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.

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.

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.news__grid > div.news__card > div.news__image > img `div.news__grid > div.news__card > div.news__image > img`	newsroom.csun.edu/wp-content/uploads/2025/07/istock-952491486-1024x1024.jpg	245.0 KiB	225.3 KiB
three CSUN students talking in an outdoor space on campus `div.story-cta > div.story-cta__container > div.story-cta__image1 > img`	/sites/default/files/2022-06/HomepageStudentLife_1_900x90...	114.6 KiB	107.0 KiB
two CSUN students talking outside on campus `div.story-cta > div.story-cta__bottom > div.story-cta__media > img.story-cta__image3`	/sites/default/files/2022-06/HomepageStudentLife_3_900x60...	85.8 KiB	78.0 KiB
a CSUN student leading a campus tour `div.photos-cta > div.photos-cta__container > div.photos-cta__image > img`	/sites/default/files/2022-06/HomepageCampus_1_900x600.jpg	93.7 KiB	78.0 KiB
two CSUN students walking outside on campus `div.photos-cta > div.photos-cta__container > div.photos-cta__content > img.photos-cta__image`	/sites/default/files/2022-06/HomepageCampus_3_900x900.jpg	70.4 KiB	64.8 KiB
A white container on four wheels with IBM SkillsBuild written on the side. `div.news__grid > div.news__card > div.news__image > img`	newsroom.csun.edu/wp-content/uploads/2026/04/robot-980x613.jpg	61.0 KiB	50.7 KiB
Make It Official! New Matadors: Visit Admitted Students to declare your Intent… `body > div.dialog-off-canvas-main-canvas > div.content__top > div.hero`	/sites/default/files/styles/hero/public/2026-03/Spring Th...	258.0 KiB	49.7 KiB
two CSUN students sitting outside having a conversation `div.story-cta > div.story-cta__bottom > div.story-cta__media > img.story-cta__image4`	/sites/default/files/2022-06/HomepageStudentLife_4_900x60...	51.1 KiB	40.6 KiB
a CSUN professor leading students on a small group discussion `div.finder-cta > div.finder-cta__container > div.finder-cta__image1 > img`	/sites/default/files/2022-06/HomepageProgramFinder_1_900x...	48.5 KiB	40.5 KiB
a CSUN professor working with students in a chemistry lab `div.finder-cta > div.finder-cta__bottom > div.finder-cta__image4 > img`	/sites/default/files/2022-06/HomepageProgramFinder_4_900x...	42.8 KiB	40.5 KiB
a CSUN student walking through the lobby of a building on campus `div.photos-cta-load > div.photos-cta > div.photos-cta__container > img.photos-cta__image`	/sites/default/files/2022-06/HomepageCampus_2_600x900.jpg	43.9 KiB	39.9 KiB
Alexander Chanko `div.flickity-slider > div.widget > div.media__cover > img`	/sites/default/files/2026-04/Alexander-Chanko.feature.jpg	57.9 KiB	35.0 KiB
a CSUN professor speaking to students `div.finder-cta > div.finder-cta__bottom > div.finder-cta__image2 > img`	/sites/default/files/2022-06/HomepageProgramFinder_2_600x...	34.8 KiB	32.8 KiB
two CSUN students sitting at a table outside `div.panel > div.story-cta > div.story-cta__bottom > img.story-cta__image2`	/sites/default/files/2022-06/HomepageStudentLife_2_900x60...	39.2 KiB	32.3 KiB
a CSUN student sitting at the console in a recording booth `div.finder-cta > div.finder-cta__bottom > div.finder-cta__image3 > img`	/sites/default/files/2022-06/HomepageProgramFinder_3_900x...	23.8 KiB	22.0 KiB
Malachia Y. Hoover ’17, M.S. Biology `div.flickity-slider > blockquote.quote > div.quote__side > img`	/sites/default/files/styles/large/public/2023-05/URA_Mala...	16.3 KiB	7.7 KiB
Samantha and Mark Sirota `div.flickity-slider > blockquote.quote > div.quote__side > img`	/sites/default/files/styles/large/public/2026-03/GBO.edit...	30.4 KiB	5.8 KiB
Jonathan Gonzalez and Camilla Rambaldi `div.flickity-slider > blockquote.quote > div.quote__side > img`	/sites/default/files/styles/large/public/2026-01/image007...	20.1 KiB	4.3 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-6-DIV

nodeLabel: Make It Official! New Matadors: Visit Admitted Students to declare your Intent…

path: 1,HTML,1,BODY,3,DIV,2,DIV,0,DIV

selector: body > div.dialog-off-canvas-main-canvas > div.content__top > div.hero

snippet: <div class="hero hero--home" style="background-image: url("//live-csu-northridge.pantheonsite.io/sites/default…");">

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

value: No additional origins are good candidates for preconnecting

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
/sites/default/files/css/css_PTfvF6jB_LQandoXrLiPW1Wszb6T...	40.2 KiB	758 ms
/css2?family=Montserrat:wght@300;400;500;600;700&family=R...	1.3 KiB	782 ms
/sites/default/files/css/css_I2pWMaC5yghBGRrsKUqaasXPhUho...	2.7 KiB	794 ms

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/1286294849864359?v=2.9.303&r=stable&domai...	1200.0 s	44.8 KiB
www.google-analytics.com/analytics.js	7200.0 s	20.9 KiB
/signals/config/5767631016632101?v=2.9.303&r=stable&domai...	1200.0 s	16.3 KiB
scripts.clarity.ms/0.8.59/clarity.js	86400.0 s	26.2 KiB
tags.srv.stackadapt.com/events.js	5.0 s	7.7 KiB
learn.csun-info.org/mtc.js	60.0 s	4.2 KiB
script.crazyegg.com/pages/scripts/0013/2432.js	300.0 s	2.7 KiB
/rt?sid=2rOjQgM7C5okmELM6S2fLC&url=https%3A%2F%2Fwww.csun...	0.0 ms	946 B
/tr/?id=1286294849864359&ev=PageView&dl=https%3A%2F%2Fwww...	0.0 ms	19 B
/tr/?id=5767631016632101&ev=PageView&dl=https%3A%2F%2Fwww...	0.0 ms	16 B
/tr/?id=5767631016632101&ev=Digital%20Boost%20-%20FM%20-%...	0.0 ms	16 B

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: 978 ms

URL	Time Spent
csun.edu/	978 ms
www.csun.edu/	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.

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: 150 ms 31.6 KiB

URL	Transfer Size	Est Savings
/sites/default/files/css/css_PTfvF6jB_LQandoXrLiPW1Wszb6T...	39.8 KiB	31.6 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 397.5 KiB

URL	Transfer Size	Est Savings
www.googletagmanager.com/gtag/js?id=G-3YYLW7L02H&cx=c&gtm=4e64k0	175.7 KiB	69.9 KiB
www.googletagmanager.com/gtag/js?id=G-TFRB7MZQ96&cx=c&gtm=4e64k0	150.5 KiB	65.4 KiB
www.googletagmanager.com/gtm.js?id=GTM-KH4GKFR	130.9 KiB	64.3 KiB
www.googletagmanager.com/gtm.js?id=GTM-5J76ZZX	139.7 KiB	62.3 KiB
live-csu-northridge.pantheonsite.io/themes/csun/dist/js/main.js?v=1.1	91.2 KiB	50.5 KiB
connect.facebook.net/en_US/fbevents.js	96.5 KiB	32.5 KiB
/pages/versioned/common-scripts/4ce8c7df8d425cc5046457682...	55.1 KiB	27.9 KiB
/core/assets/vendor/jquery/jquery.min.js?v=3.6.3	35.4 KiB	24.6 KiB

Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this. Learn how to 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.csun.edu/	1.3 s	208 ms	24 ms
Unattributable	909 ms	35 ms	0.0 ms
live-csu-northridge.pantheonsite.io/themes/csun/dist/js/main.js?v=1.1	768 ms	379 ms	33 ms
/pages/versioned/common-scripts/4ce8c7df8d425cc5046457682...	380 ms	336 ms	20 ms
www.googletagmanager.com/gtm.js?id=GTM-5J76ZZX	378 ms	313 ms	54 ms
www.googletagmanager.com/gtag/js?id=G-3YYLW7L02H&cx=c&gtm=4e64k0	376 ms	304 ms	67 ms
learn.csun-info.org/mtc.js	289 ms	195 ms	1.8 ms
www.googletagmanager.com/gtag/js?id=G-TFRB7MZQ96&cx=c&gtm=4e64k0	273 ms	215 ms	54 ms
scripts.clarity.ms/0.8.59/clarity.js	258 ms	221 ms	9.9 ms
www.googletagmanager.com/gtm.js?id=GTM-KH4GKFR	220 ms	168 ms	50 ms
js-agent.newrelic.com/nr-spa-1.313.1.min.js	202 ms	149 ms	22 ms
www.google-analytics.com/analytics.js	199 ms	157 ms	34 ms
connect.facebook.net/en_US/fbevents.js	159 ms	115 ms	43 ms
/signals/config/1286294849864359?v=2.9.303&r=stable&domai...	153 ms	120 ms	31 ms
/signals/config/5767631016632101?v=2.9.303&r=stable&domai...	91 ms	74 ms	12 ms
script.crazyegg.com/pages/scripts/0013/2432.js	59 ms	52 ms	1.2 ms
/core/assets/vendor/jquery/jquery.min.js?v=3.6.3	52 ms	38 ms	10 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	3.3 s
Other	1.4 s
Style & Layout	800 ms
Script Parsing & Compilation	485 ms
Garbage Collection	139 ms
Rendering	103 ms
Parse HTML & CSS	89 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
/sites/default/files/2026-03/CSUN Homepage Banner Spring ...	3.5 MiB
/sites/default/files/2022-06/HomepageFooter_1_1600x800-mi...	325.7 KiB
/sites/default/files/2022-06/AboutFullWidthHero_1_1600x80...	267.3 KiB
/sites/default/files/styles/hero/public/2026-03/Spring Th...	258.9 KiB
newsroom.csun.edu/wp-content/uploads/2025/07/istock-952491486-1024x1024.jpg	245.6 KiB
www.googletagmanager.com/gtag/js?id=G-3YYLW7L02H&cx=c&gtm=4e64k0	175.8 KiB
www.googletagmanager.com/gtag/js?id=G-TFRB7MZQ96&cx=c&gtm=4e64k0	150.5 KiB
www.googletagmanager.com/gtm.js?id=GTM-5J76ZZX	139.8 KiB
www.googletagmanager.com/gtm.js?id=GTM-KH4GKFR	131.2 KiB
/wp-content/uploads/2026/04/armenian-genocide-remembrance...	129.7 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
a CSUN student leading a campus tour `div.photos-cta > div.photos-cta__container > div.photos-cta__image > img`	/sites/default/files/2022-06/HomepageCampus_1_900x600.jpg
a CSUN student walking through the lobby of a building on campus `div.photos-cta-load > div.photos-cta > div.photos-cta__container > img.photos-cta__image`	/sites/default/files/2022-06/HomepageCampus_2_600x900.jpg
two CSUN students sitting outside having a conversation `div.story-cta > div.story-cta__bottom > div.story-cta__media > img.story-cta__image4`	/sites/default/files/2022-06/HomepageStudentLife_4_900x60...
two CSUN students sitting at a table outside `div.panel > div.story-cta > div.story-cta__bottom > img.story-cta__image2`	/sites/default/files/2022-06/HomepageStudentLife_2_900x60...

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

●Layout shift culprits

●Optimize DOM size

●Font display

●Forced reflow

●LCP breakdown

●Modern HTTP

●Optimize viewport for mobile

●Minify CSS

●Minify JavaScript

●User Timing marks and measures 12 user timings

●Avoid long main-thread tasks 20 long tasks found

●Avoid non-composited animations 5 animated elements found

●Page didn't prevent back/forward cache restoration

●Network Requests

●Network Round Trip Times 70 ms

●Server Backend Latencies 130 ms

●Tasks

●Diagnostics

●Metrics

●Screenshot Thumbnails

●Final Screenshot

●Script Treemap Data

●Resources Summary

●Initial server response time was short Root document took 80 ms

●Avoid large layout shifts 1 layout shift found

○INP breakdown

100

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.

Visible text labels that do not match the accessible name can result in a confusing experience for screen reader users. Learn more about accessible names.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Title IX `div.footer__container > ul.footer__links > li > a`

○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

●Form elements have associated labels

●`[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 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

●Skip links are focusable.

●Document has a main landmark.

●Deprecated ARIA roles were not used

●Identical links have the same purpose.

○`[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

○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.

○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.

○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 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

100

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.

○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

●Links are crawlable

●robots.txt is valid

●Image elements have `[alt]` attributes

●Document has a valid `hreflang`

●Document has a valid `rel=canonical`