Report Summary

  • 37

    Performance

    Renders faster than
    57% of other websites

  • 81

    Accessibility

    Visual factors better than
    that of 52% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 85

    SEO

    Google-friendlier than
    56% of websites

gasturb.de

GasTurb - Home

Page Load Speed

3.5 sec in total

First Response

653 ms

Resources Loaded

2.7 sec

Page Rendered

205 ms

gasturb.de screenshot

About Website

Welcome to gasturb.de homepage info - get ready to check Gas Turb best content right away, or after learning these important things about gasturb.de

Professional software for gas turbine performance calculations. Built for engineers, managers, researchers and students alike.

Visit gasturb.de

Key Findings

We analyzed Gasturb.de page load time and found that the first response time was 653 ms and then it took 2.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster.

Performance Metrics

gasturb.de performance score

37

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value7.8 s

0/100

10%

LCP (Largest Contentful Paint)

Value8.5 s

2/100

25%

SI (Speed Index)

Value8.8 s

16/100

10%

TBT (Total Blocking Time)

Value380 ms

70/100

30%

CLS (Cumulative Layout Shift)

Value0.168

71/100

15%

TTI (Time to Interactive)

Value9.6 s

29/100

10%

Network Requests Diagram

gasturb.de

653 ms

reset.css

201 ms

style.css

322 ms

template.css

212 ms

menu.css

209 ms

Our browser made a total of 41 requests to load all elements on the main page. We found that all of those requests were addressed to Gasturb.de and no external sources were called. The less responsive or slowest element that took the longest time to load (985 ms) belongs to the original domain Gasturb.de.

Page Optimization Overview & Recommendations

Page size can be reduced by 191.4 kB (51%)

Content Size

378.8 kB

After Optimization

187.4 kB

In fact, the total size of Gasturb.de main page is 378.8 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. 15% of websites need less resources to load. Javascripts take 170.4 kB which makes up the majority of the site volume.

HTML Optimization

-87%

Potential reduce by 27.8 kB

  • Original 31.9 kB
  • After minification 26.3 kB
  • After compression 4.1 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 5.6 kB, which is 18% 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 27.8 kB or 87% of the original size.

Image Optimization

-15%

Potential reduce by 21.2 kB

  • Original 140.7 kB
  • After minification 119.5 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, Gas Turb needs image optimization as it can save up to 21.2 kB or 15% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-66%

Potential reduce by 113.0 kB

  • Original 170.4 kB
  • After minification 169.2 kB
  • After compression 57.4 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 113.0 kB or 66% of the original size.

CSS Optimization

-82%

Potential reduce by 29.4 kB

  • Original 35.9 kB
  • After minification 30.7 kB
  • After compression 6.5 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. Gasturb.de needs all CSS files to be minified and compressed as it can save up to 29.4 kB or 82% of the original size.

Requests Breakdown

Number of requests can be reduced by 30 (75%)

Requests Now

40

After Optimization

10

The browser has sent 40 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Gas Turb. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 7 to 1 for JavaScripts and from 6 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

gasturb.de accessibility score

81

Accessibility Issues

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

Buttons do not have an accessible name

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

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.

Best Practices

gasturb.de best practices score

75

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

Missing source maps for large first-party JavaScript

SEO Factors

gasturb.de SEO score

85

Search Engine Optimization Advices

Crawling and Indexing

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

Impact

Issue

High

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

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

    EN

  • Language Claimed

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Gasturb.de can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and it matches the claimed language. Our system also found out that Gasturb.de 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 Gas Turb. 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: