6 sec in total
2.9 sec
2.9 sec
93 ms
Click here to check amazing Pdfzj content for China. Otherwise, check out these important facts you probably never knew about pdfzj.cn
PDF之家是一个免费PDF在线阅读与下载的网络书店!
Visit pdfzj.cnWe analyzed Pdfzj.cn page load time and found that the first response time was 2.9 sec and then it took 3 sec to load all DOM resources and completely render a web page. This is a poor result, as 55% of websites can load faster.
pdfzj.cn performance score
name
value
score
weighting
Value3.6 s
33/100
10%
Value17.7 s
0/100
25%
Value11.8 s
4/100
10%
Value20 ms
100/100
30%
Value0.007
100/100
15%
Value4.2 s
86/100
10%
2927 ms
Our browser made a total of 1 request to load all elements on the main page. We found that all of those requests were addressed to Pdfzj.cn and no external sources were called. The less responsive or slowest element that took the longest time to load (2.9 sec) belongs to the original domain Pdfzj.cn.
Page size can be reduced by 92 B (30%)
306 B
214 B
In fact, the total size of Pdfzj.cn main page is 306 B. This result falls within the top 5000 of lightweight and thus fast loading web pages. Only a small number of websites need less resources to load. HTML takes 306 B which makes up the majority of the site volume.
Potential reduce by 92 B
HTML content can be minified and compressed by a website’s server. The most efficient way is to compress content using GZIP which reduces data amount travelling through the network between server and browser. HTML code on this page is well minified. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 92 B or 30% of the original size.
We found no issues to fix!
0
0
Besides the initial HTML request, no CSS, Javascripts, AJAX or image files were requested in the course of web page rendering.
pdfzj.cn
2927 ms
pdfzj.cn accessibility score
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
Background and foreground colors do not have a sufficient contrast ratio.
Tables and lists
These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.
Impact
Issue
<dl>'s do not contain only properly-ordered <dt> and <dd> groups, <script>, <template> or <div> elements.
Internationalization and localization
These are opportunities to improve the interpretation of your content by users in different locales.
Impact
Issue
<html> element does not have a [lang] attribute
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.
Impact
Issue
Image elements do not have [alt] attributes
Links do not have a discernible name
pdfzj.cn best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Includes front-end JavaScript libraries with known security vulnerabilities
Ensure CSP is effective against XSS attacks
User Experience
Impact
Issue
Displays images with incorrect aspect ratio
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
Browser errors were logged to the console
pdfzj.cn SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Links are not crawlable
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Impact
Issue
Image elements do not have [alt] attributes
ZH
EN
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Pdfzj.cn can be misinterpreted by Google and other search engines. Our service has detected that Chinese is used on the page, and it does not match the claimed English language. Our system also found out that Pdfzj.cn main page’s claimed encoding is utf-8. Use of this encoding format is the best practice as the main page visitors from all over the world won’t have any issues with symbol transcription.
pdfzj.cn
Open Graph description is not detected on the main page of Pdfzj. Lack of Open Graph description can be counter-productive for their social media presence, as such a description allows converting a website homepage (or other pages) into good-looking, rich and well-structured posts, when it is being shared on Facebook and other social media. For example, adding the following code snippet into HTML <head> tag will help to represent this web page correctly in social networks: