Skip to content
https://usu.edu

Lighthouse Mobile

· 0 checks — Mobile Lighthouse audit -- Performance, Accessibility, Best Practices, and SEO category breakdown.
SCORE
0
GRADE
FIX
0
REVIEW
0
PASS
0
INFO
0

Detailed Report

Audit breakdown by category with detailed findings.

47

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.

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.

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:node label:Element subItemsHeading:map[key:extra] valueType:node] map[granularity:0.001 key:score label:Layout shift score subItemsHeading:map[key:cause valueType:text] valueType:numeric]]
items: [map[node:map[type:text value:Total] score:0.204839] map[node:map[boundingRect:map[bottom:1373 height:1141 left:0 right:412 top:232 width:412] lhId:page-3-SECTION nodeLabel:Academics At Utah State, you'll find award-winning faculty, state-of-the-art f… path:1,HTML,1,BODY,8,MAIN,1,SECTION selector:body > main#content > section snippet:<section> type:node] score:0.155946] map[node:map[boundingRect:map[bottom:878 height:186 left:15 right:397 top:692 width:382] lhId:page-7-DIV nodeLabel:STUDENT/FACULTY RATIO 19 to 1 path:1,HTML,1,BODY,8,MAIN,1,SECTION,0,DIV,0,DIV,0,DIV,2,DIV,1,DIV selector:div.row > div.col-12 > div.row > div.col-md-6 snippet:<div class="col-md-6 col-lg-3 col-xl-3 data-col data-col-2"> type:node] score:0.048408] map[node:map[boundingRect:map[bottom:858 height:55 left:143 right:249 top:803 width:105] lhId:page-5-P nodeLabel:19 to 1 path:1,HTML,1,BODY,8,MAIN,1,SECTION,0,DIV,0,DIV,0,DIV,2,DIV,1,DIV,1,P selector:div.col-12 > div.row > div.col-md-6 > p.data-val snippet:<p class="data-val"> type:node] score:0.000307] map[node:map[boundingRect:map[bottom:672 height:55 left:168 right:224 top:617 width:57] lhId:page-6-P nodeLabel:#18 path:1,HTML,1,BODY,8,MAIN,1,SECTION,0,DIV,0,DIV,0,DIV,2,DIV,0,DIV,1,P selector:div.col-12 > div.row > div.col-md-6 > p.data-val snippet:<p class="data-val"> type:node] score:0.000106] map[node:map[boundingRect:map[bottom:858 height:55 left:143 right:249 top:803 width:105] lhId:page-5-P nodeLabel:19 to 1 path:1,HTML,1,BODY,8,MAIN,1,SECTION,0,DIV,0,DIV,0,DIV,2,DIV,1,DIV,1,P selector:div.col-12 > div.row > div.col-md-6 > p.data-val snippet:<p class="data-val"> type:node] score:7.2e-05]]

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.

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:21.651 source:map[column:54632 line:1 type:source-location url: 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:58.572 source:map[type:text value:[unattributed]]] map[reflowTime:6.749 source:map[column:87016 line:1 type:source-location url:https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js urlProvider:network]] map[reflowTime:1.023 source:map[column:52520 line:1 type:source-location url:https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js urlProvider:network]] map[reflowTime:0.645 source:map[column:52578 line:1 type:source-location url:https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js urlProvider:network]] map[reflowTime:0.471 source:map[column:52642 line:1 type:source-location url:https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js urlProvider:network]] map[reflowTime:1.21 source:map[column:27 line:634 type:source-location url:https://www.usu.edu/assets/bs4/js/init.1.2.js urlProvider:network]] map[reflowTime:21.651 source:map[column:38603 line:0 type:source-location url: 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.

URLResource SizeEst Savings
section > div.container-fluid > div.row > div.col-lg-3 section > div.container-fluid > div.row > div.col-lg-3
www.usu.edu/modules/images/grid/usu-students.jpg161.8 KiB53.2 KiB
Register now for best class selection section > div.hero-banner > picture > img.img-fluid
www.usu.edu/modules/images/banners/414/fall-class-registration.jpg48.8 KiB38.4 KiB
View of Logan campus at sunset main#content > div.hero-banner > picture > img.img-fluid
www.usu.edu/about/images/logan-campus-view-414.jpg35.7 KiB26.9 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-1-IMG
nodeLabel: Register now for best class selection
path: 1,HTML,1,BODY,8,MAIN,0,SECTION,0,DIV,1,PICTURE,7,IMG
selector: section > div.hero-banner > picture > img.img-fluid
snippet: <img class="img-fluid" src="https://www.usu.edu/modules/images/banners/414/fall-class-registration.jpg" alt="Register now for best class selection" width="360" height="135">

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
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.

URLTransfer SizeDuration
www.usu.edu/assets/bs4/css/main.css14.5 KiB151 ms
www.usu.edu/assets/bs4/css/bootstrap.min.css22.6 KiB151 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.

RequestCache TTLTransfer Size
/beacon/i55653z555563fr3j3o3e3d3n8091566431/engage/script...120.0 s42.0 KiB
kit.fontawesome.com/f0188d4897.js60.0 s5.7 KiB
/st?ga_tracking_id=G-YP02VK67GD&ga_client_id=1623393475.1...0.0 ms1.4 KiB
/st?ga_tracking_id=G-YP02VK67GD&ga_client_id=1623393475.1...0.0 ms590 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: 1.2 s
URLTime Spent
usu.edu/1.2 s
www.usu.edu/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

Why this matters

Performance issues directly impact user engagement and conversion rates.

ElementLayout shift score
Academics At Utah State, you'll find award-winning faculty, state-of-the-art f… body > main#content > section
0.156
STUDENT/FACULTY RATIO 19 to 1 div.row > div.col-12 > div.row > div.col-md-6
0.048
19 to 1 div.col-12 > div.row > div.col-md-6 > p.data-val
0.000
#18 div.col-12 > div.row > div.col-md-6 > p.data-val
0.000
19 to 1 div.col-12 > div.row > div.col-md-6 > p.data-val
0.000

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.

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

Diagnostics

Minifying JavaScript files can reduce payload sizes and script parse time. Learn how to minify JavaScript.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 90 ms 6.2 KiB
URLTransfer SizeEst Savings
www.usu.edu/assets/bs4/js/init.1.2.js16.2 KiB6.2 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.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 250 ms 32.1 KiB
URLTransfer SizeEst Savings
www.usu.edu/assets/bs4/css/bootstrap.min.css22.3 KiB20.7 KiB
www.usu.edu/assets/bs4/css/main.css14.2 KiB11.4 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.

URLTotal CPU TimeScript EvaluationScript Parse
www.usu.edu/1.4 s80 ms2.1 ms
www.usu.edu/assets/bs4/lib/lazysizes/lazysizes.min.js1.2 s1.1 s2.1 ms
ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js948 ms565 ms21 ms
Unattributable739 ms37 ms0.0 ms
www.googletagmanager.com/gtag/js?id=G-YP02VK67GD&cx=c&gtm=4e64h1670 ms558 ms91 ms
www.googletagmanager.com/gtm.js?id=GTM-WPLCQ7L389 ms311 ms73 ms
kit.fontawesome.com/f0188d4897.js384 ms220 ms48 ms
/spx?dxver=4.0.0&shaid=47236&tdr=&plh=https%3A%2F%2Fwww.u...69 ms56 ms5.0 ms
/beacon/i55653z555563fr3j3o3e3d3n8091566431/engage/script...66 ms40 ms25 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.

CategoryTime Spent
Script Evaluation3.1 s
Other1.1 s
Style & Layout1.0 s
Rendering395 ms
Script Parsing & Compilation310 ms
Garbage Collection89 ms
Parse HTML & CSS77 ms

Minifying CSS files can reduce network payload sizes. Learn how to minify CSS.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 0.0 ms 3.3 KiB
URLTransfer SizeEst Savings
www.usu.edu/assets/bs4/css/main.css14.5 KiB3.3 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.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 0.0 ms 170.6 KiB
URLTransfer SizeEst Savings
www.googletagmanager.com/gtm.js?id=GTM-WPLCQ7L156.0 KiB77.8 KiB
www.googletagmanager.com/gtag/js?id=G-YP02VK67GD&cx=c&gtm=4e64h1177.6 KiB60.6 KiB
/beacon/i55653z555563fr3j3o3e3d3n8091566431/engage/script...41.4 KiB32.2 KiB

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.

URLTransfer Size
www.usu.edu/impact/assets/header.m4v4.5 MiB
www.googletagmanager.com/gtag/js?id=G-YP02VK67GD&cx=c&gtm=4e64h1177.6 KiB
www.usu.edu/modules/images/grid/usu-students.jpg162.3 KiB
www.googletagmanager.com/gtm.js?id=GTM-WPLCQ7L156.3 KiB
www.usu.edu/modules/images/banners/414/fall-class-registration.jpg49.2 KiB
/s/robotocondensed/v31/ieVl2ZhZI2eCN5jzbjEETS9weq8-19K7DQ...45.0 KiB
/beacon/i55653z555563fr3j3o3e3d3n8091566431/engage/script...42.0 KiB
www.usu.edu/about/images/logan-campus-view-414.jpg36.0 KiB
ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js30.9 KiB
www.usu.edu/impact/assets/header.m4v30.6 KiB

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

●Optimize DOM size
●Font display
●LCP breakdown
●Modern HTTP
●Optimize viewport for mobile
●User Timing marks and measures 5 user timings
●Avoid long main-thread tasks 20 long tasks found
●Image elements have explicit `width` and `height`
●Page didn't prevent back/forward cache restoration
●Network Requests
●Network Round Trip Times 150 ms
●Server Backend Latencies 460 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Initial server response time was short Root document took 170 ms
○INP breakdown
○Avoid non-composited animations
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.

○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"]`
●Uses ARIA roles only on compatible elements
●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
○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.
○No element has a `[tabindex]` value greater than 0
○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>`.
○All heading elements contain content.
○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.
96

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.

URLDisplayed sizeActual sizeExpected size
Register now for best class selection section > div.hero-banner > picture > img.img-fluid
www.usu.edu/modules/images/banners/414/fall-class-registration.jpg412 x 154414 x 155618 x 231
●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 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
92

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

If your robots.txt file is malformed, crawlers may not be able to understand how you want your website to be crawled or indexed. Learn more about robots.txt.

Why this matters

Performance issues directly impact user engagement and conversion rates.

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
●Links are crawlable
●Image elements have `[alt]` attributes
●Document has a valid `hreflang`
○Document has a valid `rel=canonical`

Send Feedback