Access iapws.org. International Association for the Properties of Water and Steam

name

value

score

weighting

FCP (First Contentful Paint)

Value1.8 s

90/100

10%

LCP (Largest Contentful Paint)

Value1.8 s

99/100

25%

SI (Speed Index)

Value1.8 s

100/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value1.8 s

100/100

10%

iapws.org

72 ms

iapws.css

16 ms

jquery.min.js

121 ms

analytics.js

39 ms

logo2.png

9 ms

Our browser made a total of 6 requests to load all elements on the main page. We found that 67% of them (4 requests) were addressed to the original Iapws.org, 17% (1 request) were made to Ajax.googleapis.com and 17% (1 request) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (121 ms) relates to the external source Ajax.googleapis.com.

Content Size

93.0 kB

After Optimization

55.8 kB

In fact, the total size of Iapws.org main page is 93.0 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 83.2 kB which makes up the majority of the site volume.

HTML Optimization

-58%

Potential reduce by 4.2 kB

Original 7.2 kB
After minification 7.1 kB
After compression 3.0 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 4.2 kB or 58% of the original size.

Image Optimization

-45%

Potential reduce by 995 B

Original 2.2 kB
After minification 1.2 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, Iapws needs image optimization as it can save up to 995 B or 45% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-38%

Potential reduce by 32.0 kB

Original 83.2 kB
After minification 83.2 kB
After compression 51.2 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 32.0 kB or 38% of the original size.

CSS Optimization

-16%

Potential reduce by 59 B

Original 376 B
After minification 376 B
After compression 317 B

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. Iapws.org needs all CSS files to be minified and compressed as it can save up to 59 B or 16% of the original size.

Requests Now

After Optimization

The browser has sent 5 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Iapws. According to our analytics all requests are already optimized.