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.

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

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
cdn.cookielaw.org/scripttemplates/202508.2.0/otBannerSdk.js	86400.0 s	120.9 KiB
/next-integrations/actions/3962/1faa179dfb20d0a3f5a0.js	0.0 ms	9.0 KiB
cdn.cookielaw.org/scripttemplates/202508.2.0/otGPP.js	86400.0 s	22.3 KiB
/cdn-cgi/challenge-platform/h/b/scripts/jsd/0b8fb825cb67/...	14400.0 s	11.3 KiB
cdn.cookielaw.org/logos/static/ot_company_logo.png	86400.0 s	19.1 KiB
/scripttemplates/otSDKStub.js?did=c095b28e-6dfb-40a3-a284...	86400.0 s	9.1 KiB
/next-integrations/actions/amplitude-plugins/f12a4347e108...	0.0 ms	2.9 KiB
cdns3.nerdwallet.com/front-page-astro/icons/ArrowRight.svg	0.0 ms	1.3 KiB
cdns3.nerdwallet.com/front-page-astro/icons/Plus.svg	0.0 ms	1.1 KiB
cdns3.nerdwallet.com/front-page-astro/icons/Minus.svg	0.0 ms	1.0 KiB
cdn.cookielaw.org/logos/static/powered_by_logo.svg	86400.0 s	2.5 KiB
cdn.cookielaw.org/logos/static/ot_close.svg	86400.0 s	495 B
www.clarity.ms/tag/uet/5000528	86400.0 s	219 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
How AI’s Big Appetite for Chips Hits Consumer Wallets `div.news-carousel__card > article.relative > div.absolute > img.h-full`	/tachyon/2026/04/GettyImages-2157490101.jpg?w=350&q=60&we...	23.5 KiB	17.6 KiB
2026 High School Grad Analysis: Over $43K in Loans for a Bachelor’s Degree `div.news-carousel__card > article.relative > div.absolute > img.h-full`	/tachyon/2026/04/GettyImages-2241429134.jpg?w=350&q=60&we...	21.3 KiB	15.3 KiB
How to Live that Debt-Free Life `div.news-carousel__card > article.relative > div.absolute > img.h-full`	/tachyon/2023/04/GettyImages-555716655.jpg?w=350&q=60&web...	17.6 KiB	11.6 KiB
Mortgage Rates Today, Tuesday, April 21: Higher Amid Uncertainty `div.news-carousel__card > article.relative > div.absolute > img.h-full`	/tachyon/2025/08/TUESDAY-MORTGAGE-RATES.jpg?w=350&q=60&we...	8.0 KiB	4.0 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: 765 ms

URL	Time Spent
nerdwallet.com/	765 ms
www.nerdwallet.com/	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

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.nerdwallet.com/	2.1 s	154 ms	6.9 ms
Unattributable	996 ms	98 ms	0.0 ms
/front-page-astro/assets/Layout.astro_astro_type_script_i...	883 ms	770 ms	1.1 ms
www.nerdwallet.com/front-page-astro/assets/client.CbAH-7PF.js	485 ms	393 ms	1.3 ms
cdn.cookielaw.org/scripttemplates/202508.2.0/otBannerSdk.js	306 ms	196 ms	58 ms
www.nerdwallet.com/cdn-cgi/challenge-platform/scripts/jsd/main.js	293 ms	276 ms	3.3 ms
www.googletagmanager.com/gtm.js?id=GTM-NVWSKF5	254 ms	166 ms	83 ms
www.googletagmanager.com/gtag/js?id=AW-11298004898&cx=c&gtm=4e64k0h2	249 ms	150 ms	52 ms
cdn.cookielaw.org/scripttemplates/202508.2.0/otGPP.js	237 ms	214 ms	18 ms
www.nerdwallet.com/front-page-astro/assets/GTMDataLayer.C7c1FmBe.js	206 ms	199 ms	1.2 ms
www.googletagmanager.com/gtag/js?id=GT-WPF683LK&cx=c&gtm=4e64k0h2	201 ms	149 ms	51 ms
www.googletagmanager.com/gtag/js?id=AW-17592114049&cx=c&gtm=4e64k0h2	185 ms	133 ms	50 ms
www.googletagmanager.com/gtag/js?id=AW-979644386&cx=c&gtm=4e64k0h2	183 ms	130 ms	52 ms
www.nerdwallet.com/front-page-astro/assets/index.BhzR2oEV.js	181 ms	167 ms	0.8 ms
/next-integrations/actions/3962/1faa179dfb20d0a3f5a0.js	153 ms	147 ms	3.8 ms
/scripttemplates/otSDKStub.js?did=c095b28e-6dfb-40a3-a284...	68 ms	62 ms	3.3 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	3.7 s
Other	2.0 s
Style & Layout	641 ms
Script Parsing & Compilation	410 ms
Rendering	331 ms
Parse HTML & CSS	159 ms
Garbage Collection	81 ms

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: 0.0 ms 19.0 KiB

URL	Transfer Size	Est Savings
	21.8 KiB	19.0 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: 0.0 ms 609.4 KiB

URL	Transfer Size	Est Savings
www.nerdwallet.com/front-page-astro/assets/index.BUzZ63G0.js	136.8 KiB	110.8 KiB
www.googletagmanager.com/gtag/js?id=AW-11298004898&cx=c&gtm=4e64k0h2	144.4 KiB	84.8 KiB
www.googletagmanager.com/gtag/js?id=AW-979644386&cx=c&gtm=4e64k0h2	144.4 KiB	84.6 KiB
www.googletagmanager.com/gtag/js?id=AW-17592114049&cx=c&gtm=4e64k0h2	144.3 KiB	84.5 KiB
www.googletagmanager.com/gtag/js?id=GT-WPF683LK&cx=c&gtm=4e64k0h2	146.7 KiB	84.0 KiB
www.googletagmanager.com/gtm.js?id=GTM-NVWSKF5	190.4 KiB	76.3 KiB
cdn.cookielaw.org/scripttemplates/202508.2.0/otBannerSdk.js	120.7 KiB	61.7 KiB
www.nerdwallet.com/front-page-astro/assets/client.CbAH-7PF.js	57.7 KiB	22.7 KiB

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

●LCP request discovery

●Modern HTTP

●Render blocking requests

●Optimize viewport for mobile

●Minify CSS

●Minify JavaScript

●Avoids enormous network payloads Total size was 1,743 KiB

●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 30 ms

●Server Backend Latencies 80 ms

●Tasks

●Diagnostics

●Metrics

●Screenshot Thumbnails

●Final Screenshot

●Script Treemap Data

●Resources Summary

●Initial server response time was short Root document took 120 ms

●Avoid large layout shifts 6 layout shifts found

○INP breakdown

○User Timing marks and measures

○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.

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
Compare Now `div.flex > div.h-full > a.group > span.text-green`
6.98% `a.group > div.flex > div.flex > span.hp-fade-element`
6.07% `a.group > div.flex > div.flex > span.hp-fade-element`
5.55% `a.group > div.flex > div.flex > span.hp-fade-element`

Low-contrast text is difficult or impossible for many users to read. Link text that is discernible improves the experience for users with low vision. Learn how to make links distinguishable.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Privacy policy `div#onetrust-group-container > div#onetrust-policy > div#onetrust-policy-text > a.ot-cookie-policy-link`

These are opportunities to improve the legibility of your content.

Names and labels

Labels ensure that form controls are announced properly by assistive technologies, like screen readers. Learn more about form element labels.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div.group/container > div.p-3 > div.relative > input#nerd-ai-mini-prompt-bar-input `div.group/container > div.p-3 > div.relative > input#nerd-ai-mini-prompt-bar-input`

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.

Best practices

Touch targets with sufficient size and spacing help users who may have difficulty targeting small controls to activate the targets. Learn more about touch targets.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
NerdWallet Home Page `div.compass-v3 > header#global-nav > div.flex-grow > a#global-nav-logo-link`

These items highlight common accessibility best practices.

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
Compare Now Refinance Best rate on NerdWallet (30-Year Fixed) 5.91% Average rat… `div.-mx-4 > div.flex > div.h-full > a.group`
30-Year Fixed Best rate on NerdWallet 5.72% Average rate 6.07% `div.-mx-4 > div.flex > div.h-full > a.group`
15-Year Fixed Best rate on NerdWallet 4.76% Average rate 5.55% `div.-mx-4 > div.flex > div.h-full > a.group`
Privacy policy `div#onetrust-group-container > div#onetrust-policy > div#onetrust-policy-text > a.ot-cookie-policy-link`

○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

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

●`[aria-hidden="true"]` elements do not contain focusable descendents

●Elements use only permitted ARIA attributes

●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

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

●Heading elements appear in a sequentially-descending order

●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

○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

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

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

○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.

○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
SharedStorage	www.nerdwallet.com/cdn-cgi/challenge-platform/scripts/jsd/main.js
StorageType.persistent is deprecated. Please use standardized navigator.storage instead.	www.nerdwallet.com/cdn-cgi/challenge-platform/scripts/jsd/main.js
Fledge	www.nerdwallet.com/cdn-cgi/challenge-platform/scripts/jsd/main.js

●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

●Page has valid source maps

○Redirects HTTP traffic to HTTPS

○Detected JavaScript libraries

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`