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 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
web-sdk.aptrinsic.com/api/aptrinsic.js?a=AP-P3BAFCCG7NYO-2	3600.0 s	230.3 KiB
maven.org/assets/images/center-image.jpeg?v=1	0.0 ms	157.8 KiB
www.google-analytics.com/analytics.js	7200.0 s	20.9 KiB
cdn.bizible.com/scripts/bizible.js	86400.0 s	25.2 KiB
static.zdassets.com/ekr/snippet.js?key=67cfc48f-e344-43ae-9fe7-46f37b7eaef6	3600.0 s	4.6 KiB
maven.org/assets/images/logo.svg?v=1	0.0 ms	1.9 KiB
maven.org/assets/images/github-menu-item.svg?v=1	0.0 ms	1.2 KiB

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:0.489437] map[node:map[boundingRect:map[bottom:1531 height:627 left:0 right:412 top:904 width:412] lhId:page-3-DIV nodeLabel:Stop Reworking AI Code. Start Shipping It. Sonatype Guide gives AI coding assi… path:1,HTML,1,BODY,2,DIV,1,DIV,0,DIV,2,DIV selector:div.nx-page > div.nx-page-content > div.IndexPage-module-scss-module__m3x4hG__heroAndMain > div.GuideAd-module-scss-module__Kh82Wq__productWrapper snippet:<div class="GuideAd-module-scss-module__Kh82Wq__productWrapper"> type:node] score:0.449888] map[node:map[boundingRect:map[bottom:4452 height:4316 left:0 right:412 top:136 width:412] lhId:page-2-DIV nodeLabel:Find OSS Components As stewards of Central for nearly 20 years and inventors o… path:1,HTML,1,BODY,2,DIV,1,DIV selector:body.nx-body > div.nx-page > div.nx-page-content snippet:<div class="nx-page-content IndexPage-module-scss-module__m3x4hG__content"> type:node] score:0.039549]]

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
central.sonatype.com/_next/static/media/open-sans-v18-latin-600.e16cc113.woff	395 ms
central.sonatype.com/_next/static/media/open-sans-v18-latin-700.ecc3257d.woff	395 ms
/_next/static/media/open-sans-v18-latin-regular.d772c311....	395 ms
/_next/static/media/open-sans-v18-latin-600italic.93da11f...	395 ms
central.sonatype.com/_next/static/media/open-sans-v18-latin-italic.09280839.woff	175 ms
fonts.gstatic.com/s/materialicons/v145/flUhRq6tzZclQEJ-Vdg-IuiaDsNcIhQ8tQ.woff2	80 ms

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
State Of The Software Supply Chain Report `div.SccrAd-module-scss-module__cu9oPa__productContainer > div.SccrAd-module-scss-module__cu9oPa__container > div.SccrAd-module-scss-module__cu9oPa__image > img`	central.sonatype.com/_next/static/media/SSCR26-book-mock.a6bdab2e.png	444.7 KiB	411.8 KiB
Help `div.Footer-module-scss-module__yFPs5G__footerInner > div > ul > li.Footer-module-scss-module__yFPs5G__footerListItem`	maven.org/assets/images/center-image.jpeg?v=1	157.1 KiB	34.7 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.

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
central.sonatype.com/_next/static/chunks/813162c4632647fb.css	4.6 KiB
central.sonatype.com/_next/static/chunks/32204ee6079875e1.css	18.0 KiB	322 ms
central.sonatype.com/_next/static/chunks/f7e2cfca66b95516.css	2.5 KiB
central.sonatype.com/_next/static/chunks/c8d4bc0d7f9a9824.css	4.7 KiB
central.sonatype.com/_next/static/chunks/186bad8c212236ce.css	3.1 KiB
central.sonatype.com/_next/static/chunks/9081046f14a49fdb.css	2.6 KiB	322 ms
central.sonatype.com/_next/static/chunks/1deb7c57d32b741b.css	527 B
central.sonatype.com/_next/static/chunks/ced9f21470ab95fb.css	541 B
central.sonatype.com/_next/static/chunks/51ef267aa05bd38f.css	490 B
central.sonatype.com/_next/static/chunks/a5748c610fec802f.css	806 B
central.sonatype.com/_next/static/chunks/8c0406260fdbe388.css	1.6 KiB
central.sonatype.com/_next/static/chunks/7dc6542cb616f016.css	881 B
central.sonatype.com/_next/static/chunks/7e3e88e29a20ba42.css	2.3 KiB
central.sonatype.com/_next/static/chunks/4eb596bd6324dd5e.css	424 B

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

Lists the toplevel main thread tasks that executed during page load.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Collection of useful page vitals.

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

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: 6.3 s

URL	Time Spent
maven.org/	6.3 s
central.sonatype.com/?smo=true	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.

Element	Layout shift score
Stop Reworking AI Code. Start Shipping It. Sonatype Guide gives AI coding assi… `div.nx-page > div.nx-page-content > div.IndexPage-module-scss-module__m3x4hG__heroAndMain > div.GuideAd-module-scss-module__Kh82Wq__productWrapper`	0.450
Find OSS Components As stewards of Central for nearly 20 years and inventors o… `body.nx-body > div.nx-page > div.nx-page-content`	0.040

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.

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.

Lists the longest tasks on the main thread, useful for identifying worst contributors to input delay. Learn how to avoid long main-thread tasks

Why this matters

Performance issues directly impact user engagement and conversion rates.

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: 320 ms 13.2 KiB

URL	Transfer Size	Est Savings
central.sonatype.com/_next/static/chunks/32204ee6079875e1.css	17.8 KiB	13.2 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: 3.0 s 1.7 MiB

URL	Transfer Size	Est Savings
central.sonatype.com/_next/static/chunks/8a1b799380a42a65.js	419.1 KiB	419.1 KiB
central.sonatype.com/_next/static/chunks/d5a7727462d482f9.js	324.5 KiB	324.0 KiB
/xdc.js?_biz_u=ea86f2369a96465df28094d0811ecef4&_biz_h=35...	541.5 KiB	296.3 KiB
www.googletagmanager.com/gtm.js?id=GTM-PDC9ZLZ	397.8 KiB	271.3 KiB
static.zdassets.com/web_widget/classic/latest/web-widget-main-22a6ed7.js	260.4 KiB	112.9 KiB
www.googletagmanager.com/gtag/js?id=G-JP8E7HP4Q6&cx=c&gtm=4e64k0	153.3 KiB	107.5 KiB
central.sonatype.com/_next/static/chunks/a56342ba7750290f.js	77.3 KiB	77.1 KiB
www.googletagmanager.com/gtag/destination?id=G-JP8E7HP4Q6&cx=c&gtm=4e64k0	153.3 KiB	63.6 KiB
/gtm.js?id=GTM-PMGC3JR6&gtm_auth=&gtm_preview=&gtm_cookie...	149.4 KiB	61.3 KiB
www.googletagmanager.com/gtag/js?id=G-HF5FHKM25P&cx=c&gtm=4e64k0	50.7 KiB	24.8 KiB
central.sonatype.com/_next/static/chunks/c1e46bf1da7ac198.js	68.3 KiB	22.4 KiB

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

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
central.sonatype.com/_next/static/media/SSCR26-book-mock.a6bdab2e.png	445.3 KiB
central.sonatype.com/_next/static/chunks/8a1b799380a42a65.js	419.8 KiB
central.sonatype.com/_next/static/chunks/e74bc7b807f472d5.js	324.8 KiB
central.sonatype.com/_next/static/chunks/d5a7727462d482f9.js	324.7 KiB
static.zdassets.com/web_widget/classic/latest/web-widget-main-22a6ed7.js	261.0 KiB
maven.org/main-es2015.76540079f641857f2387.js	230.5 KiB
web-sdk.aptrinsic.com/api/aptrinsic.js?a=AP-P3BAFCCG7NYO-2	230.3 KiB
maven.org/assets/images/center-image.jpeg?v=1	157.8 KiB
www.googletagmanager.com/gtag/destination?id=G-JP8E7HP4Q6&cx=c&gtm=4e64k0	153.6 KiB
www.googletagmanager.com/gtag/js?id=G-JP8E7HP4Q6&cx=c&gtm=4e64k0	153.3 KiB

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

●Document request latency

●Optimize DOM size

●Forced reflow

●LCP breakdown

●Modern HTTP

●Optimize viewport for mobile

●Minify CSS

●Minify JavaScript

●User Timing marks and measures 42 user timings

●Avoid non-composited animations 2 animated elements found

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

●Network Requests

●Network Round Trip Times 170 ms

●Server Backend Latencies 200 ms

●Metrics

●Screenshot Thumbnails

●Final Screenshot

●Script Treemap Data

●Resources Summary

●Initial server response time was short Root document took 220 ms

○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.

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
Visit HeroDevs `div.HeroDevsIndexAd-module-scss-module__uBZRbG__card > div.HeroDevsIndexAd-module-scss-module__uBZRbG__buttonWrapper > a.nx-text-link > span`

These are opportunities to improve the legibility of your content.

Navigation

Properly ordered headings that do not skip levels convey the semantic structure of the page, making it easier to navigate and understand when using assistive technologies. Learn more about heading order.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Partner-Backed Support for OSS Component Security NEW `div.HeroDevsIndexAd-module-scss-module__uBZRbG__container > div.HeroDevsIndexAd-module-scss-module__uBZRbG__textContainer > div.HeroDevsIndexAd-module-scss-module__uBZRbG__text > h3.nx-h3`

These are opportunities to improve keyboard navigation in your application.

○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

●`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.

●Definition list items are wrapped in `<dl>` elements

●Document has a `<title>` element

●`<frame>` or `<iframe>` elements have a title

●`<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

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

●Touch targets have sufficient size and spacing.

●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

○ARIA IDs are unique

○No form fields have multiple labels

○`<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

○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 display dimensions should match natural aspect ratio. Learn more about image aspect ratio.

Why this matters

Performance issues directly impact user engagement and conversion rates.

	URL	Aspect Ratio (Displayed)	Aspect Ratio (Actual)
State Of The Software Supply Chain Report `div.SccrAd-module-scss-module__cu9oPa__productContainer > div.SccrAd-module-scss-module__cu9oPa__container > div.SccrAd-module-scss-module__cu9oPa__image > img`	central.sonatype.com/_next/static/media/SSCR26-book-mock.a6bdab2e.png	288 x 229 (1.26)	972 x 613 (1.59)

General

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Source	Description
central.sonatype.com/?smo=true	Access to fetch at 'https://identity.sonatype.com/authorize?client_id=H6OeHHDPADwvGyY5oN6Oh82tPO0tqbsT&scope=openid%20profile%20email%20offline_access&response_type=code&redirect_uri=https%3A%2F%2Fcentral.sonatype.com%2Fapi%2Fauth%2Fcallback&audience=central-portal-api&nonce=7dIUi1l9aJ_lUwajkXxjHpeWt6jJN4z-8F5PDBXQOzs&state=eyJyZXR1cm5UbyI6Imh0dHBzOi8vY2VudHJhbC5zb25hdHlwZS5jb20vP3Ntbz10cnVlIn0&code_challenge_method=S256&code_challenge=TR97GU1ls9PGDjGnN_ZkLVvVOS_m1MpweY_LELYXY78' (redirected from 'https://central.sonatype.com/api/auth/login?_rsc=1r34m') from origin 'https://central.sonatype.com' has been blocked by CORS policy: Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource.
maven.org/main-es2015.76540079f641857f2387.js	ERROR TypeError: window.ga is not a function at d._next (https://maven.org/main-es2015.76540079f641857f2387.js:1:735442) at d.__tryOrUnsub (https://maven.org/main-es2015.76540079f641857f2387.js:1:66910) at d.next (https://maven.org/main-es2015.76540079f641857f2387.js:1:66131) at l._next (https://maven.org/main-es2015.76540079f641857f2387.js:1:65302) at l.next (https://maven.org/main-es2015.76540079f641857f2387.js:1:65076) at t.next (https://maven.org/main-es2015.76540079f641857f2387.js:1:367031) at d._next (https://maven.org/main-es2015.76540079f641857f2387.js:1:605562) at d.__tryOrUnsub (https://maven.org/main-es2015.76540079f641857f2387.js:1:66910) at d.next (https://maven.org/main-es2015.76540079f641857f2387.js:1:66131) at l._next (https://maven.org/main-es2015.76540079f641857f2387.js:1:65302)
/authorize?client_id=H6OeHHDPADwvGyY5oN6Oh82tPO0tqbsT&sco...	`Failed to load resource: net::ERR_FAILED`

Source maps translate minified code to the original source code. This helps developers debug in production. In addition, Lighthouse is able to provide further insights. Consider deploying source maps to take advantage of these benefits. Learn more about source maps.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL
central.sonatype.com/_next/static/chunks/e74bc7b807f472d5.js
central.sonatype.com/_next/static/chunks/d5a7727462d482f9.js
central.sonatype.com/_next/static/chunks/8a1b799380a42a65.js

●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

●Serves images with appropriate resolution

●Page has the HTML doctype

●Properly defines charset

●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

○Redirects HTTP traffic to HTTPS

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
central.sonatype.com/partners/	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

●Image elements have `[alt]` attributes

●Document has a valid `hreflang`

●Document has a valid `rel=canonical`

○robots.txt is valid