Dnbbm.com Site Title
北京蒂娜模具制造有限公司|市政彩色便道砖模盒模具|地面砖模盒模|花池砖模盒模具
Dnbbm.com Meta Description
北京蒂娜模具制造有限公司成立于2015年07月23日，注册地位于北京市海淀区彰化路138号院1号楼5层542，法定代表人为卢章。经营范围包括一般项目：技术服务、技术开发、技术咨询、技术交流、技术转让、技术推广；广告设计、代理；软件开发；企业管理咨询；专业设计服务；数据处理和存储支持服务；计算机系统服务；企业形象策划；会议及展览服务；汽车零配件批发；化工产品销售（不含许可类化工产品）；建筑材料销售；机械设备销售；五金产品批发；针纺织品销售；鞋帽批发；服装服饰批发；工艺美术品及收藏品零售（象牙及其制品除外）；日用品批发；体育用品及器材批发；计算机软硬件及辅助设备零售；文化用品设备出租；办公用品销售；电子产品销售；翻译服务；组织文化艺术交流活动；咨询策划服务；模具销售；人工智能基础软件开发；游览景区管理；旅游开发项目策划咨询；摄影扩印服务；停车场服务；露营地服务；食品销售（仅销售预包装食品）；餐饮管理；非公路休闲车及零配件销售；体育赛事策划；组织体育表演活动；户外用品销售。（除依法须经批准的项目外，凭营业执照依法自主开展经营活动）许可项目：互联网信息服务；网络预约出租汽车经营服务；食品互联网销售。（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，具体经营项目以相关部门批准文件或许可证件为准）（不得从事国家和本市产业政策禁止和限制类项目的经营活动。）
Dnbbm.com Test Results
Dnbbm.com Mobile Performance: 88/100
Quick overview:
Metrics
Collects all available metrics.
Final Screenshot
The last screenshot captured of the pageload.
443196671424
Network Requests
Lists the network requests that were made during page load.
Network Round Trip Times
0 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.
Server Backend Latencies
440 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.
Script Treemap Data
Used for treemap app
Diagnostics
Collection of useful page vitals.
Tasks
Lists the toplevel main thread tasks that executed during page load.
Dnbbm.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
97% 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.
Dnbbm.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
Dnbbm.com Mobile PWA: 38/100
Quick overview:
PWA Optimized
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
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.
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.
Dnbbm.com Mobile Accessibility: 81/100
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.
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.
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.
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.
Document has a main landmark.
One main landmark helps screen reader users navigate a web page. Learn more about landmarks.
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.
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