Report Summary

  • 37

    Performance

    Renders faster than
    56% of other websites

  • 62

    Accessibility

    Visual factors better than
    that of 28% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 75

    SEO

    Google-friendlier than
    32% of websites

iahr.org

IAHR

Page Load Speed

8.8 sec in total

First Response

457 ms

Resources Loaded

7.7 sec

Page Rendered

639 ms

iahr.org screenshot

About Website

Visit iahr.org now to see the best up-to-date IAHR content for Germany and also check out these interesting facts you probably never knew about iahr.org

The International Association for Hydro-Environment Engineering and Research (IAHR), founded in 1935, is a worldwide independent organisation of engineers and water specialists working in fields relat...

Visit iahr.org

Key Findings

We analyzed Iahr.org page load time and found that the first response time was 457 ms and then it took 8.3 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

iahr.org performance score

37

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value6.3 s

3/100

10%

LCP (Largest Contentful Paint)

Value15.1 s

0/100

25%

SI (Speed Index)

Value12.9 s

2/100

10%

TBT (Total Blocking Time)

Value300 ms

79/100

30%

CLS (Cumulative Layout Shift)

Value0.107

88/100

15%

TTI (Time to Interactive)

Value33.4 s

0/100

10%

Network Requests Diagram

iahr.org

457 ms

iahr.org

882 ms

www.iahr.org

451 ms

www.iahr.org

1122 ms

common.css

890 ms

Our browser made a total of 100 requests to load all elements on the main page. We found that 4% of them (4 requests) were addressed to the original Iahr.org, 60% (60 requests) were made to Iahr.oss-accelerate.aliyuncs.com and 27% (27 requests) were made to Events.iahr.org. The less responsive or slowest element that took the longest time to load (2.8 sec) relates to the external source Iahr.oss-accelerate.aliyuncs.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 550.4 kB (7%)

Content Size

7.7 MB

After Optimization

7.2 MB

In fact, the total size of Iahr.org main page is 7.7 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. 35% of websites need less resources to load. Images take 7.5 MB which makes up the majority of the site volume.

HTML Optimization

-89%

Potential reduce by 90.1 kB

  • Original 101.5 kB
  • After minification 70.9 kB
  • After compression 11.4 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 30.6 kB, which is 30% 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 90.1 kB or 89% of the original size.

Image Optimization

-6%

Potential reduce by 445.0 kB

  • Original 7.5 MB
  • After minification 7.1 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. IAHR images are well optimized though.

JavaScript Optimization

-17%

Potential reduce by 11.0 kB

  • Original 66.5 kB
  • After minification 66.5 kB
  • After compression 55.5 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 11.0 kB or 17% of the original size.

CSS Optimization

-28%

Potential reduce by 4.3 kB

  • Original 15.4 kB
  • After minification 15.4 kB
  • After compression 11.1 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. Iahr.org needs all CSS files to be minified and compressed as it can save up to 4.3 kB or 28% of the original size.

Requests Breakdown

Number of requests can be reduced by 16 (18%)

Requests Now

90

After Optimization

74

The browser has sent 90 CSS, Javascripts, AJAX and image requests in order to completely render the main page of IAHR. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 13 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

iahr.org accessibility score

62

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.

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

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

iahr.org best practices score

83

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

SEO Factors

iahr.org SEO score

75

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

High

Image elements do not have [alt] attributes

Crawling and Indexing

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

Impact

Issue

High

Links are not crawlable

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

High

Tap targets are not sized appropriately

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 Iahr.org 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 Iahr.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

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