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diestel-graph-theory.com screenshot

Report Summary

  • 97

    Performance

    Renders faster than
    95% of other websites

  • 83

    Accessibility

    Visual factors better than
    that of 56% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    19% of websites

  • 58

    SEO

    Google-friendlier than
    20% of websites

diestel-graph-theory.com

Graph Theory

Page Load Speed

1 sec in total

First Response

324 ms

Resources Loaded

547 ms

Page Rendered

173 ms

diestel-graph-theory.com screenshot

About Website

Welcome to diestel-graph-theory.com homepage info - get ready to check Diestel Graph Theory best content for United States right away, or after learning these important things about diestel-graph-theory.com

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Key Findings

We analyzed Diestel-graph-theory.com page load time and found that the first response time was 324 ms and then it took 720 ms to load all DOM resources and completely render a web page. This is quite a good result, as only 10% of websites can load faster.

Performance Metrics

diestel-graph-theory.com performance score

97

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.1 s

80/100

10%

LCP (Largest Contentful Paint)

Value2.1 s

95/100

25%

SI (Speed Index)

Value2.2 s

99/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value2.1 s

99/100

10%

Network Requests Diagram

diestel-graph-theory.com

324 ms

front.jpg

210 ms

china.gif

197 ms

germany.gif

195 ms

pixel.gif

107 ms

Our browser made a total of 8 requests to load all elements on the main page. We found that 75% of them (6 requests) were addressed to the original Diestel-graph-theory.com, 13% (1 request) were made to Paypalobjects.com and 13% (1 request) were made to Wms-na.amazon-adsystem.com. The less responsive or slowest element that took the longest time to load (324 ms) belongs to the original domain Diestel-graph-theory.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 28.8 kB (32%)

Content Size

90.1 kB

After Optimization

61.4 kB

  • HTML
  • Images
  • JavaScript

In fact, the total size of Diestel-graph-theory.com main page is 90.1 kB. This result falls within a vast category (top 1 000 000) of heavyweight, probably not optimized, and thus slow loading web pages. Only a small number of websites need less resources to load. Images take 78.1 kB which makes up the majority of the site volume.

HTML Optimization

-72%

Potential reduce by 8.6 kB

  • Original 12.0 kB
  • After minification 9.3 kB
  • After compression 3.3 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. This page needs HTML code to be minified as it can gain 2.6 kB, which is 22% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 8.6 kB or 72% of the original size.

Image Optimization

-26%

Potential reduce by 20.1 kB

  • Original 78.1 kB
  • After minification 58.0 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, Diestel Graph Theory needs image optimization as it can save up to 20.1 kB or 26% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-0%

Potential reduce by 0 B

  • Original 42 B

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.

Requests Breakdown

We found no issues to fix!

Requests Now

7

After Optimization

7

  • Images
  • JavaScript

The browser has sent 7 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Diestel Graph Theory. According to our analytics all requests are already optimized.

Network Requests Diagram

diestel-graph-theory.com

diestel-graph-theory.com

324 ms

front.jpg

front.jpg

210 ms

china.gif

china.gif

197 ms

germany.gif

germany.gif

195 ms

pixel.gif

pixel.gif

107 ms

link-enhancer-common.js

link-enhancer-common.js

38 ms

japan.gif

japan.gif

194 ms

russia.gif

russia.gif

205 ms

Accessibility Review

diestel-graph-theory.com accessibility score

83

Accessibility Issues

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

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

Links do not have a discernible name

Best Practices

diestel-graph-theory.com best practices score

58

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

Displays images with incorrect aspect ratio

General

Impact

Issue

High

Browser errors were logged to the console

High

Issues were logged in the Issues panel in Chrome Devtools

SEO Factors

diestel-graph-theory.com SEO score

58

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

Links do not have descriptive text

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    N/A

  • Encoding

    WINDOWS-1252

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Diestel-graph-theory.com 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 Diestel-graph-theory.com main page’s claimed encoding is windows-1252. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

Social Sharing Optimization

diestel-graph-theory.com

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