Access hubblesite.org. Hubble Home

hubblesite.org

16 ms

hubblesite.org

27 ms

video-js.min.css

80 ms

hubble-override-81c2d76b2f.css

20 ms

app-41604b7b61d688797b12.js

75 ms

Our browser made a total of 90 requests to load all elements on the main page. We found that 91% of them (82 requests) were addressed to the original Hubblesite.org, 2% (2 requests) were made to Vjs.zencdn.net and 2% (2 requests) were made to Googletagmanager.com. The less responsive or slowest element that took the longest time to load (703 ms) belongs to the original domain Hubblesite.org.

Content Size

7.1 MB

After Optimization

6.1 MB

In fact, the total size of Hubblesite.org main page is 7.1 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. Only a small number of websites need less resources to load. Images take 5.6 MB which makes up the majority of the site volume.

HTML Optimization

-71%

Potential reduce by 321.8 kB

Original 450.6 kB
After minification 443.3 kB
After compression 128.7 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 321.8 kB or 71% of the original size.

Image Optimization

-4%

Potential reduce by 240.6 kB

Original 5.6 MB
After minification 5.4 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. Hubble Site images are well optimized though.

JavaScript Optimization

-45%

Potential reduce by 422.4 kB

Original 932.9 kB
After minification 932.9 kB
After compression 510.5 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 422.4 kB or 45% of the original size.

CSS Optimization

-1%

Potential reduce by 1.1 kB

Original 114.0 kB
After minification 114.0 kB
After compression 112.9 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. Hubblesite.org has all CSS files already compressed.

Requests Now

After Optimization

The browser has sent 67 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Hubble Site. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 14 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.