Yanzhuangsfeicui.com Site Title

上海衍庄水泵管道设备配套有限公司，水泵设施安装，水泵设施维修

Yanzhuangsfeicui.com Meta Description

上海衍庄水泵管道设备配套有限公司成立于2008年08月日，注册地位于上海市徐汇区下罗秀路113号414室，法定代表人为陆雪星，经营范围包括给水设备、水泵设施的安装、维修，水电工程施工，水电设备维修，水箱清洗，建筑材料、金属材料、五金交电、水管阀门的销售，给水设施领域内的技术开发、技术咨询、技术服务，商务信息咨询。【依法须经批准的项目，经相关部门批准后方可开展经营活动】

Yanzhuangsfeicui.com Test Results

Yanzhuangsfeicui.com Mobile Performance: 67/100
Quick overview:
First Meaningful Paint
2.7 s
First Meaningful Paint measures when the primary content of a page is visible. Learn more about the First Meaningful Paint metric.
Script Treemap Data
Used for treemap app
Diagnostics
Collection of useful page vitals.
Server Backend Latencies
330 ms
Server latencies can impact web performance. If the server latency of an origin is high, it's an indication the server is overloaded or has poor backend performance. Learn more about server response time.
Metrics
Collects all available metrics.
Tasks
Lists the toplevel main thread tasks that executed during page load.
Final Screenshot
The last screenshot captured of the pageload.

1090507227966

Network Round Trip Times
10 ms
Network round trip times (RTT) have a large impact on performance. If the RTT to an origin is high, it's an indication that servers closer to the user could improve performance. Learn more about the Round Trip Time.
Network Requests
Lists the network requests that were made during page load.

Yanzhuangsfeicui.com Mobile SEO: 94/100
Quick overview:
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 how to make pages mobile-friendly.
Tap targets are not sized appropriately
28% appropriately sized tap targets
Interactive elements like buttons and links should be large enough (48x48px), or have enough space around them, to be easy enough to tap without overlapping onto other elements. Learn more about tap targets.

Yanzhuangsfeicui.com Mobile Best Practices: 73/100
Quick overview:
Trust and Safety
Does not use HTTPS
17 insecure requests found
All sites should be protected with HTTPS, even ones that don't handle sensitive data. This includes avoiding mixed content, where some resources are loaded over HTTP despite the initial request being served over HTTPS. HTTPS prevents intruders from tampering with or passively listening in on the communications between your app and your users, and is a prerequisite for HTTP/2 and many new web platform APIs. Learn more about HTTPS.
Ensure CSP is effective against XSS attacks
A strong Content Security Policy (CSP) significantly reduces the risk of cross-site scripting (XSS) attacks. Learn how to use a CSP to prevent XSS
General
Registers an `unload` listener
The `unload` event does not fire reliably and listening for it can prevent browser optimizations like the Back-Forward Cache. Use `pagehide` or `visibilitychange` events instead. Learn more about unload event listeners
Detected JavaScript libraries
All front-end JavaScript libraries detected on the page. Learn more about this JavaScript library detection diagnostic audit.
Yanzhuangsfeicui.com Mobile PWA: 38/100
Quick overview:
PWA Optimized
Is not configured for a custom splash screen
A themed splash screen ensures a high-quality experience when users launch your app from their homescreens. Learn more about splash screens. Failures: No manifest was fetched.
Does not set a theme color for the address bar.
The browser address bar can be themed to match your site. Learn more about theming the address bar. Failures: No manifest was fetched, No `<meta name="theme-color">` tag found.
Manifest doesn't have a maskable icon
A maskable icon ensures that the image fills the entire shape without being letterboxed when installing the app on a device. Learn about maskable manifest icons. No manifest was fetched
Installable
Web app manifest or service worker do not meet the installability requirements
1 reason
Service worker is the technology that enables your app to use many Progressive Web App features, such as offline, add to homescreen, and push notifications. With proper service worker and manifest implementations, browsers can proactively prompt users to add your app to their homescreen, which can lead to higher engagement. Learn more about manifest installability requirements.
Yanzhuangsfeicui.com Mobile Accessibility: 71/100
Quick overview:
Document has a main landmark.
One main landmark helps screen reader users navigate a web page. Learn more about landmarks.
Contrast
These are opportunities to improve the legibility of your content.
Background and foreground colors do not have a sufficient contrast ratio.
Low-contrast text is difficult or impossible for many users to read. Learn how to provide sufficient color contrast.
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.
Disabling zooming is problematic for users with low vision who rely on screen magnification to properly see the contents of a web page. Learn more about the viewport meta tag.
Navigation
These are opportunities to improve keyboard navigation in your application.
Heading elements are not in a sequentially-descending order
Properly ordered headings that do not skip levels convey the semantic structure of the page, making it easier to navigate and understand when using assistive technologies. Learn more about heading order.
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