Ledjgc.com Site Title
led显示屏/广告屏-led单元板-全彩Led显示屏-深圳市布兰登光电科技
Ledjgc.com Meta Description
布兰登光电科技有限公司产品有户外led显示屏,led广告屏,全彩Led显示屏,led单元板等公司经过多年发展，赢得了众多国内外客户的认可及支持！
Ledjgc.com Test Results
Ledjgc.com Desktop Performance: 75/100
Quick overview:
First Meaningful Paint
1.0 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
Final Screenshot
The last screenshot captured of the pageload.
915124743546
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.
Network Requests
Lists the network requests that were made during page load.
Tasks
Lists the toplevel main thread tasks that executed during page load.
Diagnostics
Collection of useful page vitals.
Server Backend Latencies
0 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.
Ledjgc.com Desktop SEO: 73/100
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.
Does not have a `<meta name="viewport">` tag with `width` or `initial-scale`
A `<meta name="viewport">` not only optimizes your app for mobile screen sizes, but also prevents a 300 millisecond delay to user input. Learn more about using the viewport meta tag. No `<meta name="viewport">` tag found
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Links are not crawlable
Search engines may use `href` attributes on links to crawl websites. Ensure that the `href` attribute of anchor elements links to an appropriate destination, so more pages of the site can be discovered. Learn how to make links crawlable
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Image elements do not have `[alt]` attributes
Informative elements should aim for short, descriptive alternate text. Decorative elements can be ignored with an empty alt attribute. Learn more about the `alt` attribute.
Ledjgc.com Desktop Best Practices: 67/100
Quick overview:
General
Browser errors were logged to the console
Errors logged to the console indicate unresolved problems. They can come from network request failures and other browser concerns. Learn more about this errors in console diagnostic audit
Detected JavaScript libraries
All front-end JavaScript libraries detected on the page. Learn more about this JavaScript library detection diagnostic audit.
User Experience
Displays images with incorrect aspect ratio
Image display dimensions should match natural aspect ratio. Learn more about image aspect ratio.
Trust and Safety
Does not use HTTPS
111 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
Browser Compatibility
Page lacks the HTML doctype, thus triggering quirks-mode
Specifying a doctype prevents the browser from switching to quirks-mode. Learn more about the doctype declaration. Document contains a `doctype` that triggers `limited-quirks-mode`
Ledjgc.com Desktop PWA: 0/100
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
Does not have a `<meta name="viewport">` tag with `width` or `initial-scale`
A `<meta name="viewport">` not only optimizes your app for mobile screen sizes, but also prevents a 300 millisecond delay to user input. Learn more about using the viewport meta tag. No `<meta name="viewport">` 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.
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
Does not register a service worker that controls page and `start_url`
The 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. Learn more about Service Workers.
Ledjgc.com Desktop Accessibility: 40/100
Quick overview:
Tables and lists
These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.
Lists do not contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
Screen readers have a specific way of announcing lists. Ensuring proper list structure aids screen reader output. Learn more about proper list structure.
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
Link text (and alternate text for images, when used as links) that is discernible, unique, and focusable improves the navigation experience for screen reader users. Learn how to make links accessible.
Image elements do not have `[alt]` attributes
Informative elements should aim for short, descriptive alternate text. Decorative elements can be ignored with an empty alt attribute. 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.
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.
Internationalization and localization
These are opportunities to improve the interpretation of your content by users in different locales.
`<html>` element does not have a `[lang]` attribute
If a page doesn't specify a `lang` attribute, a screen reader assumes that the page is in the default language that the user chose when setting up the screen reader. If the page isn't actually in the default language, then the screen reader might not announce the page's text correctly. Learn more about the `lang` attribute.
Similar sites
Similar tests
www.ledjgc.com
www.ledjgc.net
www.ledjgc.org
www.ledjgc.info
www.ledjgc.biz
www.ledjgc.us
www.ledjgc.mobi
www.edjgc.com
www.ledjgc.com
www.pedjgc.com
www.lpedjgc.com
www.pledjgc.com
www.oedjgc.com
www.loedjgc.com
www.oledjgc.com
www.kedjgc.com
www.lkedjgc.com
www.kledjgc.com
www.ldjgc.com
www.lwdjgc.com
www.lewdjgc.com
www.lwedjgc.com
www.lsdjgc.com
www.lesdjgc.com
www.lsedjgc.com
www.lddjgc.com
www.leddjgc.com
www.ldedjgc.com
www.lrdjgc.com
www.lerdjgc.com
www.lredjgc.com
www.lejgc.com
www.lexjgc.com
www.ledxjgc.com
www.lexdjgc.com
www.lesjgc.com
www.ledsjgc.com
www.leejgc.com
www.ledejgc.com
www.leedjgc.com
www.lerjgc.com
www.ledrjgc.com
www.lefjgc.com
www.ledfjgc.com
www.lefdjgc.com
www.lecjgc.com
www.ledcjgc.com
www.lecdjgc.com
www.ledgc.com
www.ledngc.com
www.ledjngc.com
www.lednjgc.com
www.ledhgc.com
www.ledjhgc.com
www.ledhjgc.com
www.ledugc.com
www.ledjugc.com
www.ledujgc.com
www.ledigc.com
www.ledjigc.com
www.ledijgc.com
www.ledkgc.com
www.ledjkgc.com
www.ledkjgc.com
www.ledmgc.com
www.ledjmgc.com
www.ledmjgc.com
www.ledjc.com
www.ledjfc.com
www.ledjgfc.com
www.ledjfgc.com
www.ledjvc.com
www.ledjgvc.com
www.ledjvgc.com
www.ledjtc.com
www.ledjgtc.com
www.ledjtgc.com
www.ledjbc.com
www.ledjgbc.com
www.ledjbgc.com
www.ledjyc.com
www.ledjgyc.com
www.ledjygc.com
www.ledjhc.com
www.ledjghc.com
www.ledjg.com
www.ledjgx.com
www.ledjgcx.com
www.ledjgxc.com
www.ledjgd.com
www.ledjgcd.com
www.ledjgdc.com
www.ledjgf.com
www.ledjgcf.com
www.ledjgv.com
www.ledjgcv.com
www.ledjgc.con
www.ledjgc.net
www.ledjgc.org
www.ledjgc.info
www.ledjgc.biz
www.ledjgc.us
www.ledjgc.mobi
www.edjgc.com
www.ledjgc.com
www.pedjgc.com
www.lpedjgc.com
www.pledjgc.com
www.oedjgc.com
www.loedjgc.com
www.oledjgc.com
www.kedjgc.com
www.lkedjgc.com
www.kledjgc.com
www.ldjgc.com
www.lwdjgc.com
www.lewdjgc.com
www.lwedjgc.com
www.lsdjgc.com
www.lesdjgc.com
www.lsedjgc.com
www.lddjgc.com
www.leddjgc.com
www.ldedjgc.com
www.lrdjgc.com
www.lerdjgc.com
www.lredjgc.com
www.lejgc.com
www.lexjgc.com
www.ledxjgc.com
www.lexdjgc.com
www.lesjgc.com
www.ledsjgc.com
www.leejgc.com
www.ledejgc.com
www.leedjgc.com
www.lerjgc.com
www.ledrjgc.com
www.lefjgc.com
www.ledfjgc.com
www.lefdjgc.com
www.lecjgc.com
www.ledcjgc.com
www.lecdjgc.com
www.ledgc.com
www.ledngc.com
www.ledjngc.com
www.lednjgc.com
www.ledhgc.com
www.ledjhgc.com
www.ledhjgc.com
www.ledugc.com
www.ledjugc.com
www.ledujgc.com
www.ledigc.com
www.ledjigc.com
www.ledijgc.com
www.ledkgc.com
www.ledjkgc.com
www.ledkjgc.com
www.ledmgc.com
www.ledjmgc.com
www.ledmjgc.com
www.ledjc.com
www.ledjfc.com
www.ledjgfc.com
www.ledjfgc.com
www.ledjvc.com
www.ledjgvc.com
www.ledjvgc.com
www.ledjtc.com
www.ledjgtc.com
www.ledjtgc.com
www.ledjbc.com
www.ledjgbc.com
www.ledjbgc.com
www.ledjyc.com
www.ledjgyc.com
www.ledjygc.com
www.ledjhc.com
www.ledjghc.com
www.ledjg.com
www.ledjgx.com
www.ledjgcx.com
www.ledjgxc.com
www.ledjgd.com
www.ledjgcd.com
www.ledjgdc.com
www.ledjgf.com
www.ledjgcf.com
www.ledjgv.com
www.ledjgcv.com
www.ledjgc.con