Lighthouse Mobile
· 0 checks — Mobile Lighthouse audit -- Performance, Accessibility, Best Practices, and SEO category breakdown.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.
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
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.
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.
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.
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.
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.
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.
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 | |
|---|---|---|---|
Charity Navigator Four-Star Rating div#block-block-15 > p > a > img | www.aspca.org/sites/default/files/four-star-rating-badge-full-color-800.png | 37.1 KiB | 35.4 KiB |
ASPCA header#header > div#navigation > h1#site-name > a.header__site-link | www.aspca.org/sites/all/themes/aspca_2015/images/spritesheet.png?1775660827278 | 44.0 KiB | 19.9 KiB |
… div.views-field > div.field-content > picture > img | /sites/default/files/styles/feature_slider_1502x700/publi... | 20.7 KiB | 16.0 KiB |
These insights are also available in the Chrome DevTools Performance Panel - record a trace to view more detailed information.
Time to Interactive is the amount of time it takes for the page to become fully interactive. Learn more about the Time to Interactive metric.
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.
| URL | Time Spent |
|---|---|
| aspca.org/ | 773 ms |
| www.aspca.org/ | 774 ms |
| www.aspca.org/ | 0.0 ms |
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 |
|---|---|
The Latest
April 10, 2026
The ASPCA Turns 160: Celebrating Our History
For 160… div.panel-display > div.panel-panel > div > div.panel-pane | 0.828 |
The Latest
April 10, 2026
The ASPCA Turns 160: Celebrating Our History
For 160… div.panel-display > div.panel-panel > div > div.panel-pane | 0.379 |
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.
Diagnostics
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 |
|---|---|---|
| /sites/default/files/js/js_Pt6OpwTd6jcHLRIjrE-eSPLWMxWDkc... | 53.1 KiB | 11.2 KiB |
| /sites/default/files/js/js_8qRI5qnYmSoU6ibmEnAEv6ryFBtaLk... | 15.5 KiB | 8.5 KiB |
| /sites/default/files/js/js_yPZ35hmNLkrlT7zeO2JrsnVtwDGF9l... | 19.0 KiB | 7.4 KiB |
| /sites/default/files/js/js_-2fEHdda3B69ox1dN0zeVBhGavE3gX... | 10.5 KiB | 3.3 KiB |
| /sites/default/files/js/js_KQG91WCueU0sxOl_nF-0TPSQW4fMy4... | 7.9 KiB | 3.1 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 |
|---|---|---|
| /sites/default/files/css/css_qYHyMsWX8pr57oBfSY6n7lbd_QPE... | 66.7 KiB | 60.3 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.
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.
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 | 8.5 s |
| Other | 2.1 s |
| Script Parsing & Compilation | 1.6 s |
| Style & Layout | 982 ms |
| Garbage Collection | 291 ms |
| Parse HTML & CSS | 220 ms |
| Rendering | 137 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 | |
|---|---|
Charity Navigator Four-Star Rating div#block-block-15 > p > a > img | www.aspca.org/sites/default/files/four-star-rating-badge-full-color-800.png |
… div.views-field > div.field-content > picture > img | /sites/default/files/styles/feature_slider_1502x700/publi... |
… div.views-field > div.field-content > picture > img | /sites/default/files/styles/feature_slider_1502x700/publi... |
… div.views-field > div.field-content > picture > img | /sites/default/files/styles/feature_slider_1502x700/publi... |
div#block-block-15 > p > a > img div#block-block-15 > p > a > img | widgets.guidestar.org/TransparencySeal/6907248 |
puppies behind fence div > div.panel-pane > p > img | www.aspca.org/sites/all/modules/contrib/lazyloader/image_placeholder.gif |
placeholder div > div.panel-pane > span > img.lazyloader-icon | |
placeholder div.featured-story > div.thumbnail > a > img.lazyloader-icon | |
placeholder div.featured-story > div.thumbnail > a > img.lazyloader-icon | |
placeholder div.featured-story > div.thumbnail > a > img.lazyloader-icon | |
placeholder div.featured-story > div.thumbnail > a > img.lazyloader-icon | |
placeholder div.featured-story > div.thumbnail > a > img.lazyloader-icon | |
placeholder div.featured-story > div.thumbnail > a > img.lazyloader-icon | |
placeholder div.featured-story > div.thumbnail > a > img.lazyloader-icon | |
placeholder div.featured-story > div.thumbnail > a > img.lazyloader-icon | |
placeholder div.featured-story > div.thumbnail > a > img.lazyloader-icon | |
placeholder div.featured-story > div.thumbnail > a > img.lazyloader-icon | |
placeholder div.featured-story > div.thumbnail > a > img.lazyloader-icon | |
placeholder div.featured-story > div.thumbnail > a > img.lazyloader-icon | |
placeholder div.featured-story > div.thumbnail > a > img.lazyloader-icon | |
placeholder div.featured-story > div.thumbnail > a > img.lazyloader-icon | |
placeholder div.featured-story > div.thumbnail > a > img.lazyloader-icon | |
placeholder div.featured-story > div.thumbnail > a > img.lazyloader-icon | |
placeholder div.featured-story > div.thumbnail > a > img.lazyloader-icon | |
placeholder div.featured-story > div.thumbnail > a > img.lazyloader-icon | |
placeholder div.featured-story > div.thumbnail > a > img.lazyloader-icon | |
placeholder div > div.panel-pane > p > img.lazyloader-icon |
More information about the performance of your application. These numbers don't directly affect the Performance score.
Accessibility
These checks highlight opportunities to improve the accessibility of your web app. Automatic detection can only detect a subset of issues and does not guarantee the accessibility of your web app, so manual testing is also encouraged.
Contrast
Low-contrast text is difficult or impossible for many users to read. Learn how to provide sufficient color contrast.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
April 10, 2026 div.view-content > div.views-row > div.timestamp > span.date-display-single |
The ASPCA Turns 160: Celebrating Our History div.views-row > div.views-field > span.field-content > a |
April 14, 2026 div.view-content > div.views-row > div.timestamp > span.date-display-single |
Join Us for Our Sweet 160th Adoption Bash! div.views-row > div.views-field > span.field-content > a |
https://secure.aspca.org/donate/joinaspca?ms=wb_lpf_homepage-featuredhighlight-… div.cycle-carousel-wrap > div.featured-story > div.link > a |
https://www.aspca.org/news/elio-cant-say-no-cheesy-treat-or-new-best-friend div.cycle-carousel-wrap > div.featured-story > div.link > a |
©2026 The American Society for the Prevention of Cruelty to Animals. All rights… div.l-footer-inner > div.region > div#block-block-15 > p |
Our Partnerships div.l-footer-inner > div.region > div#block-block-86 > h4 |
Underwritten by Independence American Insurance Company div#block-block-86 > ul.partnerships > li > p |
These are opportunities to improve the legibility of your content.
Names and labels
Informative elements should aim for short, descriptive alternate text. Decorative elements can be ignored with an empty alt attribute. Learn more about the `alt` attribute.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
div#block-block-15 > p > a > img div#block-block-15 > p > a > img |
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.region > div#block-block-15 > p > a div.region > div#block-block-15 > p > 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.
Tables and lists
Screen readers have a specific way of announcing lists. Ensuring proper list structure aids screen reader output. Learn more about proper list structure.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
Will You Be the Hero They're Hoping For?
Just 63¢ a day can help rescue and pro… div.view > div.view-content > div.item-list > ul.rslides1 |
These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.
Best practices
Disabling zooming is problematic for users with low vision who rely on screen magnification to properly see the contents of a web page. Learn more about the viewport meta tag.
Informational: a Permissions-Policy directive showing feature -> allowed origins.
Source: MDN Permissions-Policy
| Failing Elements |
|---|
head > meta head > meta |
These items highlight common accessibility best practices.
Best Practices
Trust and Safety
All sites should be protected with HTTPS, even ones that don't handle sensitive data. This includes avoiding mixed content, where some resources are loaded over HTTP despite the initial request being served over HTTPS. HTTPS prevents intruders from tampering with or passively listening in on the communications between your app and your users, and is a prerequisite for HTTP/2 and many new web platform APIs. Learn more about HTTPS.
Performance issues directly impact user engagement and conversion rates.
| Insecure URL | Request Resolution |
|---|---|
| www.aspca.org/ | Allowed |
General
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 |
|---|---|
| AttributionReporting |
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.
| Description |
|---|
ReferenceError: fbq is not defined
at <anonymous>:1:1
at https://www.googletagmanager.com/gtm.js?id=GTM-PFNDHJ:1045:429
at https://www.googletagmanager.com/gtm.js?id=GTM-PFNDHJ:1046:132
at uR (https://www.googletagmanager.com/gtm.js?id=GTM-PFNDHJ:1047:31)
at Md.tR (https://www.googletagmanager.com/gtm.js?id=GTM-PFNDHJ:1044:92)
at Md.<anonymous> (https://www.googletagmanager.com/gtm.js?id=GTM-PFNDHJ:428:187)
at k.apply (https://www.googletagmanager.com/gtm.js?id=GTM-PFNDHJ:354:466)
at fb (https://www.googletagmanager.com/gtm.js?id=GTM-PFNDHJ:317:719)
at eb (https://www.googletagmanager.com/gtm.js?id=GTM-PFNDHJ:317:470)
at Md.<anonymous> (https://www.googletagmanager.com/gtm.js?id=GTM-PFNDHJ:378:473) |
ReferenceError: fbq is not defined
at <anonymous>:1:1
at https://www.googletagmanager.com/gtm.js?id=GTM-PFNDHJ:1045:429
at https://www.googletagmanager.com/gtm.js?id=GTM-PFNDHJ:1046:132
at uR (https://www.googletagmanager.com/gtm.js?id=GTM-PFNDHJ:1047:31)
at Md.tR (https://www.googletagmanager.com/gtm.js?id=GTM-PFNDHJ:1044:92)
at Md.<anonymous> (https://www.googletagmanager.com/gtm.js?id=GTM-PFNDHJ:428:187)
at k.apply (https://www.googletagmanager.com/gtm.js?id=GTM-PFNDHJ:354:466)
at fb (https://www.googletagmanager.com/gtm.js?id=GTM-PFNDHJ:317:719)
at eb (https://www.googletagmanager.com/gtm.js?id=GTM-PFNDHJ:317:470)
at Md.<anonymous> (https://www.googletagmanager.com/gtm.js?id=GTM-PFNDHJ:378:473) |
SEO
These checks ensure that your page is following basic search engine optimization advice. There are many additional factors Lighthouse does not score here that may affect your search ranking, including performance on Core Web Vitals. Learn more about Google Search Essentials.
Content Best Practices
Informative elements should aim for short, descriptive alternate text. Decorative elements can be ignored with an empty alt attribute. Learn more about the `alt` attribute.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
div#block-block-15 > p > a > img div#block-block-15 > p > a > img |
Format your HTML in a way that enables crawlers to better understand your app’s content.