Report Summary

  • 44

    Performance

    Renders faster than
    63% of other websites

  • 69

    Accessibility

    Visual factors better than
    that of 35% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 85

    SEO

    Google-friendlier than
    56% of websites

Page Load Speed

8 sec in total

First Response

102 ms

Resources Loaded

7.7 sec

Page Rendered

197 ms

physics-helpline.com screenshot

About Website

Visit physics-helpline.com now to see the best up-to-date Physics Helpline content and also check out these interesting facts you probably never knew about physics-helpline.com

有信心不一定会成功,没信心一定不会成功

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Key Findings

We analyzed Physics-helpline.com page load time and found that the first response time was 102 ms and then it took 7.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 85% of websites can load faster.

Performance Metrics

physics-helpline.com performance score

44

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.6 s

32/100

10%

LCP (Largest Contentful Paint)

Value13.8 s

0/100

25%

SI (Speed Index)

Value8.2 s

20/100

10%

TBT (Total Blocking Time)

Value300 ms

79/100

30%

CLS (Cumulative Layout Shift)

Value0.099

90/100

15%

TTI (Time to Interactive)

Value12.9 s

13/100

10%

Network Requests Diagram

physics-helpline.com

102 ms

www.physics-helpline.com

135 ms

jquery.min.js

62 ms

base.css

106 ms

model.css

141 ms

Our browser made a total of 76 requests to load all elements on the main page. We found that 24% of them (18 requests) were addressed to the original Physics-helpline.com, 43% (33 requests) were made to Fuxuyiqi.com and 20% (15 requests) were made to Test.xinxiyidiantong.com. The less responsive or slowest element that took the longest time to load (6.2 sec) relates to the external source Fuxuyiqi.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 131.1 kB (5%)

Content Size

2.9 MB

After Optimization

2.8 MB

In fact, the total size of Physics-helpline.com main page is 2.9 MB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 55% of websites need less resources to load. Images take 2.7 MB which makes up the majority of the site volume.

HTML Optimization

-75%

Potential reduce by 5.0 kB

  • Original 6.6 kB
  • After minification 6.4 kB
  • After compression 1.6 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 5.0 kB or 75% of the original size.

Image Optimization

-5%

Potential reduce by 124.8 kB

  • Original 2.7 MB
  • After minification 2.6 MB

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. Physics Helpline images are well optimized though.

JavaScript Optimization

-1%

Potential reduce by 1.1 kB

  • Original 171.8 kB
  • After minification 171.8 kB
  • After compression 170.7 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. This website has mostly compressed JavaScripts.

CSS Optimization

-3%

Potential reduce by 224 B

  • Original 7.7 kB
  • After minification 7.7 kB
  • After compression 7.5 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. Physics-helpline.com has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 20 (28%)

Requests Now

72

After Optimization

52

The browser has sent 72 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Physics Helpline. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 15 to 1 for JavaScripts and from 7 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

physics-helpline.com accessibility score

69

Accessibility Issues

Internationalization and localization

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

Impact

Issue

High

<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

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Best Practices

physics-helpline.com best practices score

75

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Missing source maps for large first-party JavaScript

SEO Factors

physics-helpline.com SEO score

85

Search Engine Optimization Advices

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

Page is blocked from indexing

Content Best Practices

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

Impact

Issue

High

Image elements do not have [alt] attributes

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 more](https://developers.google.com/search/mobile-sites/).

Impact

Issue

High

Document uses legible font sizes

Language and Encoding

  • Language Detected

    N/A

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Physics-helpline.com can be misinterpreted by Google and other search engines. Unfortunately we cannot identify language used on the page (probably there is a mix of languages, too little text or something else) and no language is claimed in <html> or <meta> tags either. Our system also found out that Physics-helpline.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

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