Report Summary

  • 0

    Performance

  • 33

    Accessibility

    Visual factors better than
    that of 18% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 64

    SEO

    Google-friendlier than
    24% of websites

sky-sailor.ethz.ch

Sky-Sailor: Solar Autonomous Airplane for Mars exploration

Page Load Speed

2.2 sec in total

First Response

614 ms

Resources Loaded

1.5 sec

Page Rendered

163 ms

sky-sailor.ethz.ch screenshot

About Website

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

Visit sky-sailor.ethz.ch

Key Findings

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 30% of websites can load faster.

Performance Metrics

sky-sailor.ethz.ch performance score

0

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value0

0/100

10%

LCP (Largest Contentful Paint)

Value0

0/100

25%

SI (Speed Index)

Value0

0/100

10%

TBT (Total Blocking Time)

Value0

0/100

30%

CLS (Cumulative Layout Shift)

Value0.078

95/100

15%

TTI (Time to Interactive)

Value0

0/100

10%

Network Requests Diagram

sky-sailor.ethz.ch

614 ms

title.htm

103 ms

main.htm

198 ms

earth.jpg

238 ms

sky-sailor.jpg

196 ms

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.

Page Optimization Overview & Recommendations

Page size can be reduced by 9.3 kB (10%)

Content Size

96.3 kB

After Optimization

87.0 kB

In fact, the total size of Sky-sailor.ethz.ch main page is 96.3 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. Only 10% of websites need less resources to load. Images take 95.2 kB which makes up the majority of the site volume.

HTML Optimization

-55%

Potential reduce by 330 B

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

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.

Image Optimization

-9%

Potential reduce by 8.7 kB

  • Original 95.2 kB
  • After minification 86.6 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. Sky Sailor Ethz images are well optimized though.

CSS Optimization

-62%

Potential reduce by 293 B

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

Requests Breakdown

We found no issues to fix!

Requests Now

22

After Optimization

22

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.

Accessibility Review

sky-sailor.ethz.ch accessibility score

33

Accessibility Issues

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

<frame> or <iframe> elements do not have a title

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a [lang] attribute

Best Practices

sky-sailor.ethz.ch best practices score

75

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

SEO Factors

sky-sailor.ethz.ch SEO score

64

Search Engine Optimization Advices

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    N/A

  • Encoding

    N/A

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.

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: