856 ms in total
144 ms
366 ms
346 ms
Click here to check amazing Relativitycollapse content. Otherwise, check out these important facts you probably never knew about relativitycollapse.com
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Visit relativitycollapse.comWe analyzed Relativitycollapse.com page load time and found that the first response time was 144 ms and then it took 712 ms to load all DOM resources and completely render a web page. This is quite a good result, as only 10% of websites can load faster.
relativitycollapse.com performance score
name
value
score
weighting
Value6.9 s
1/100
10%
Value6.9 s
7/100
25%
Value7.7 s
25/100
10%
Value1,960 ms
8/100
30%
Value0.039
100/100
15%
Value9.3 s
32/100
10%
144 ms
196 ms
174 ms
185 ms
182 ms
Our browser made a total of 9 requests to load all elements on the main page. We found that all of those requests were addressed to Relativitycollapse.com and no external sources were called. The less responsive or slowest element that took the longest time to load (211 ms) belongs to the original domain Relativitycollapse.com.
Page size can be reduced by 12.5 kB (23%)
53.6 kB
41.1 kB
In fact, the total size of Relativitycollapse.com main page is 53.6 kB. This result falls within a vast category (top 1 000 000) of heavyweight, probably not optimized, and thus slow loading web pages. Only 5% of websites need less resources to load. Images take 40.3 kB which makes up the majority of the site volume.
Potential reduce by 8.6 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 8.6 kB or 65% of the original size.
Potential reduce by 3.9 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. Relativitycollapse images are well optimized though.
We found no issues to fix!
8
8
The browser has sent 8 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Relativitycollapse. According to our analytics all requests are already optimized.
relativitycollapse.com
144 ms
emc2_doodle_light_speed.jpg
196 ms
doodle_light_speed_albert_einstein_dummies.jpg
174 ms
speed_of_light_emc2.jpg
185 ms
btn_buynowCC_LG.gif
182 ms
pixel.gif
184 ms
doodle_light_speed.jpg
182 ms
special%2520relativity_1.jpg
200 ms
special%2520relativity_2.jpg
211 ms
relativitycollapse.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.
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
Internationalization and localization
These are opportunities to improve the interpretation of your content by users in different locales.
Impact
Issue
<html> element does not have a [lang] attribute
Best practices
These items highlight common accessibility best practices.
Impact
Issue
[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.
relativitycollapse.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
Page has valid source maps
Issues were logged in the Issues panel in Chrome Devtools
relativitycollapse.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
ZH
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Relativitycollapse.com can be misinterpreted by Google and other search engines. Our service has detected that Chinese 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 Relativitycollapse.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.
relativitycollapse.com
Open Graph description is not detected on the main page of Relativitycollapse. 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: