3.6 sec in total
644 ms
2.8 sec
145 ms
Click here to check amazing Online Aviation Theory content. Otherwise, check out these important facts you probably never knew about onlineaviationtheory.com
The Leaders in Online Aviation and Helicopter Theory Training
Visit onlineaviationtheory.comWe analyzed Onlineaviationtheory.com page load time and found that the first response time was 644 ms and then it took 2.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster.
onlineaviationtheory.com performance score
name
value
score
weighting
Value7.1 s
1/100
10%
Value20.9 s
0/100
25%
Value13.9 s
1/100
10%
Value90 ms
99/100
30%
Value0.004
100/100
15%
Value17.5 s
4/100
10%
644 ms
1085 ms
210 ms
35 ms
27 ms
Our browser made a total of 12 requests to load all elements on the main page. We found that 50% of them (6 requests) were addressed to the original Onlineaviationtheory.com, 17% (2 requests) were made to Google-analytics.com and 17% (2 requests) were made to Connect.facebook.net. The less responsive or slowest element that took the longest time to load (1.1 sec) belongs to the original domain Onlineaviationtheory.com.
Page size can be reduced by 22.3 kB (43%)
52.5 kB
30.2 kB
In fact, the total size of Onlineaviationtheory.com main page is 52.5 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. HTML takes 22.7 kB which makes up the majority of the site volume.
Potential reduce by 15.1 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 15.1 kB or 67% of the original size.
Potential reduce by 50 B
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. This website has mostly compressed JavaScripts.
Potential reduce by 7.2 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. Onlineaviationtheory.com needs all CSS files to be minified and compressed as it can save up to 7.2 kB or 81% of the original size.
We found no issues to fix!
10
10
The browser has sent 10 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Online Aviation Theory. According to our analytics all requests are already optimized.
onlineaviationtheory.com
644 ms
onlineaviationtheory.com
1085 ms
Styles.css
210 ms
analytics.js
35 ms
fbevents.js
27 ms
homeHeader.gif
222 ms
homeBody.gif
852 ms
homeFooter.gif
842 ms
106672880032953
30 ms
collect
16 ms
59 ms
71 ms
onlineaviationtheory.com accessibility score
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
Background and foreground colors do not have a sufficient contrast ratio.
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
Heading elements are not in a sequentially-descending order
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
Links do not have a discernible name
Tables and lists
These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.
Impact
Issue
Lists do not contain only <li> elements and script supporting elements (<script> and <template>).
List items (<li>) are not contained within <ul> or <ol> parent elements.
onlineaviationtheory.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
General
Impact
Issue
Detected JavaScript libraries
onlineaviationtheory.com SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
robots.txt is not valid
Mobile Friendly
Make sure your pages are mobile friendly so users don’t have to pinch or zoom in order to read the content pages. [Learn more](https://developers.google.com/search/mobile-sites/).
Impact
Issue
Document uses legible font sizes
EN
EN
ISO-8859-1
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Onlineaviationtheory.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 Onlineaviationtheory.com main page’s claimed encoding is iso-8859-1. 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.
onlineaviationtheory.com
Open Graph description is not detected on the main page of Online Aviation Theory. 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: