Zcybjd.com Site Title

志诚杨贝（广州）文物鉴定评估有限公司

Zcybjd.com Meta Description

志诚杨贝（广州）文物鉴定评估有限公司成立于2018年08月09日，注册地位于广州市天河区汇彩路38号之四801房（仅限办公用途），法定代表人为谢东山。经营范围包括文化传播（不含许可经营项目）;科技信息咨询服务;科技成果鉴定服务;科技项目评估服务;建筑材料检验服务;电子产品设计服务;电子产品零售;五金产品批发;仪器仪表批发;建材、装饰材料批发;工艺品批发（象牙及其制品除外）;金属装饰材料零售;计算机技术开发、技术服务;群众参与的文艺类演出、比赛等公益性文化活动的策划;文化艺术咨询服务;金属结构件设计服务;珠宝首饰设计服务;建筑材料设计、咨询服务;通信工程设计服务;电子工程设计服务;化工产品检测服务;贵金属检测服务;五金零售;电子产品批发;陶瓷、玻璃器皿批发;陶瓷、玻璃器皿零售;陶瓷装饰材料零售;金属制品批发;印刷技术开发;取证鉴定器材的技术研究、技术开发;其他文化娱乐用品批发;灯饰设计服务;家具设计服务;展台设计服务;珠宝玉石检测服务;计算机零配件批发;艺（美）术品、收藏品鉴定、咨询服务;档案咨询、整理、鉴定、寄存、数字化;艺术品鉴定、评估;珠宝鉴定服务;文化研究;非物质文化遗产保护的技术研究、技术咨询;文化推广（不含许可经营项目）;

Zcybjd.com Test Results

Zcybjd.com Mobile Performance: 85/100
Quick overview:
First Meaningful Paint
2.1 s
First Meaningful Paint measures when the primary content of a page is visible. Learn more about the First Meaningful Paint metric.
Metrics
Collects all available metrics.
Network Round Trip Times
20 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.
Script Treemap Data
Used for treemap app
Tasks
Lists the toplevel main thread tasks that executed during page load.
Diagnostics
Collection of useful page vitals.
Final Screenshot
The last screenshot captured of the pageload.

357908699746

Network Requests
Lists the network requests that were made during page load.
Server Backend Latencies
490 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.

Zcybjd.com Mobile SEO: 99/100
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
95% 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.

Zcybjd.com Mobile Best Practices: 77/100
Quick overview:
Trust and Safety
Does not use HTTPS
25 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
Zcybjd.com Mobile PWA: 38/100
Quick overview:
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.
PWA Optimized
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
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.
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.
Zcybjd.com Mobile Accessibility: 78/100
Quick overview:
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 have `[alt]` attributes that are redundant text.
Informative elements should aim for short, descriptive alternative text. Alternative text that is exactly the same as the text adjacent to the link or image is potentially confusing for screen reader users, because the text will be read twice. Learn more about the `alt` attribute.
Navigation
These are opportunities to improve keyboard navigation in your application.
The page contains a heading, skip link, or landmark region
Adding ways to bypass repetitive content lets keyboard users navigate the page more efficiently. Learn more about bypass blocks.
Identical links have the same purpose.
Links with the same destination should have the same description, to help users understand the link's purpose and decide whether to follow it. Learn more about identical links.
Document has a main landmark.
One main landmark helps screen reader users navigate a web page. Learn more about landmarks.
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.
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.
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