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physicsoverflow.org screenshot

Report Summary

  • 78

    Performance

    Renders faster than
    85% of other websites

  • 49

    Accessibility

    Visual factors better than
    that of 20% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 80

    SEO

    Google-friendlier than
    42% of websites

physicsoverflow.org

Recent activities (of the last week ) | PhysicsOverflow

Page Load Speed

1.9 sec in total

First Response

331 ms

Resources Loaded

1.4 sec

Page Rendered

140 ms

physicsoverflow.org screenshot

About Website

Click here to check amazing Physics Overflow content for India. Otherwise, check out these important facts you probably never knew about physicsoverflow.org

A site including a section devoted to open paper refereeing and a forum for advanced physics, from graduate-level and beyond, including Theoretical Physics, Phenomenology, and Experimental Physics, an...

Visit physicsoverflow.org

Key Findings

We analyzed Physicsoverflow.org page load time and found that the first response time was 331 ms and then it took 1.5 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 30% of websites can load faster.

Performance Metrics

physicsoverflow.org performance score

78

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.5 s

34/100

10%

LCP (Largest Contentful Paint)

Value3.8 s

56/100

25%

SI (Speed Index)

Value3.7 s

86/100

10%

TBT (Total Blocking Time)

Value20 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.002

100/100

15%

TTI (Time to Interactive)

Value5.6 s

69/100

10%

Network Requests Diagram

physicsoverflow.org

331 ms

qa-styles.css

318 ms

treeview.css

208 ms

jquery-1.9.1.min.js

11 ms

MathJax.js

415 ms

Our browser made a total of 33 requests to load all elements on the main page. We found that 55% of them (18 requests) were addressed to the original Physicsoverflow.org, 18% (6 requests) were made to Fonts.gstatic.com and 6% (2 requests) were made to W3counter.com. The less responsive or slowest element that took the longest time to load (549 ms) belongs to the original domain Physicsoverflow.org.

Page Optimization Overview & Recommendations

Page size can be reduced by 445.4 kB (71%)

Content Size

623.6 kB

After Optimization

178.2 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Physicsoverflow.org main page is 623.6 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. 40% of websites need less resources to load. Javascripts take 464.6 kB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 62.1 kB

  • Original 77.1 kB
  • After minification 69.9 kB
  • After compression 15.0 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 62.1 kB or 81% of the original size.

Image Optimization

-16%

Potential reduce by 908 B

  • Original 5.5 kB
  • After minification 4.6 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, Physics Overflow needs image optimization as it can save up to 908 B or 16% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-68%

Potential reduce by 316.9 kB

  • Original 464.6 kB
  • After minification 461.0 kB
  • After compression 147.7 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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 316.9 kB or 68% of the original size.

CSS Optimization

-86%

Potential reduce by 65.5 kB

  • Original 76.5 kB
  • After minification 59.8 kB
  • After compression 10.9 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. Physicsoverflow.org needs all CSS files to be minified and compressed as it can save up to 65.5 kB or 86% of the original size.

Requests Breakdown

Number of requests can be reduced by 11 (48%)

Requests Now

23

After Optimization

12

  • Images
  • JavaScript
  • CSS

The browser has sent 23 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Physics Overflow. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 12 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

physicsoverflow.org

physicsoverflow.org

331 ms

qa-styles.css

qa-styles.css

318 ms

treeview.css

treeview.css

208 ms

jquery-1.9.1.min.js

jquery-1.9.1.min.js

11 ms

MathJax.js

MathJax.js

415 ms

jquery-1.7.2.min.js

jquery-1.7.2.min.js

421 ms

qa-page.js

qa-page.js

213 ms

treeview.js

treeview.js

213 ms

po-phd-150803.js

po-phd-150803.js

311 ms

jquery.cookie.js

jquery.cookie.js

330 ms

brand

brand

20 ms

css

css

20 ms

tracker.js

tracker.js

100 ms

brandjs.js

brandjs.js

16 ms

quant.js

quant.js

8 ms

TeX-AMS-MML_HTMLorMML.js

TeX-AMS-MML_HTMLorMML.js

325 ms

Physics_Overflow_Logo.svg

Physics_Overflow_Logo.svg

549 ms

Physics_Overflow_Logo.svg

Physics_Overflow_Logo.svg

206 ms

expander.gif

expander.gif

111 ms

rss.jpg

rss.jpg

111 ms

search.png

search.png

107 ms

tracker.php

tracker.php

107 ms

KFOmCnqEu92Fr1Mu4mxP.ttf

KFOmCnqEu92Fr1Mu4mxP.ttf

37 ms

KFOlCnqEu92Fr1MmEU9fBBc9.ttf

KFOlCnqEu92Fr1MmEU9fBBc9.ttf

36 ms

KFOlCnqEu92Fr1MmSU5fBBc9.ttf

KFOlCnqEu92Fr1MmSU5fBBc9.ttf

38 ms

KFOkCnqEu92Fr1Mu51xIIzc.ttf

KFOkCnqEu92Fr1Mu51xIIzc.ttf

38 ms

KFOjCnqEu92Fr1Mu51S7ACc6CsE.ttf

KFOjCnqEu92Fr1Mu51S7ACc6CsE.ttf

38 ms

KFOjCnqEu92Fr1Mu51TjASc6CsE.ttf

KFOjCnqEu92Fr1Mu51TjASc6CsE.ttf

38 ms

feed-icon-14x14.png

feed-icon-14x14.png

105 ms

spinner-icon-14x14.gif

spinner-icon-14x14.gif

133 ms

jax.js

jax.js

109 ms

1Cqey.png

1Cqey.png

56 ms

1Cqey.png

1Cqey.png

40 ms

Accessibility Review

physicsoverflow.org accessibility score

49

Accessibility Issues

Contrast

These are opportunities to improve the legibility of your content.

Impact

Issue

High

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

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

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

High

List items (<li>) are not contained within <ul> or <ol> parent elements.

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

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

Best Practices

physicsoverflow.org best practices score

67

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

physicsoverflow.org SEO score

80

Search Engine Optimization Advices

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 doesn't use legible font sizes

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Physicsoverflow.org can be misinterpreted by Google and other search engines. Our service has detected that English 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 Physicsoverflow.org 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

physicsoverflow.org

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