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sky-sailor.ethz.ch: Sky-Sailor: Solar Autonomous Airplane for Mars exploration

Page load speed analysis

  • 56/100

    Normal result
  • 6

    Successful tests
  • 2

    Failed tests
  • First response

    614 ms

  • Resources loaded

    1.5 sec

  • Page rendered

    163 ms

  • Total page load time

    2.2 sec

Click here to check amazing Sky Sailor Ethz content for Switzerland. Otherwise, check out these important facts you probably never knew about sky-sailor.ethz.ch

We analyzed Sky-sailor.ethz.ch page load time and found that the first response time was 614 ms and then it took 1.6 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 25% of websites can load faster.

Page optimization

  • HTML 604 B
    Images 95.2 kB
    Javascripts 0 B
    CSS 474 B

    In fact, the total size of Sky-sailor.ethz.ch main page is 96.3 kB. This result falls within a vast category (top 1 000 000) of heavyweight, probably not optimized, and thus slow loading web pages. Only 10% of websites need less resources to load. Images take 95.2 kB which makes up the majority of the site volume.

    • Original 604 B
    • After minification 601 B
    • After compression 274 B

    HTML optimization

    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 330 B or 55% of the original size.

    • Original 95.2 kB
    • After optimization 86.6 kB

    Image optimization

    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. Sky Sailor Ethz images are well optimized though.

    • Original 474 B
    • After minification 403 B
    • After compression 181 B

    CSS optimization

    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. Sky-sailor.ethz.ch needs all CSS files to be minified and compressed as it can save up to 293 B or 62% of the original size.

Network requests diagram

  • sky-sailor.ethz.ch
  • title.htm
  • main.htm
  • earth.jpg
  • sky-sailor.jpg
  • mars.jpg
  • epfl.jpg
  • airplane.jpg
  • menu.htm
  • home.htm
  • empty.jpg
  • project.jpg
  • sky-sailor1.jpg
  • navigation.jpg
  • mission.jpg
  • media.jpg
  • links.jpg
  • ends.jpg
  • style.css
  • cover1.jpg
  • intro.jpg
  • lac.jpg
  • logo_swissnex-sm.jpg

Our browser made a total of 23 requests to load all elements on the main page. We found that all of those requests were addressed to Sky-sailor.ethz.ch and no external sources were called. The less responsive or slowest element that took the longest time to load (614 ms) belongs to the original domain Sky-sailor.ethz.ch.

Additional info on sky-sailor.ethz.ch

Requests

The browser has sent 22 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Sky Sailor Ethz. According to our analytics all requests are already optimized.

17

Images

1

CSS

4

AJAX

22

All

Possible request optimization

17

Images

1

CSS

4

AJAX

0

Optimized

22

All

Good result

IP address

This IP address is dedicated to Sky-sailor.ethz.ch. This is the best domain hosting practice .

Normal result

IP Trace

sky-sailor.ethz.ch

129.132.38.186

DNS records

Type Host Target/ip TTL Other
A

robotics.ethz.ch

129.132.38.186 3600
CNAME

sky-sailor.ethz.ch

robotics.ethz.ch 300

Language and encoding

Poor result

Language

EN en language flag

Detected

N/A  language flag

Claimed

Encoding

N/A

Claimed

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Sky-sailor.ethz.ch can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Sky-sailor.ethz.ch main page’s claimed encoding is . Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

HTTPS certificate

SSL Certificate

Sky-sailor.ethz.ch has no SSL certificate. Web browsing can be safer with HTTPS connection, so we suggest that it should be obtained for this site.

Normal result

Visitor World Map

Country of origin for 34.2% of all visits is Switzerland. It’s good for Sky-sailor.ethz.ch that their server is also located in Switzerland, as that enables the majority of their visitors to benefit from a much faster page load time.

Good result

Poor result

Social Sharing Optimization

Open Graph description is not detected on the main page of Sky Sailor Ethz. 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:

sky-sailor.ethz.ch

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