Wandellschool.org Saddle River School District / Overview
wandellschool.org Desktop Performance
55/100
These metrics represent real-world Chrome users experience viewing wandellschool.org web page. 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.
User Loading Experience
Largest Contentful Paint
Cumulative Layout Shift
First Input Delay
First Contentful Paint
Metrics
First Contentful Paint26/100 2.1 s
First Contentful Paint marks the time at which the first text or image is painted. Learn more.
Speed Index31/100 2.9 s
Speed Index shows how quickly the contents of a page are visibly populated. Learn more.
Largest Contentful Paint35/100 2.9 s
Largest Contentful Paint marks the time at which the largest text or image is painted. Learn More
Total Blocking Time81/100 200 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds. Learn more.
Time to Interactive83/100 2.9 s
Time to interactive is the amount of time it takes for the page to become fully interactive. Learn more.
Cumulative Layout Shift100/100 0.032
Cumulative Layout Shift measures the movement of visible elements within the viewport. Learn more.
Should Fix (16)
Opportunities
These suggestions can help your page load faster. They don't directly affect the Performance score.
Avoid multiple page redirects
Potential savings of 3,510 ms
3,510 ms
Eliminate render-blocking resources
Potential savings of 730 ms
734 ms
Reduce initial server response time
Root document took 1,010 ms
410 ms
Remove unused CSS
Potential savings of 617 KiB
240 ms
Remove unused JavaScript
Potential savings of 74 KiB
80 ms
Minify CSS
Potential savings of 20 KiB
80 ms
Diagnostics
More information about the performance of your application. These numbers don't directly affect the Performance score.
Reduce the impact of third-party code
Third-party code blocked the main thread for 260 ms
Ensure text remains visible during webfont load
Does not use passive listeners to improve scrolling performance
Serve static assets with an efficient cache policy
53 resources found
Avoid an excessive DOM size
1,711 elements
Avoid chaining critical requests
53 chains found
Largest Contentful Paint element
1 element found
Avoid long main-thread tasks
2 long tasks found
Avoid large layout shifts
5 elements found
Keep request counts low and transfer sizes small
74 requests • 1,540 KiB
Passed Audits (13)
Avoids enormous network payloads
Total size was 1,540 KiB
Avoids `document.write()`
Enable text compression
Preload key requests
Serve images in next-gen formats
Potential savings of 83 KiB
Efficiently encode images
Defer offscreen images
Preconnect to required origins
JavaScript execution time
0.6 s
Minimizes main-thread work
1.4 s
Use video formats for animated content
Minify JavaScript
Potential savings of 21 KiB
Properly size images
Potential savings of 27 KiB
wandellschool.org Desktop SEO
80/100
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 (2)
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
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Links are not crawlable
Passed Audits (8)
Document has a valid `hreflang`
Page has successful HTTP status code
Image elements have `[alt]` attributes
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
Document has a `<title>` element
Page isn’t blocked from indexing
Links have descriptive text
Document avoids plugins
wandellschool.org Desktop Best Practices
62/100
These checks highlight opportunities to improve the overall code health of wandellschool.org 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 (5)
General
Uses deprecated APIs
1 warning found
Trust and Safety
Includes front-end JavaScript libraries with known security vulnerabilities
5 vulnerabilities detected
Does not use HTTPS
2 insecure requests found
Links to cross-origin destinations are unsafe
Browser Compatibility
Page lacks the HTML doctype, thus triggering quirks-mode
Passed Audits (9)
Avoids Application Cache
Avoids requesting the geolocation permission on page load
Detected JavaScript libraries
Serves images with appropriate resolution
Avoids requesting the notification permission on page load
Displays images with correct aspect ratio
Properly defines charset
Allows users to paste into password fields
No browser errors logged to the console
wandellschool.org Desktop Progressive Web App
19/100
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 (10)
PWA Optimized
Does not set a theme color for the address bar.
Manifest doesn't have a maskable icon
Is not configured for a custom splash screen
Does not provide a valid `apple-touch-icon`
Fast and reliable
Page load is not fast enough on mobile networks
Interactive on simulated mobile network at 12.2 s
`start_url` does not respond with a 200 when offline
Current page does not respond with a 200 when offline
Installable
Does not use HTTPS
2 insecure requests found
Does not register a service worker that controls page and `start_url`
Web app manifest does not meet the installability requirements
Passed Audits (3)
Redirects HTTP traffic to HTTPS
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
Contains some content when JavaScript is not available
wandellschool.org Desktop Accessibility
96/100
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 (2)
Tables and lists
These are opportunities to to improve the experience of reading tabular or list data using assistive technology, like a screen reader.
List items (`<li>`) are not contained within `<ul>` or `<ol>` parent elements.
ARIA
These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.
`[aria-hidden="true"]` elements contain focusable descendents
Passed Audits (22)
Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
`[aria-*]` attributes match their roles
No element has a `[tabindex]` value greater than 0
Image elements have `[alt]` attributes
`[aria-hidden="true"]` is not present on the document `<body>`
Background and foreground colors have a sufficient contrast ratio
Document has a `<title>` element
The page contains a heading, skip link, or landmark region
Buttons have an accessible name
`<html>` element has a `[lang]` attribute
ARIA IDs are unique
`[role]`s are contained by their required parent element
`[aria-*]` attributes have valid values
`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.
`<html>` element has a valid value for its `[lang]` attribute
Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.
Links have a discernible name
`[role]`s have all required `[aria-*]` attributes
Heading elements appear in a sequentially-descending order
`[id]` attributes on active, focusable elements are unique
`[role]` values are valid
`[aria-*]` attributes are valid and not misspelled
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