Reduce its latency by avoiding redirects, ensuring a fast server response, and enabling text compression.

Why this matters

Performance issues directly impact user engagement and conversion rates.

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.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Est Savings
/wp-content/themes/laura/dist/assets/GuggenheimSans-BoldI...	55 ms
/wp-content/themes/laura/dist/assets/GuggenheimSans-Itali...	55 ms
/wp-content/themes/laura/dist/assets/GuggenheimSans-Regul...	10 ms
/wp-content/themes/laura/dist/assets/GuggenheimSans-Bold-...	10 ms

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

items: [map[duration:1454.487 label:Time to first byte subpart:timeToFirstByte] map[duration:1408.082 label:Element render delay subpart:elementRenderDelay]]

lhId: page-0-VIDEO

nodeLabel: A variety of people encounter paintings and sculptures in the Guggenheim New Yo…

path: 1,HTML,1,BODY,4,DIV,2,DIV,2,DIV,0,MAIN,1,ARTICLE,0,HEADER,0,DIV,0,DIV,0,DIV,0,VIDEO

selector: div._mediaBannerHandler_egjgm_2 > div > div._videoBanner_1ri24_2 > video

snippet: <video autoplay="" loop="" playsinline="" aria-label="A variety of people encounter paintings and sculptures in the Guggenheim N…" tabindex="0" role="region" src="blob:https://www.guggenheim.org/adb4c68b-e3c3-43a4-ac80-958823abcd9c" style="aspect-ratio: unset;">

Avoid chaining critical requests by reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load.

Why this matters

Performance issues directly impact user engagement and conversion rates.

description: [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints help the browser establish a connection earlier in the page load, saving time when the first request for that origin is made. The following are the origins that the page preconnected to.

title: Preconnected origins

value: no origins were preconnected

description: Add [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints to your most important origins, but try to use no more than 4.

title: Preconnect candidates

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
connect.facebook.net/en_US/fbevents.js	1200.0 s	96.6 KiB
/signals/config/606242276164907?v=2.9.303&r=stable&domain...	1200.0 s	46.4 KiB
js.adsrvr.org/up_loader.1.1.0.js	0.0 ms	12.3 KiB
6141130.collect.igodigital.com/collect.js	0.0 ms	2.4 KiB
js.adsrvr.org/universal_pixel.js	0.0 ms	958 B
js.adsrvr.org/universal_pixel.js	0.0 ms	465 B
js.adsrvr.org/universal_pixel.js	0.0 ms	465 B
js.adsrvr.org/universal_pixel.js	0.0 ms	465 B
/tr/?id=606242276164907&ev=PageView&dl=https%3A%2F%2Fwww....	0.0 ms	19 B
/tr/?id=606242276164907&ev=ViewContent&dl=https%3A%2F%2Fw...	0.0 ms	16 B
/tr/?id=606242276164907&ev=PageView&dl=https%3A%2F%2Fwww....	0.0 ms	16 B
/tr/?id=606242276164907&ev=ViewContent&dl=https%3A%2F%2Fw...	0.0 ms	16 B

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
Oil painting by Gabriele Münter featuring a young girl with blonde hair with a … `div.space-48-64-above > a > picture.aspect-container > img.aspect-image`	/wp-content/uploads/2025/09/Munter-1983.11_Cropped16x9-15...	335.9 KiB	185.9 KiB
Oil painting by Franz Marc featuring a vibrantly colored abstract mountainous l… `div.space-48-64-above > a > picture.aspect-container > img.aspect-image`	www.guggenheim.org/wp-content/uploads/2025/04/image001-e1753279408942.jpg	317.5 KiB	167.5 KiB
Robert Rauschenberg, Untitled, 1963. Oil, silkscreen ink, metal, and plastic on… `div.space-48-64-above > a > picture.aspect-container > img.aspect-image`	/wp-content/uploads/2025/07/Rauschenberg_Web_Image-1536x8...	316.9 KiB	166.9 KiB
A series of large brightly colored steel, stainless steel, anodized aluminum an… `div.space-48-64-above > a > picture.aspect-container > img.aspect-image`	/wp-content/uploads/2026/03/Carol-Bove-exh_ph044_Horizont...	211.6 KiB	67.0 KiB
Three bronze-colored statues of women dancing placed on a white pedestal in the… `div.space-48-64-above > a > picture.aspect-container > img.aspect-image`	/wp-content/uploads/2016/04/installation-srgm-thannhauser...	117.8 KiB	36.0 KiB

Requests are blocking the page's initial render, which may delay LCP. Deferring or inlining can move these network requests out of the critical path.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Transfer Size
www.guggenheim.org/wp-content/themes/laura/dist/assets/main-DfEELHKc.css	14.5 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.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 309 ms

URL	Time Spent
guggenheim.org/	309 ms
www.guggenheim.org/	0.0 ms

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 1.2 s

URL	Time Spent
www.guggenheim.org/	1.3 s

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

TTI

The maximum potential First Input Delay that your users could experience is the duration of the longest task. Learn more about the Maximum Potential First Input Delay metric.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Diagnostics

Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. Learn how to reduce unused JavaScript.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 290 ms 493.4 KiB

URL	Transfer Size	Est Savings
/wp-content/themes/laura/dist/assets/MediaBannerHandler-C...	152.3 KiB	82.0 KiB
www.googletagmanager.com/gtag/js?id=G-X07D03RV1Q&cx=c&gtm=4e64k0h1	176.0 KiB	69.6 KiB
www.googletagmanager.com/gtm.js?id=GTM-PNXM	161.4 KiB	66.9 KiB
www.googletagmanager.com/gtag/destination?id=AW-726168780&cx=c&gtm=4e64k0h1	144.6 KiB	66.2 KiB
www.googletagmanager.com/gtag/destination?id=DC-5549924&cx=c&gtm=4e64k0h1	129.8 KiB	65.2 KiB
www.googletagmanager.com/gtag/destination?id=DC-4001624&cx=c&gtm=4e64k0h1	131.2 KiB	65.2 KiB
www.guggenheim.org/wp-content/themes/laura/dist/assets/vendor-ojHIal3q.js	133.5 KiB	46.2 KiB
connect.facebook.net/en_US/fbevents.js	96.5 KiB	32.1 KiB

Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this. Learn how to reduce Javascript execution time.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Total CPU Time	Script Evaluation	Script Parse
www.guggenheim.org/wp-content/themes/laura/dist/assets/vendor-ojHIal3q.js	597 ms	527 ms	13 ms
/wp-content/themes/laura/dist/assets/MediaBannerHandler-C...	440 ms	314 ms	9.7 ms
Unattributable	335 ms	5.8 ms	0.0 ms
www.guggenheim.org/	136 ms	73 ms	6.3 ms
www.googletagmanager.com/gtag/js?id=G-X07D03RV1Q&cx=c&gtm=4e64k0h1	108 ms	90 ms	17 ms
/signals/config/606242276164907?v=2.9.303&r=stable&domain...	96 ms	88 ms	5.5 ms
www.googletagmanager.com/gtm.js?id=GTM-PNXM	79 ms	65 ms	12 ms
js-agent.newrelic.com/nr-spa-1.313.1.min.js	70 ms	55 ms	2.0 ms
www.googletagmanager.com/gtag/destination?id=DC-4001624&cx=c&gtm=4e64k0h1	55 ms	44 ms	11 ms
www.googletagmanager.com/gtag/destination?id=AW-726168780&cx=c&gtm=4e64k0h1	52 ms	43 ms	8.9 ms

Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this. Learn how to minimize main-thread work

Why this matters

Performance issues directly impact user engagement and conversion rates.

Category	Time Spent
Script Evaluation	1.4 s
Other	509 ms
Script Parsing & Compilation	108 ms
Style & Layout	76 ms
Garbage Collection	36 ms
Parse HTML & CSS	17 ms
Rendering	11 ms

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
/v1/chunk/5clQbgWMD01j02yDU1hmSo2kCR9sCX1FpApeCq4lpoCot7n...	10.3 MiB
/v1/chunk/XSvUBn6iFBYGkFbEdEQ8bZ7Zd3ulw31202S4mRuHO01l2M7...	10.1 MiB
/v1/chunk/55Ydw02wkpdbcCJ802DQ1X7UNrbUlYK3VzzCPi7lFdzwEu0...	4.6 MiB
/v1/chunk/7wr022RVffYDWmKRxzAR9dyyJTK02JF8PP0201mvS11L5Uk...	2.1 MiB
www.guggenheim.org/wp-content/uploads/1921/01/53.1350_ph_web-1.jpg	694.7 KiB
/wp-content/uploads/2026/01/ArchitectureTour_20250816_060...	583.1 KiB
/wp-content/uploads/2025/09/Munter-1983.11_Cropped16x9-15...	336.3 KiB
www.guggenheim.org/wp-content/uploads/2025/04/image001-e1753279408942.jpg	317.9 KiB
/wp-content/uploads/2025/07/Rauschenberg_Web_Image-1536x8...	317.3 KiB
www.guggenheim.org/wp-content/uploads/2026/03/2019-018_V2-scaled.jpg	236.7 KiB

Set an explicit width and height on image elements to reduce layout shifts and improve CLS. Learn how to set image dimensions

Why this matters

Performance issues directly impact user engagement and conversion rates.

	URL
Oil painting by Gabriele Münter featuring a young girl with blonde hair with a … `div.space-48-64-above > a > picture.aspect-container > img.aspect-image`	/wp-content/uploads/2025/09/Munter-1983.11_Cropped16x9-15...
Robert Rauschenberg, Untitled, 1963. Oil, silkscreen ink, metal, and plastic on… `div.space-48-64-above > a > picture.aspect-container > img.aspect-image`	/wp-content/uploads/2025/07/Rauschenberg_Web_Image-1536x8...
Oil painting by Franz Marc featuring a vibrantly colored abstract mountainous l… `div.space-48-64-above > a > picture.aspect-container > img.aspect-image`	www.guggenheim.org/wp-content/uploads/2025/04/image001-e1753279408942.jpg
Three bronze-colored statues of women dancing placed on a white pedestal in the… `div.space-48-64-above > a > picture.aspect-container > img.aspect-image`	/wp-content/uploads/2016/04/installation-srgm-thannhauser...
A series of large brightly colored steel, stainless steel, anodized aluminum an… `div.space-48-64-above > a > picture.aspect-container > img.aspect-image`	/wp-content/uploads/2026/03/Carol-Bove-exh_ph044_Horizont...
Kurt Schwitters, Mz 199, 1921. Gouache, paper, and fabric collage with paperboa… `section._collection_1a88f_20 > a._focus_1a88f_53 > picture > img`	www.guggenheim.org/wp-content/uploads/1921/01/53.1350_ph_web-1.jpg
Children and adults seated in a circle on the floor of the Solomon R. Guggenhei… `div._image_1w9vn_290 > a > picture.aspect-container > img.aspect-image`	/wp-content/uploads/2023/09/gen-event-guggenheim-for-all-...
Bright yellow tote bags with the Guggenheim name are folded, bound with white p… `div > a > picture.aspect-container > img.aspect-image`	/wp-content/uploads/2024/11/gen-retail-guggenheim-logo-to...
Two women, one with medium-length brown hair and the other with long red hair, … `div > a > picture.aspect-container > img.aspect-image`	/wp-content/uploads/2022/11/gen-membership-member-tote-72...
A museum educator leads a small group on a tour along one of the Guggenheim’s c… `div._event_1xvce_2 > a > picture.aspect-container > img.aspect-image`	/wp-content/uploads/2026/01/ArchitectureTour_20250816_060...
2026 Poet in Residence Patrick Rosal leans on a wall and smiles at the Guggenhe… `div._image_1w9vn_290 > a > picture.aspect-container > img.aspect-image`	/wp-content/uploads/2026/04/Patrick-Rosal_ph-5-LARGE-JPG-...
A large steel sculpture, folded into an angular, abstracted form, is balanced d… `div._event_1xvce_2 > a > picture.aspect-container > img.aspect-image`	www.guggenheim.org/wp-content/uploads/2026/03/2019-018_V2-scaled.jpg
logo-guggenheim-bilbao `div > picture.span-three > a > img`	www.guggenheim.org/wp-content/uploads/2024/10/logo-guggenheim-bilbao.svg
logo-peggy-guggenheim `div > picture.span-three > a > img`	www.guggenheim.org/wp-content/uploads/2024/10/logo-peggy-guggenheim.svg
logo-global-partners-horizontal-2025 `div.container > div._partners_u6whb_179 > div > img`	/wp-content/uploads/2025/01/logo-global-partners-horizont...
logo-guggenheim-abu-dhabi `div > picture.span-three > a > img`	www.guggenheim.org/wp-content/uploads/2024/10/logo-guggenheim-abu-dhabi.svg
unesco-wh-white-20201116 `div._logo_u6whb_205 > div > picture.span-twelve > img`	www.guggenheim.org/wp-content/uploads/2020/11/unesco-wh-white-20201116.svg
logo-guggenheim-new-york `div._constellation_u6whb_8 > div > picture.span-three > img`	www.guggenheim.org/wp-content/uploads/2024/10/logo-guggenheim-new-york.svg

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

●Layout shift culprits

●Optimize DOM size

●Forced reflow

●Modern HTTP

●Optimize viewport for mobile

●Minify CSS

●Minify JavaScript

●Reduce unused CSS

●User Timing marks and measures 14 user timings

●Avoid long main-thread tasks 10 long tasks found

●Page didn't prevent back/forward cache restoration

●Network Requests

●Network Round Trip Times 100 ms

●Server Backend Latencies 180 ms

●Tasks

●Diagnostics

●Metrics

●Screenshot Thumbnails

●Final Screenshot

●Script Treemap Data

●Resources Summary

●Avoid large layout shifts 1 layout shift found

○INP breakdown

○LCP request discovery

○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.

Navigation

A value greater than 0 implies an explicit navigation ordering. Although technically valid, this often creates frustrating experiences for users who rely on assistive technologies. Learn more about the `tabindex` attribute.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Pause video `div > div._videoBanner_1ri24_2 > div._overlaySvgs_1ri24_38 > svg`
Unmute video `div > div._videoBanner_1ri24_2 > div._overlaySvgs_1ri24_38 > svg`
Learn more `div > div._videoBanner_1ri24_2 > div._overlaySvgs_1ri24_38 > svg`

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

●Background and foreground colors have a sufficient contrast ratio

●Document has a `<title>` element

●`<html>` element has a `[lang]` attribute

●`<html>` element has a valid value for its `[lang]` attribute

●Links are distinguishable without relying on color.

●Links have a discernible name

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

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

●Touch targets have sufficient size and spacing.

●Heading elements appear in a sequentially-descending order

●Document has a main landmark.

●Deprecated ARIA roles were not used

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

●All heading elements contain content.

●Uses ARIA roles only on compatible elements

●Elements with visible text labels have matching accessible names.

○`[accesskey]` values are unique

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

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

○ARIA input fields have accessible names

○ARIA `meter` elements have accessible names

○ARIA `progressbar` elements have accessible names

○Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.

○`[role]`s are contained by their required parent element

○Elements with the `role=text` attribute do not have focusable descendents.

○ARIA toggle fields have accessible names

○ARIA `tooltip` elements have accessible names

○ARIA `treeitem` elements have accessible names

○The page contains a heading, skip link, or landmark region

○`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.

○Definition list items are wrapped in `<dl>` elements

○ARIA IDs are unique

○No form fields have multiple labels

○`<frame>` or `<iframe>` elements have a title

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

○Input buttons have discernible text.

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

○Form elements have associated labels

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

○`<object>` elements have alternate text

○Select elements have associated label elements.

○Skip links are focusable.

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

○`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.

○`[lang]` attributes have a valid value

○Tables have different content in the summary attribute and `<caption>`.

○Image elements do not have `[alt]` attributes that are redundant text.

○Identical links have the same purpose.

○Tables use `<caption>` instead of cells with the `[colspan]` attribute to indicate a caption.

○`<td>` elements in a large `<table>` have one or more table headers.

Best Practices

General

Deprecated APIs will eventually be removed from the browser. Learn more about deprecated APIs.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Deprecation / Warning	Source
AttributionReporting	connect.facebook.net/en_US/fbevents.js line 279, col 769

●Uses HTTPS

●Avoids third-party cookies

●Allows users to paste into input fields

●Avoids requesting the geolocation permission on page load

●Avoids requesting the notification permission on page load

●Displays images with correct aspect ratio

●Serves images with appropriate resolution

●Page has the HTML doctype

●Properly defines charset

●No browser errors logged to the console

●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

●Page has valid source maps

○Redirects HTTP traffic to HTTPS

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.

Crawling and Indexing

Search engines may use `href` attributes on links to crawl websites. Ensure that the `href` attribute of anchor elements links to an appropriate destination, so more pages of the site can be discovered. Learn how to make links crawlable

Why this matters

Performance issues directly impact user engagement and conversion rates.

Uncrawlable Link
div._mediaBannerHandler_egjgm_2 > div > div.mediabanner-caption > a `div._mediaBannerHandler_egjgm_2 > div > div.mediabanner-caption > a`

To appear in search results, crawlers need access to your app.

○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

●robots.txt is valid

●Image elements have `[alt]` attributes

●Document has a valid `hreflang`

○Document has a valid `rel=canonical`