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Lighthouse Desktop

· 0 checks — Desktop Lighthouse audit -- Performance, Accessibility, Best Practices, and SEO category breakdown.
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Detailed Report

Audit breakdown by category with detailed findings.

91

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.

RequestCache TTLTransfer Size
the-spider.com/generated-images/WsTajCWIuEOdCxCm.png0.0 ms465.6 KiB
the-spider.com/images/ns-auora.jpg0.0 ms386.6 KiB
the-spider.com/images/outlook.png0.0 ms374.4 KiB
the-spider.com/fonts/lato-light.woff0.0 ms274.8 KiB
the-spider.com/fonts/lato-regular.woff0.0 ms273.8 KiB
the-spider.com/generated-images/ZAVqjArjfPEjvbqK.jpeg0.0 ms145.2 KiB
the-spider.com/generated-images/TrDqrtkiYuQNxBNI.jpeg0.0 ms132.9 KiB
the-spider.com/generated-images/VcuLZnBtXvbeGROe.jpeg0.0 ms131.9 KiB
the-spider.com/generated-images/pdXxFtBxRAStszSW.jpeg0.0 ms92.5 KiB
the-spider.com/generated-images/KbYmjRgocIMRaQhS.jpeg0.0 ms84.8 KiB
the-spider.com/generated-images/iwTwqeeEGeSgquud.jpeg0.0 ms81.9 KiB
the-spider.com/generated-images/ACHItFZtDUVvyPsk.jpeg0.0 ms78.7 KiB
the-spider.com/generated-images/sOmljjBjcklKUkot.jpeg0.0 ms74.6 KiB
the-spider.com/generated-images/krXwCThIEtZTErFi.jpeg0.0 ms67.4 KiB
the-spider.com/generated-images/WKUOiyMZMePUWGpF.jpeg0.0 ms65.6 KiB
the-spider.com/generated-images/XoQUKmTuaqGcQLTm.jpeg0.0 ms63.6 KiB
the-spider.com/generated-images/CbOInLbRYFROBJaB.jpeg0.0 ms57.8 KiB
the-spider.com/generated-images/BTEzxHsRpMCdyFZn.jpeg0.0 ms57.0 KiB
the-spider.com/generated-images/TmTYliQLLCUsKJIB.jpeg0.0 ms55.0 KiB
the-spider.com/generated-images/ZtSmxveJjssVeNDP.jpeg0.0 ms53.0 KiB
the-spider.com/generated-images/OmKbrTBtIRInBMuK.jpeg0.0 ms52.0 KiB
the-spider.com/generated-images/QlnDLGNgqtSbGJmj.jpeg0.0 ms43.3 KiB
the-spider.com/generated-images/gnXQxtMRRhVXXeAq.jpeg0.0 ms36.6 KiB
the-spider.com/css/bootstrap.min.css0.0 ms30.2 KiB
the-spider.com/js/jquery.min.js0.0 ms29.9 KiB
the-spider.com/js/bootstrap.bundle.min.js0.0 ms23.4 KiB
the-spider.com/css/bootstrap-icons.min.css0.0 ms13.5 KiB
the-spider.com/images/bitwarden-icon.png0.0 ms6.4 KiB
the-spider.com/images/mattermost.svg0.0 ms1.3 KiB

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.

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
outlook-icon div.container-fluid > div.navbar-brand > a > img
the-spider.com/images/outlook.png381.4 KiB374.2 KiB
'We just hit somebody' - Frontier Airlines plane kills runway trespasser at Den… div#newsCarousel > div.carousel-inner > div.carousel-item > img.d-block
the-spider.com/generated-images/XoQUKmTuaqGcQLTm.jpeg63.6 KiB33.7 KiB
bitwarden-icon div.container-fluid > div.navbar-brand > a > img
the-spider.com/images/bitwarden-icon.png7.9 KiB6.4 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-3-DIV
nodeLabel: The-Spider.com A homepage for spiders
path: 1,HTML,1,BODY,0,DIV
selector: body > div.jumbotron
snippet: <div class="jumbotron jumbotron-fluid jumbotron-first">

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

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.

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.

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

Diagnostics

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 2.2 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: 0.0 ms 40.6 KiB
URLTransfer SizeEst Savings
the-spider.com/css/bootstrap.min.css30.1 KiB27.1 KiB
the-spider.com/css/bootstrap-icons.min.css13.5 KiB13.5 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
'We just hit somebody' - Frontier Airlines plane kills runway trespasser at Den… div#newsCarousel > div.carousel-inner > div.carousel-item > img.d-block
the-spider.com/generated-images/XoQUKmTuaqGcQLTm.jpeg

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

Time to Interactive 1.9 s
Layout shift culprits
Optimize DOM size
Forced reflow
LCP breakdown
Modern HTTP
Optimize viewport for mobile
Max Potential First Input Delay 60 ms
Minify JavaScript
Reduce unused JavaScript
JavaScript execution time 0.0 s
Minimizes main-thread work 0.3 s
Avoid long main-thread tasks 1 long task found
Avoid non-composited animations 1 animated element found
Page didn't prevent back/forward cache restoration
Network Requests
Network Round Trip Times 120 ms
Server Backend Latencies 310 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 250 ms
Avoid large layout shifts 1 layout shift found
INP breakdown
User Timing marks and measures
94

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
Google div.row > ul.nav > li.nav-item > button#pills-google-tab
Go! div#pills-google > form > div.input-group > button.btn

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
'We just hit somebody' - Frontier Airlines plane kills runway trespasser at Den… div.carousel-inner > div.carousel-item > div.carousel-caption > h5

These are opportunities to improve keyboard navigation in your application.

Best practices

One main landmark helps screen reader users navigate a web page. Learn more about landmarks.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
html html

These items highlight common accessibility best practices.

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
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
`[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
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.
Deprecated ARIA roles were not used
`[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 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.
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.
Identical links have the same purpose.
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

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.

SourceDescription
Manifest: Line: 1, column: 1, Syntax error.
Manifest: Line: 1, column: 1, Syntax error.
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
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 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
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.

Content Best Practices

Meta descriptions may be included in search results to concisely summarize page content. Learn more about the meta description.

Why this matters

Performance issues directly impact user engagement and conversion rates.

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
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`

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