Access petroren.com. 石油人-专业的石油行业网站，传播前沿行业资讯！

name

value

score

weighting

FCP (First Contentful Paint)

Value3.6 s

32/100

10%

LCP (Largest Contentful Paint)

Value4.1 s

46/100

25%

SI (Speed Index)

Value8.9 s

15/100

10%

TBT (Total Blocking Time)

Value1,350 ms

17/100

30%

CLS (Cumulative Layout Shift)

Value0.146

77/100

15%

TTI (Time to Interactive)

Value5.1 s

75/100

10%

petroren.com

696 ms

1132 ms

hm.js

1019 ms

style_2_common.css

1550 ms

style_2_forum_index.css

857 ms

Our browser made a total of 59 requests to load all elements on the main page. We found that 22% of them (13 requests) were addressed to the original Petroren.com, 25% (15 requests) were made to Static.petroren.com and 14% (8 requests) were made to Cpro.baidustatic.com. The less responsive or slowest element that took the longest time to load (7.8 sec) relates to the external source Static.petroren.com.

Content Size

765.0 kB

After Optimization

437.4 kB

In fact, the total size of Petroren.com main page is 765.0 kB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 45% of websites need less resources to load. Javascripts take 341.2 kB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 54.3 kB

Original 67.3 kB
After minification 67.3 kB
After compression 13.0 kB

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 54.3 kB or 81% of the original size.

Image Optimization

-12%

Potential reduce by 34.8 kB

Original 279.5 kB
After minification 244.7 kB

Image size optimization can help to speed up a website loading time. The chart above shows the difference between the size before and after optimization. Obviously, Petroren needs image optimization as it can save up to 34.8 kB or 12% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-52%

Potential reduce by 178.7 kB

Original 341.2 kB
After minification 340.9 kB
After compression 162.5 kB

It’s better to minify JavaScript in order to improve website performance. The diagram shows the current total size of all JavaScript files against the prospective JavaScript size after its minification and compression. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 178.7 kB or 52% of the original size.

CSS Optimization

-78%

Potential reduce by 59.8 kB

Original 76.9 kB
After minification 75.5 kB
After compression 17.2 kB

CSS files minification is very important to reduce a web page rendering time. The faster CSS files can load, the earlier a page can be rendered. Petroren.com needs all CSS files to be minified and compressed as it can save up to 59.8 kB or 78% of the original size.

Requests Now

After Optimization

The browser has sent 57 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Petroren. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 17 to 1 for JavaScripts and as a result speed up the page load time.

Accessibility Issues

These are opportunities to improve the legibility of your content.

High

Background and foreground colors do not have a sufficient contrast ratio.

These are opportunities to improve the interpretation of your content by users in different locales.

High

<html> element does not have a [lang] attribute

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.

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

These items highlight common accessibility best practices.

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Areas of Improvement

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

Search Engine Optimization Advices

Format your HTML in a way that enables crawlers to better understand your app’s content.

High

Image elements do not have [alt] attributes

Make sure your pages are mobile friendly so users don’t have to pinch or zoom in order to read the content pages. [Learn more](https://developers.google.com/search/mobile-sites/).

High

Document uses legible font sizes

Language and Encoding

Language Detected

ZH
Language Claimed

N/A
Encoding

UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Petroren.com can be misinterpreted by Google and other search engines. Our service has detected that Chinese is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Petroren.com 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.

Social Sharing Optimization

petroren.com

Open Graph description is not detected on the main page of Petroren. 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:

Report Summary

Performance

Accessibility

Best Practices

SEO

石油人-专业的石油行业网站，传播前沿行业资讯！

Page Load Speed

First Response

Resources Loaded

Page Rendered

About Website

Key Findings

Performance Metrics

Measured Metrics

FCP (First Contentful Paint)

LCP (Largest Contentful Paint)

SI (Speed Index)

TBT (Total Blocking Time)

CLS (Cumulative Layout Shift)

TTI (Time to Interactive)

Network Requests Diagram

petroren.com

hm.js

style_2_common.css

style_2_forum_index.css

Page Optimization Overview & Recommendations

Content Size

After Optimization

HTML Optimization

Image Optimization

JavaScript Optimization

CSS Optimization

Requests Breakdown

Requests Now

After Optimization

Network Requests Diagram

petroren.com

hm.js

style_2_common.css

style_2_forum_index.css

style.css

common.js

forum.js

logging.js

md5.js

c.js

adsbygoogle.js

discuz_tips.js

hm.gif

s.js

bgimg.jpg

071909aq2nncxxaq424g8i.png

090050zo8k8rh29bialz5a.png

090132ilfiyfhf3lfz3zkf.jpg

072018wsw3u6ar3npananw.png

225058l2s282p8070hwdsu.gif

petroren.png

collapsed_no.gif

forum.gif

forum_new.gif

site_qq.jpg

ad_close.gif

security.png

px.png

pn.png

qmenu.png

nv.png

nv_a.png

ecom

search.png

search.png

titlebg.png

pt_item.png

chart.png

ca-pub-0164483346529141.js

zrt_lookup.html

show_ads_impl.js

scrolltop.png

ads

osd.js