Lighthouse Mobile

· 0 checks — Mobile 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.

A forced reflow occurs when JavaScript queries geometric properties (such as offsetWidth) after styles have been invalidated by a change to the DOM state. This can result in poor performance. Learn more about forced reflows and possible mitigations.

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:source label:Top function call valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]

items: [map[reflowTime:75.235 source:map[column:27323 line:2 type:source-location url:https://cdnjs.runsignup.com/ajax/libs/jquery/3.7.1/jquery.min.js urlProvider:network]]]

headings: [map[key:source label:Source valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]

items: [map[reflowTime:64.653 source:map[type:text value:[unattributed]]] map[reflowTime:3.734 source:map[column:14 line:1 type:source-location url:https://d368g9lw5ileu7.cloudfront.net/js/infoBlog/_static/js/main.min.bOg6BY.js urlProvider:network]] map[reflowTime:4.046 source:map[column:5140 line:0 type:source-location url:https://cdnjs.runsignup.com/ajax/libs/tiny-slider/2.9.4/min/tiny-slider.js urlProvider:network]] map[reflowTime:0.598 source:map[column:5511 line:0 type:source-location url:https://cdnjs.runsignup.com/ajax/libs/tiny-slider/2.9.4/min/tiny-slider.js urlProvider:network]] map[reflowTime:0.276 source:map[column:6513 line:0 type:source-location url:https://cdnjs.runsignup.com/ajax/libs/tiny-slider/2.9.4/min/tiny-slider.js urlProvider:network]] map[reflowTime:58.071 source:map[column:16536 line:0 type:source-location url:https://cdnjs.runsignup.com/ajax/libs/tiny-slider/2.9.4/min/tiny-slider.js urlProvider:network]] map[reflowTime:7.793 source:map[column:16784 line:0 type:source-location url:https://cdnjs.runsignup.com/ajax/libs/tiny-slider/2.9.4/min/tiny-slider.js urlProvider:network]] map[reflowTime:4.451 source:map[column:12830 line:0 type:source-location url:https://cdnjs.runsignup.com/ajax/libs/tiny-slider/2.9.4/min/tiny-slider.js urlProvider:network]]]

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
div#tns1-item0 > figure.image-holder > picture > img `div#tns1-item0 > figure.image-holder > picture > img`	/img/infoBlog/runsignup/2025/09/catholic-health-suffolk-c...	34.0 KiB	21.5 KiB
div.wp-block-group > div.wp-block-group__inner-container > figure.ta-center > img `div.wp-block-group > div.wp-block-group__inner-container > figure.ta-center > img`	/img/infoBlog/runsignup/aiChatbotSignupLogo.bPctu3.png	7.2 KiB	7.0 KiB

Optimize LCP by making the LCP image discoverable from the HTML immediately, and avoiding lazy-loading

Why this matters

Performance issues directly impact user engagement and conversion rates.

lhId: page-0-IMG

nodeLabel: div#tns1-item0 > figure.image-holder > picture > img

path: 1,HTML,1,BODY,3,DIV,0,MAIN,0,ARTICLE,0,DIV,0,SECTION,1,DIV,3,DIV,0,DIV,0,DIV,0,FIGURE,0,PICTURE,2,IMG

selector: div#tns1-item0 > figure.image-holder > picture > img

snippet: <img sizes="100vw" alt="" width="1921" height="869" src="https://d368g9lw5ileu7.cloudfront.net/img/infoBlog/runsignup/2025/09/catho…">

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

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

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	Duration
cdnjs.runsignup.com/ajax/libs/jqueryui/1.14.1/jquery-ui.min.js	66.1 KiB	609 ms
cdnjs.runsignup.com/ajax/libs/jquery/3.7.1/jquery.min.js	30.1 KiB	1.1 s
d368g9lw5ileu7.cloudfront.net/js/windows.min.bz27OH.js	1.1 KiB
/us-east-1-src/prod/iconfonts/fc33fc7151664f109ef322fa866...	4.1 KiB	786 ms
d368g9lw5ileu7.cloudfront.net/css/rsuInfoBlog.scss.rsu.min.bP0dop.css	42.3 KiB	1.2 s
d368g9lw5ileu7.cloudfront.net/js/utils.min.bP4uUd.js	10.2 KiB
d368g9lw5ileu7.cloudfront.net/js/session.min.bN4VU_.js	924 B	151 ms

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
/s/roboto/v51/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMaxKUBHMdazT...	5.0 ms
/s/roboto/v51/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMawCUBHMdazT...	5.0 ms

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

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

TTI

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Diagnostics

Reduce unused rules from stylesheets and defer CSS not used for above-the-fold content to decrease bytes consumed by network activity. Learn how to reduce unused CSS.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 90 ms 37.0 KiB

URL	Transfer Size	Est Savings
d368g9lw5ileu7.cloudfront.net/css/rsuInfoBlog.scss.rsu.min.bP0dop.css	41.9 KiB	37.0 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.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 150 ms 300.2 KiB

URL	Transfer Size	Est Savings
www.googletagmanager.com/gtag/js?id=G-QKEVS8BTWC&cx=c&gtm=4e64k0	169.1 KiB	109.4 KiB
www.googletagmanager.com/gtag/js?id=G-QKEVS8BTWC	169.1 KiB	67.2 KiB
www.googletagmanager.com/gtag/js?id=G-Q17E71D32R	156.9 KiB	65.0 KiB
cdnjs.runsignup.com/ajax/libs/jqueryui/1.14.1/jquery-ui.min.js	65.6 KiB	58.6 KiB

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
Style & Layout	1.1 s
Script Evaluation	925 ms
Other	592 ms
Script Parsing & Compilation	248 ms
Rendering	215 ms
Parse HTML & CSS	71 ms

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

Why this matters

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
Pages whose main resource has cache-control:no-store cannot enter back/forward cache.	Not actionable
Back/forward cache is disabled because some JavaScript network request received resource with Cache-Control: no-store header.	Not actionable

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

●Use efficient cache lifetimes

●Layout shift culprits

●Document request latency

●Optimize DOM size

●LCP breakdown

●Modern HTTP

●Optimize viewport for mobile

●Minify CSS

●Minify JavaScript

●Avoids enormous network payloads Total size was 1,051 KiB

●User Timing marks and measures 10 user timings

●JavaScript execution time 1.1 s

●Avoid long main-thread tasks 11 long tasks found

●Avoid non-composited animations 1 animated element found

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

●Network Requests

●Network Round Trip Times 10 ms

●Server Backend Latencies 30 ms

●Tasks

●Diagnostics

●Metrics

●Screenshot Thumbnails

●Final Screenshot

●Script Treemap Data

●Resources Summary

●Avoid multiple page redirects

●Initial server response time was short Root document took 30 ms

●Avoid large layout shifts 1 layout shift found

○INP breakdown

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.

ARIA

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.

Why this matters

Informational: a Permissions-Policy directive showing feature -> allowed origins.

Source: MDN Permissions-Policy

Failing Elements
Mighty Hamptons Steve Tarpinian Memorial Tri `div#tns1-ow > div#tns1-iw > div#tns1 > div#tns1-item1`
Penguin Pace `div#tns1-ow > div#tns1-iw > div#tns1 > div#tns1-item2`
Thrive Half Marathon and 5K `div#tns1-ow > div#tns1-iw > div#tns1 > div#tns1-item3`
Tsali Ultra `div#tns1-ow > div#tns1-iw > div#tns1 > div#tns1-item4`
Todd Temple Photography `div#tns1-ow > div#tns1-iw > div#tns1 > div#tns1-item5`
Race Awesome Inc. `div#tns1-ow > div#tns1-iw > div#tns1 > div#tns1-item6`
Jamie Geysbeek Photography `div#tns1-ow > div#tns1-iw > div#tns1 > div#tns1-item7`
Always Ready 5K `div#tns1-ow > div#tns1-iw > div#tns1 > div#tns1-item8`
The Des Moines Turkey Trot `div#tns1-ow > div#tns1-iw > div#tns1 > div#tns1-item9`
The Pistol 50K `div#tns1-ow > div#tns1-iw > div#tns1 > div#tns1-item10`
No Business 100 `div#tns1-ow > div#tns1-iw > div#tns1 > div#tns1-item11`
Catholic Health Suffolk County Marathon `div#tns1-ow > div#tns1-iw > div#tns1 > div.banner-slide`
New Orleans Track Club Prior to the release of the upgraded Membership Product… `div#tns2-mw > div#tns2-iw > div#tns2 > div.spotlight`
Flutie 5K for Autism Series The Doug Flutie Jr. Foundation for Autism has been… `div#tns2-mw > div#tns2-iw > div#tns2 > div#tns2-item0`
Miller Park Zoo: Engaging the Community with Races & Events Miller Park Zoo in… `div#tns2-mw > div#tns2-iw > div#tns2 > div#tns2-item1`
Harpoon 5-Miler: Pushing the Envelope with Marketing 365 Days a Year The Harpo… `div#tns2-mw > div#tns2-iw > div#tns2 > div#tns2-item2`
DONNA Marathon The DONNA Foundation honors those facing the challenges of brea… `div#tns2-mw > div#tns2-iw > div#tns2 > div#tns2-item3`
Scout Mountain Ultras Scout Mountain Ultras is an environmental event with a r… `div#tns2-mw > div#tns2-iw > div#tns2 > div#tns2-item4`
Healthy Kids Running Series With five age groups, HKRS brings a five-week runn… `div#tns2-mw > div#tns2-iw > div#tns2 > div#tns2-item5`
Race Day Events Race Day Events switched to RunSignup at the end of 2014, beca… `div#tns2-mw > div#tns2-iw > div#tns2 > div#tns2-item6`
Steelman Racing Today Steelman Racing hosts 5-6 events per year, including a t… `div#tns2-mw > div#tns2-iw > div#tns2 > div#tns2-item7`
Greater Philadelphia YMCA Gobble Wobble It’s no secret that Thanksgiving day i… `div#tns2-mw > div#tns2-iw > div#tns2 > div#tns2-item8`
New Orleans Track Club Prior to the release of the upgraded Membership Product… `div#tns2-mw > div#tns2-iw > div#tns2 > div#tns2-item9`
Flutie 5K for Autism Series The Doug Flutie Jr. Foundation for Autism has been… `div#tns2-mw > div#tns2-iw > div#tns2 > div.spotlight`

Using ARIA attributes in roles where they are prohibited can mean that important information is not communicated to users of assistive technologies. Learn more about prohibited ARIA roles.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Carousel Navigation `div.entry-content > section.banner-container > div#tns1-ow > div.tns-controls`

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.

Contrast

Low-contrast text is difficult or impossible for many users to read. Learn how to provide sufficient color contrast.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Find a Race `div#masthead-inner > div.site-menu-container > div.site-call-to-actions > a.button`
Create a Race `div#masthead-inner > div.site-menu-container > div.site-call-to-actions > a.button`
I Accept `div > div#cookiePolicyPopup > div.drawer__content > button.rsuBtn`

These are opportunities to improve the legibility of your content.

○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>`

●`[aria-*]` attributes have valid values

●`[aria-*]` attributes are valid and not misspelled

●Buttons have an accessible name

●Image elements have `[alt]` attributes

●Input buttons have discernible text.

●`[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

●Document has a `<title>` element

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

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

●Links have a discernible name

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

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

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

●Touch targets have sufficient size and spacing.

●Heading elements appear in a sequentially-descending order

●Document has a main landmark.

●Identical links have the same purpose.

○`[accesskey]` values are unique

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

○Deprecated ARIA roles were not used

○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

○`[role]`s have all required `[aria-*]` attributes

○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

○`[role]` values are valid

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

○Form elements have associated labels

○Links are distinguishable without relying on color.

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

○`<object>` elements have alternate text

○Select elements have associated label elements.

○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

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

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

○All heading elements contain content.

○Uses ARIA roles only on compatible elements

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

○Elements with visible text labels have matching accessible names.

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

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

Best Practices

User Experience

Image natural dimensions should be proportional to the display size and the pixel ratio to maximize image clarity. Learn how to provide responsive images.

Why this matters

Performance issues directly impact user engagement and conversion rates.

	URL	Displayed size	Actual size	Expected size
div > div#cookiePolicyPopup > div.drawer__content > img.margin-r-15 `div > div#cookiePolicyPopup > div.drawer__content > img.margin-r-15`	d368g9lw5ileu7.cloudfront.net/img/frontend2018/cookie-img.bFehfM.png	40 x 40	47 x 47	60 x 60

●Uses HTTPS

●Avoids deprecated APIs

●Avoids third-party cookies

●Allows users to paste into input fields

●Avoids requesting the geolocation permission on page load

●Avoids requesting the notification permission on page load

●Displays images with correct aspect ratio

●Page has the HTML doctype

●Properly defines charset

●No 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 DOM-based XSS with Trusted Types

●Detected JavaScript libraries

●Page has valid source maps

○Redirects HTTP traffic to HTTPS

○Mitigate clickjacking with XFO or CSP

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

Descriptive link text helps search engines understand your content. Learn how to make links more accessible.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Link destination	Link Text
info.runsignup.com/use-cases/more-use-cases/	More
info.runsignup.com/products/registration/	LEARN MORE
info.runsignup.com/products/race-marketing/	LEARN MORE
info.runsignup.com/products/raceday/	LEARN MORE
info.runsignup.com/products/fundraising/	LEARN MORE
info.runsignup.com/products/websites/	LEARN MORE
info.runsignup.com/products/email/	LEARN MORE
info.runsignup.com/products/memberships/	LEARN MORE
info.runsignup.com/ai-and-runsignup/runsignup-ai-chatbot/	Learn More
info.runsignup.com/products/registration/	LEARN MORE
info.runsignup.com/products/race-marketing/	LEARN MORE
info.runsignup.com/products/fundraising/	LEARN MORE
info.runsignup.com/products/raceday/	LEARN MORE
info.runsignup.com/knowledge-base/ai-and-runsignup/	LEARN MORE

Format your HTML in a way that enables crawlers to better understand your app’s content.

○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 are crawlable

●robots.txt is valid

●Image elements have `[alt]` attributes

●Document has a valid `hreflang`

●Document has a valid `rel=canonical`