13.5 sec in total
436 ms
13 sec
105 ms
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Visit heavens-above.comWe analyzed Heavens-above.com page load time and found that the first response time was 436 ms and then it took 13.1 sec to load all DOM resources and completely render a web page. This is a poor result, as 90% of websites can load faster.
heavens-above.com performance score
name
value
score
weighting
Value3.0 s
49/100
10%
Value3.1 s
75/100
25%
Value5.6 s
53/100
10%
Value990 ms
28/100
30%
Value0.098
90/100
15%
Value9.7 s
28/100
10%
436 ms
203 ms
3 ms
302 ms
78 ms
Our browser made a total of 39 requests to load all elements on the main page. We found that 13% of them (5 requests) were addressed to the original Heavens-above.com, 21% (8 requests) were made to Pagead2.googlesyndication.com and 10% (4 requests) were made to Www2.heavens-above.com. The less responsive or slowest element that took the longest time to load (11.3 sec) relates to the external source Www2.heavens-above.com.
Page size can be reduced by 63.0 kB (23%)
270.3 kB
207.3 kB
In fact, the total size of Heavens-above.com main page is 270.3 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. 35% of websites need less resources to load. Images take 115.4 kB which makes up the majority of the site volume.
Potential reduce by 17.0 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. This page needs HTML code to be minified as it can gain 3.8 kB, which is 17% 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 17.0 kB or 77% of the original size.
Potential reduce by 10.0 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. Heavens Above images are well optimized though.
Potential reduce by 18.1 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 18.1 kB or 17% of the original size.
Potential reduce by 17.8 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. Heavens-above.com needs all CSS files to be minified and compressed as it can save up to 17.8 kB or 65% of the original size.
Number of requests can be reduced by 15 (41%)
37
22
The browser has sent 37 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Heavens Above. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 16 to 1 for JavaScripts and as a result speed up the page load time.
heavens-above.com
436 ms
ha.css
203 ms
jquery-1.12.0.min.js
3 ms
standard.min.js
302 ms
show_ads.js
78 ms
adsbygoogle.js
38 ms
plusone.js
115 ms
LogoNew.png
11346 ms
AndroidApp.png
388 ms
orbitdisplay.aspx
11348 ms
btn_donate_SM.gif
11332 ms
dlrhost.gif
11332 ms
zrt_lookup.html
247 ms
show_ads_impl.js
146 ms
cb=gapi.loaded_0
14 ms
ads
11144 ms
osd.js
11129 ms
11115 ms
ca-pub-5668297076217155.js
11122 ms
ads
11100 ms
ads
175 ms
GetUTC.ashx
145 ms
266 ms
55 ms
clk
57 ms
ca
37 ms
1-15-15_AMCI_Test_728x90_T1.jpg
37 ms
lidar.js
6 ms
sbhK2lTE.js
32 ms
cTrvNaRi.html
8 ms
E4WYPs_lNJIuXrWpTsOcc3FIG36RfI0ERc0srw5QW9Y.js
4 ms
activeview
13 ms
button.css
726 ms
button.js
616 ms
cap
16 ms
ca
15 ms
ca
8 ms
get
4 ms
get
6 ms
heavens-above.com accessibility score
ARIA
These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.
Impact
Issue
[aria-*] attributes do not match their roles
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
<frame> or <iframe> elements do not have a title
Links do not have a discernible name
heavens-above.com best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Includes front-end JavaScript libraries with known security vulnerabilities
Ensure CSP is effective against XSS attacks
User Experience
Impact
Issue
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
heavens-above.com SEO score
EN
EN
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Heavens-above.com 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 Heavens-above.com 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.
heavens-above.com
Open Graph description is not detected on the main page of Heavens Above. 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: