Greenroofthinktank.org GRiT
The Green Roof Information Think-tank (GRIT) is a network of businesses, government agencies, non-profit organizations, researchers and community ...
greenroofthinktank.org Mobile Performance
26/100
These metrics represent real-world Chrome users experience viewing greenroofthinktank.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
Largest Contentful Paint0/100 14.2 s
Largest Contentful Paint marks the time at which the largest text or image is painted. Learn More
First Contentful Paint7/100 7.4 s
First Contentful Paint marks the time at which the first text or image is painted. Learn more.
Cumulative Layout Shift14/100 0.535
Cumulative Layout Shift measures the movement of visible elements within the viewport. Learn more.
Speed Index19/100 8.4 s
Speed Index shows how quickly the contents of a page are visibly populated. Learn more.
Time to Interactive42/100 8.1 s
Time to interactive is the amount of time it takes for the page to become fully interactive. Learn more.
Total Blocking Time62/100 500 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds. Learn more.
Should Fix (17)
Opportunities
These suggestions can help your page load faster. They don't directly affect the Performance score.
Serve images in next-gen formats
Potential savings of 1,372 KiB
7,170 ms
Eliminate render-blocking resources
Potential savings of 3,980 ms
3,977 ms
Properly size images
Potential savings of 709 KiB
3,510 ms
Efficiently encode images
Potential savings of 375 KiB
1,920 ms
Remove unused JavaScript
Potential savings of 166 KiB
1,570 ms
Remove unused CSS
Potential savings of 52 KiB
300 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 770 ms
Ensure text remains visible during webfont load
Avoid enormous network payloads
Total size was 8,982 KiB
Serve static assets with an efficient cache policy
21 resources found
Minimize main-thread work
4.2 s
Reduce JavaScript execution time
2.3 s
Avoid large layout shifts
3 elements found
Keep request counts low and transfer sizes small
44 requests • 8,982 KiB
Avoid chaining critical requests
16 chains found
Largest Contentful Paint element
1 element found
Avoid long main-thread tasks
8 long tasks found
Passed Audits (15)
Use video formats for animated content
Minify CSS
Avoids large JavaScript libraries with smaller alternatives
0 large libraries found
Avoids `document.write()`
Remove duplicate modules in JavaScript bundles
Preconnect to required origins
Enable text compression
Avoids an excessive DOM size
352 elements
Minify JavaScript
Avoid serving legacy JavaScript to modern browsers
Potential savings of 24 KiB
Defer offscreen images
Potential savings of 1,168 KiB
Avoid multiple page redirects
Potential savings of 630 ms
Preload key requests
Uses passive listeners to improve scrolling performance
Initial server response time was short
Root document took 330 ms
greenroofthinktank.org Mobile SEO
100/100
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.
Passed Audits (14)
Links have descriptive text
Page isn’t blocked from indexing
Links are crawlable
Page has successful HTTP status code
Document has a valid `rel=canonical`
Document avoids plugins
Document uses legible font sizes
99.99% legible text
Document has a `<title>` element
robots.txt is valid
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
Document has a valid `hreflang`
Document has a meta description
Image elements have `[alt]` attributes
Tap targets are sized appropriately
100% appropriately sized tap targets
greenroofthinktank.org Mobile Best Practices
86/100
These checks highlight opportunities to improve the overall code health of greenroofthinktank.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 (2)
Trust and Safety
Does not use HTTPS
1 insecure request found
Links to cross-origin destinations are unsafe
Passed Audits (14)
Avoids Application Cache
Avoids requesting the notification permission on page load
Avoids `unload` event listeners
Displays images with correct aspect ratio
Avoids deprecated APIs
Allows users to paste into password fields
Page has the HTML doctype
Page has valid source maps
Serves images with appropriate resolution
Properly defines charset
Avoids front-end JavaScript libraries with known security vulnerabilities
Avoids requesting the geolocation permission on page load
No browser errors logged to the console
Detected JavaScript libraries
greenroofthinktank.org Mobile Progressive Web App
46/100
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 (9)
Fast and reliable
Current page does not respond with a 200 when offline
`start_url` does not respond with a 200 when offline
Installable
Does not use HTTPS
1 insecure request found
Web app manifest does not meet the installability requirements
Does not register a service worker that controls page and `start_url`
PWA Optimized
Does not set a theme color for the address bar.
Does not provide a valid `apple-touch-icon`
Is not configured for a custom splash screen
Manifest doesn't have a maskable icon
Passed Audits (5)
Page load is fast enough on mobile networks
Content is sized correctly for the viewport
Contains some content when JavaScript is not available
Redirects HTTP traffic to HTTPS
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
greenroofthinktank.org Mobile 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)
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.
Links do not have a discernible name
Contrast
These are opportunities to improve the legibility of your content.
Background and foreground colors do not have a sufficient contrast ratio.
Passed Audits (18)
`[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.
`[aria-hidden="true"]` is not present on the document `<body>`
`[aria-*]` attributes are valid and not misspelled
`[aria-*]` attributes match their roles
`[id]` attributes on active, focusable elements are unique
Heading elements appear in a sequentially-descending order
Buttons have an accessible name
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]`s have all required `[aria-*]` attributes
`[role]` values are valid
Document has a `<title>` element
The page contains a heading, skip link, or landmark region
No element has a `[tabindex]` value greater than 0
`<html>` element has a `[lang]` attribute
Image elements have `[alt]` attributes
`<html>` element has a valid value for its `[lang]` attribute
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www.greenroofthinktanko.org
www.greenroofthinktanok.org