Cwgv.com.tw
cwgv.com.tw Mobile Performance
49/100
These metrics represent real-world Chrome users experience viewing cwgv.com.tw 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
Speed Index21/100 8.2 s
Speed Index shows how quickly the contents of a page are visibly populated. Learn more.
Time to Interactive27/100 10.0 s
Time to interactive is the amount of time it takes for the page to become fully interactive. Learn more.
Largest Contentful Paint45/100 4.2 s
Largest Contentful Paint marks the time at which the largest text or image is painted. Learn More
First Contentful Paint49/100 4.0 s
First Contentful Paint marks the time at which the first text or image is painted. Learn more.
Total Blocking Time73/100 430 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds. Learn more.
Cumulative Layout Shift100/100 0.011
Cumulative Layout Shift measures the movement of visible elements within the viewport. Learn more.
Should Fix (14)
Opportunities
These suggestions can help your page load faster. They don't directly affect the Performance score.
Eliminate render-blocking resources
Potential savings of 2,990 ms
2,992 ms
Remove unused JavaScript
Potential savings of 314 KiB
2,740 ms
Remove unused CSS
Potential savings of 16 KiB
270 ms
Minify JavaScript
Potential savings of 7 KiB
150 ms
Enable text compression
Potential savings of 2 KiB
150 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 270 ms
Serve static assets with an efficient cache policy
30 resources found
Minimize main-thread work
3.5 s
Reduce JavaScript execution time
1.6 s
Largest Contentful Paint element
1 element found
Avoid large layout shifts
3 elements found
Keep request counts low and transfer sizes small
89 requests • 830 KiB
Avoid chaining critical requests
15 chains found
Avoid long main-thread tasks
14 long tasks found
Passed Audits (15)
Defer offscreen images
Efficiently encode images
Preconnect to required origins
Initial server response time was short
Root document took 560 ms
Serve images in next-gen formats
Avoids `document.write()`
Preload key requests
Avoid multiple page redirects
Potential savings of 630 ms
Uses passive listeners to improve scrolling performance
Use video formats for animated content
All text remains visible during webfont loads
Properly size images
Minify CSS
Avoids an excessive DOM size
164 elements
Avoids enormous network payloads
Total size was 830 KiB
cwgv.com.tw Mobile SEO
90/100
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)
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.
Tap targets are not sized appropriately
75% appropriately sized tap targets
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Page is blocked from indexing
Passed Audits (11)
Links have descriptive text
Document has a meta description
Document uses legible font sizes
100% legible text
Links are crawlable
robots.txt is valid
Image elements have `[alt]` attributes
Page has successful HTTP status code
Document avoids plugins
Document has a valid `hreflang`
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
Document has a `<title>` element
cwgv.com.tw Mobile Best Practices
62/100
These checks highlight opportunities to improve the overall code health of cwgv.com.tw 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 (5)
Trust and Safety
Does not use HTTPS
1 insecure request found
Includes front-end JavaScript libraries with known security vulnerabilities
5 vulnerabilities detected
Links to cross-origin destinations are unsafe
User Experience
Serves images with low resolution
General
Browser errors were logged to the console
Passed Audits (9)
Page has the HTML doctype
Avoids requesting the notification permission on page load
Allows users to paste into password fields
Avoids requesting the geolocation permission on page load
Detected JavaScript libraries
Displays images with correct aspect ratio
Properly defines charset
Avoids deprecated APIs
Avoids Application Cache
cwgv.com.tw Mobile Progressive Web App
21/100
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)
Installable
Web app manifest does not meet the installability requirements
Does not use HTTPS
1 insecure request found
Does not register a service worker that controls page and `start_url`
PWA Optimized
Manifest doesn't have a maskable icon
Is not configured for a custom splash screen
Does not set a theme color for the address bar.
Does not provide a valid `apple-touch-icon`
Fast and reliable
Current page does not respond with a 200 when offline
Page load is not fast enough on mobile networks
Interactive at 10.0 s
`start_url` does not respond with a 200 when offline
Passed Audits (4)
Contains some content when JavaScript is not available
Content is sized correctly for the viewport
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
Redirects HTTP traffic to HTTPS
cwgv.com.tw Mobile Accessibility
80/100
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 (4)
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
Form elements do not have associated labels
Navigation
These are opportunities to improve keyboard navigation in your application.
Heading elements are not in a sequentially-descending order
Contrast
These are opportunities to improve the legibility of your content.
Background and foreground colors do not have a sufficient contrast ratio.
Passed Audits (12)
`[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 `[lang]` attribute
The page contains a heading, skip link, or landmark region
Buttons have an accessible name
`<html>` element has a valid value for its `[lang]` attribute
Image elements have `[alt]` attributes
`[aria-hidden="true"]` elements do not contain focusable descendents
No element has a `[tabindex]` value greater than 0
Document has a `<title>` element
`[aria-hidden="true"]` is not present on the document `<body>`
`[id]` attributes on active, focusable elements are unique
ARIA IDs are unique
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