Thencat.org NCAT Homepage
thencat.org Mobile Performance
96/100
These metrics represent real-world Chrome users experience viewing thencat.org on mobile devices. Reports are focused on loading performance and other critical factors that most affect user experience. Follow our guide to track, optimize, and improve the quality of your web pages.
Metrics
Cumulative Layout Shift46/100 0.271
Cumulative Layout Shift measures the movement of visible elements within the viewport. Learn more.
Time to Interactive95/100 3.2 s
Time to interactive is the amount of time it takes for the page to become fully interactive. Learn more.
Largest Contentful Paint96/100 2.1 s
Largest Contentful Paint marks the time at which the largest text or image is painted. Learn More
Total Blocking Time100/100 30 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds. Learn more.
Speed Index100/100 1.3 s
Speed Index shows how quickly the contents of a page are visibly populated. Learn more.
First Contentful Paint100/100 1.3 s
First Contentful Paint marks the time at which the first text or image is painted. Learn more.
Should Fix (9)
Opportunities
These suggestions can help your page load faster. They don't directly affect the Performance score.
Efficiently encode images
Potential savings of 49 KiB
450 ms
Serve images in next-gen formats
Potential savings of 54 KiB
450 ms
Eliminate render-blocking resources
Potential savings of 170 ms
169 ms
Diagnostics
More information about the performance of your application. These numbers don't directly affect the Performance score.
Serve static assets with an efficient cache policy
12 resources found
Keep request counts low and transfer sizes small
16 requests • 139 KiB
Avoid long main-thread tasks
3 long tasks found
Avoid chaining critical requests
1 chain found
Largest Contentful Paint element
1 element found
Avoid large layout shifts
4 elements found
Passed Audits (20)
Remove unused CSS
Initial server response time was short
Root document took 50 ms
Preconnect to required origins
Minify CSS
Minimize third-party usage
Third-party code blocked the main thread for 50 ms
Properly size images
Potential savings of 8 KiB
Use video formats for animated content
Avoid multiple page redirects
Potential savings of 630 ms
Uses passive listeners to improve scrolling performance
Avoids an excessive DOM size
176 elements
Avoids `document.write()`
Minify JavaScript
Preload key requests
Remove unused JavaScript
All text remains visible during webfont loads
Avoids enormous network payloads
Total size was 139 KiB
Minimizes main-thread work
0.6 s
Defer offscreen images
Enable text compression
JavaScript execution time
0.2 s
thencat.org Mobile SEO
62/100
These checks ensure that your page is optimized for search engine results ranking. There are additional factors Lighthouse does not check that may affect your search ranking. Learn more. Run these additional validators on your site to check additional SEO best practices.
Should Fix (5)
Mobile Friendly
Make sure your pages are mobile friendly so users don’t have to pinch or zoom in order to read the content pages. Learn more.
Document doesn't use legible font sizes
Does not have a `<meta name="viewport">` tag with `width` or `initial-scale`
Tap targets are not sized appropriately
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Document does not have a meta description
Image elements do not have `[alt]` attributes
Passed Audits (8)
Links have descriptive text
Document avoids plugins
robots.txt is valid
Links are crawlable
Page isn’t blocked from indexing
Document has a valid `hreflang`
Document has a `<title>` element
Page has successful HTTP status code
thencat.org Mobile Best Practices
69/100
These checks highlight opportunities to improve the overall code health of thencat.org mobile page. Current recommendations will help to make your page fast and secure, to create a good user experience and to avoid deprecated technologies.
Should Fix (4)
Trust and Safety
Does not use HTTPS
1 insecure request found
Browser Compatibility
Page lacks the HTML doctype, thus triggering quirks-mode
User Experience
Serves images with low resolution
Displays images with incorrect aspect ratio
Passed Audits (10)
Avoids front-end JavaScript libraries with known security vulnerabilities
Properly defines charset
Links to cross-origin destinations are safe
Detected JavaScript libraries
Avoids requesting the notification permission on page load
Avoids deprecated APIs
No browser errors logged to the console
Avoids Application Cache
Allows users to paste into password fields
Avoids requesting the geolocation permission on page load
thencat.org Mobile Progressive Web App
36/100
These checks validate the aspects of a Progressive Web App. Learn more. These checks are required by the baseline PWA Checklist but are not automatically checked by Lighthouse. They do not affect your score but it's important that you verify them manually.
Should Fix (11)
PWA Optimized
Is not configured for a custom splash screen
Does not set a theme color for the address bar.
Does not have a `<meta name="viewport">` tag with `width` or `initial-scale`
Content is not sized correctly for the viewport
Does not provide a valid `apple-touch-icon`
Manifest doesn't have a maskable icon
Installable
Does not register a service worker that controls page and `start_url`
Does not use HTTPS
1 insecure request found
Web app manifest does not meet the installability requirements
Fast and reliable
Current page does not respond with a 200 when offline
`start_url` does not respond with a 200 when offline
Passed Audits (3)
Contains some content when JavaScript is not available
Page load is fast enough on mobile networks
Redirects HTTP traffic to HTTPS
thencat.org Mobile Accessibility
51/100
These checks highlight opportunities to improve the accessibility of your web app. Only a subset of accessibility issues can be automatically detected so manual testing is also encouraged. These items address areas which an automated testing tool cannot cover. Learn more in our guide on conducting an accessibility review.
Should Fix (5)
Internationalization and localization
These are opportunities to improve the interpretation of your content by users in different locales.
`<html>` element does not have a `[lang]` attribute
Names and labels
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.
Image elements do not have `[alt]` attributes
Links do not have a discernible name
Form elements do not have associated labels
Contrast
These are opportunities to improve the legibility of your content.
Background and foreground colors do not have a sufficient contrast ratio.
Passed Audits (8)
Presentational `<table>` elements avoid using `<th>`, `<caption>` or the `[summary]` attribute.
Heading elements appear in a sequentially-descending order
Document has a `<title>` element
Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.
List items (`<li>`) are contained within `<ul>` or `<ol>` parent elements
The page contains a heading, skip link, or landmark region
`[aria-hidden="true"]` is not present on the document `<body>`
Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
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