558 ms in total
249 ms
251 ms
58 ms
Welcome to illusionsindex.org homepage info - get ready to check Illusions Index best content for United States right away, or after learning these important things about illusionsindex.org
The Illusions Index is a fully searchable curated collection of illusions brought to you by the Centre for the Study of Perceptual Experience.
Visit illusionsindex.orgWe analyzed Illusionsindex.org page load time and found that the first response time was 249 ms and then it took 309 ms to load all DOM resources and completely render a web page. This is an excellent result, as only 5% of websites can load faster.
illusionsindex.org performance score
name
value
score
weighting
Value5.7 s
5/100
10%
Value6.9 s
6/100
25%
Value5.9 s
48/100
10%
Value780 ms
37/100
30%
Value0.472
18/100
15%
Value7.9 s
44/100
10%
249 ms
Our browser made a total of 1 request to load all elements on the main page. We found that all of those requests were addressed to Illusionsindex.org and no external sources were called. The less responsive or slowest element that took the longest time to load (249 ms) belongs to the original domain Illusionsindex.org.
Page size can be reduced by 675.4 kB (69%)
972.0 kB
296.6 kB
In fact, the total size of Illusionsindex.org main page is 972.0 kB. This result falls within the top 5000 of lightweight and thus fast loading web pages. Only a small number of websites need less resources to load. CSS take 497.6 kB which makes up the majority of the site volume.
Potential reduce by 22 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 22 B or 12% of the original size.
Potential reduce by 2.0 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. Illusions Index images are well optimized though.
Potential reduce by 234.3 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 234.3 kB or 64% of the original size.
Potential reduce by 439.0 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. Illusionsindex.org needs all CSS files to be minified and compressed as it can save up to 439.0 kB or 88% of the original size.
We found no issues to fix!
0
0
Besides the initial HTML request, no CSS, Javascripts, AJAX or image files were requested in the course of web page rendering.
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illusionsindex.org accessibility score
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
Image elements do not have [alt] attributes
Links do not have a discernible name
illusionsindex.org best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Ensure CSP is effective against XSS attacks
General
Impact
Issue
Detected JavaScript libraries
illusionsindex.org SEO score
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Impact
Issue
Image elements do not have [alt] attributes
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
Tap targets are not sized appropriately
EN
N/A
N/A
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Illusionsindex.org 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 Illusionsindex.org 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.
{{og_description}}
illusionsindex.org
Open Graph description is not detected on the main page of Illusions Index. 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: