881summit2.blogspot.hk 商業電台 881 光明頂
881summit2.blogspot.hk Mobile Performance
94/100
These metrics represent real-world Chrome users experience viewing 881summit2.blogspot.hk 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 Paint83/100 2.8 s
Largest Contentful Paint marks the time at which the largest text or image is painted. Learn More
First Contentful Paint95/100 2.0 s
First Contentful Paint marks the time at which the first text or image is painted. Learn more.
Time to Interactive97/100 2.8 s
Time to interactive is the amount of time it takes for the page to become fully interactive. Learn more.
Speed Index99/100 2.0 s
Speed Index shows how quickly the contents of a page are visibly populated. Learn more.
Cumulative Layout Shift100/100 0
Cumulative Layout Shift measures the movement of visible elements within the viewport. 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.
Should Fix (6)
Opportunities
These suggestions can help your page load faster. They don't directly affect the Performance score.
Eliminate render-blocking resources
Potential savings of 740 ms
741 ms
Remove unused JavaScript
Potential savings of 39 KiB
300 ms
Diagnostics
More information about the performance of your application. These numbers don't directly affect the Performance score.
Avoid long main-thread tasks
3 long tasks found
Avoid chaining critical requests
2 chains found
Largest Contentful Paint element
1 element found
Keep request counts low and transfer sizes small
14 requests • 111 KiB
Passed Audits (22)
Minimizes main-thread work
1.1 s
Preconnect to required origins
Uses passive listeners to improve scrolling performance
Minify CSS
Defer offscreen images
Efficiently encode images
All text remains visible during webfont loads
Minimize third-party usage
Third-party code blocked the main thread for 0 ms
Properly size images
Initial server response time was short
Root document took 240 ms
Avoids an excessive DOM size
242 elements
Minify JavaScript
Avoid multiple page redirects
Potential savings of 630 ms
Remove unused CSS
Preload key requests
Enable text compression
Serve images in next-gen formats
JavaScript execution time
0.2 s
Avoids `document.write()`
Avoids enormous network payloads
Total size was 111 KiB
Uses efficient cache policy on static assets
8 resources found
Use video formats for animated content
881summit2.blogspot.hk Mobile SEO
86/100
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
Image elements do not have `[alt]` attributes
Passed Audits (12)
Document avoids plugins
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
Tap targets are sized appropriately
100% appropriately sized tap targets
Page has successful HTTP status code
Document uses legible font sizes
100% legible text
robots.txt is valid
Links have descriptive text
Document has a `<title>` element
Page isn’t blocked from indexing
Document has a valid `hreflang`
Document has a valid `rel=canonical`
Links are crawlable
881summit2.blogspot.hk Mobile Best Practices
77/100
These checks highlight opportunities to improve the overall code health of 881summit2.blogspot.hk 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 (3)
User Experience
Serves images with low resolution
Trust and Safety
Does not use HTTPS
4 insecure requests found
Links to cross-origin destinations are unsafe
Passed Audits (11)
Allows users to paste into password fields
Avoids front-end JavaScript libraries with known security vulnerabilities
No browser errors logged to the console
Page has the HTML doctype
Properly defines charset
Avoids requesting the notification permission on page load
Detected JavaScript libraries
Avoids deprecated APIs
Avoids Application Cache
Avoids requesting the geolocation permission on page load
Displays images with correct aspect ratio
881summit2.blogspot.hk Mobile Progressive Web App
39/100
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 provide a valid `apple-touch-icon`
Manifest doesn't have a maskable icon
Does not redirect HTTP traffic to HTTPS
Is not configured for a custom splash screen
Does not set a theme color for the address bar.
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
4 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 (4)
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
Page load is fast enough on mobile networks
Content is sized correctly for the viewport
Contains some content when JavaScript is not available
881summit2.blogspot.hk Mobile Accessibility
57/100
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 (3)
Best practices
These items highlight common accessibility best practices.
`[user-scalable="no"]` is used in the `<meta name="viewport">` element or the `[maximum-scale]` attribute is less than 5.
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
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)
`<html>` element has a valid value for its `[lang]` attribute
`[id]` attributes on active, focusable elements are unique
Document has a `<title>` element
`<html>` element has a `[lang]` attribute
`[aria-hidden="true"]` is not present on the document `<body>`
Links have a discernible name
Heading elements appear in a sequentially-descending order
The page contains a heading, skip link, or landmark region
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