2 sec in total
172 ms
1.7 sec
128 ms
Click here to check amazing Feynman Online content. Otherwise, check out these important facts you probably never knew about feynmanonline.com
Richard Feynman, scientist, teacher, raconteur, and drummer. He assisted in the development of the atomic bomb, expanded the understanding of quantumelectrodynamics, translated Mayan hieroglyphics, an...
Visit feynmanonline.comWe analyzed Feynmanonline.com page load time and found that the first response time was 172 ms and then it took 1.8 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 35% of websites can load faster.
feynmanonline.com performance score
name
value
score
weighting
Value4.7 s
13/100
10%
Value5.5 s
19/100
25%
Value6.0 s
46/100
10%
Value170 ms
92/100
30%
Value0.031
100/100
15%
Value6.3 s
61/100
10%
172 ms
952 ms
43 ms
76 ms
79 ms
Our browser made a total of 36 requests to load all elements on the main page. We found that 3% of them (1 request) were addressed to the original Feynmanonline.com, 81% (29 requests) were made to Feynman.com and 11% (4 requests) were made to Fonts.gstatic.com. The less responsive or slowest element that took the longest time to load (952 ms) relates to the external source Feynman.com.
Page size can be reduced by 124.2 kB (42%)
297.2 kB
173.0 kB
In fact, the total size of Feynmanonline.com main page is 297.2 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. 50% of websites need less resources to load. CSS take 165.2 kB which makes up the majority of the site volume.
Potential reduce by 37.8 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 37.8 kB or 79% of the original size.
Potential reduce by 0 B
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. Feynman Online images are well optimized though.
Potential reduce by 15.1 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 15.1 kB or 26% of the original size.
Potential reduce by 71.4 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. Feynmanonline.com needs all CSS files to be minified and compressed as it can save up to 71.4 kB or 43% of the original size.
Number of requests can be reduced by 24 (83%)
29
5
The browser has sent 29 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Feynman Online. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 15 to 1 for JavaScripts and from 11 to 1 for CSS and as a result speed up the page load time.
feynmanonline.com
172 ms
www.feynman.com
952 ms
wp-emoji-release.min.js
43 ms
style.min.css
76 ms
all.css
79 ms
bootstrap.css
116 ms
front.css
159 ms
css
16 ms
athemes-glyphs.css
77 ms
bootstrap.min.css
146 ms
style.css
112 ms
jquery.js
173 ms
jquery-migrate.min.js
143 ms
bootstrap.min.js
171 ms
front.js
171 ms
chosen.jquery.min.js
198 ms
bootstrap.min.js
196 ms
superfish.js
202 ms
supersubs.js
203 ms
settings.js
203 ms
css
30 ms
mediaelementplayer-legacy.min.css
308 ms
wp-mediaelement.min.css
309 ms
jquery.form.min.js
314 ms
wp-embed.min.js
315 ms
mediaelement-and-player.min.js
316 ms
mediaelement-migrate.min.js
315 ms
wp-mediaelement.min.js
315 ms
feynapple.jpg
88 ms
fdanim.gif
88 ms
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22 ms
3y9I6aknfjLm_3lMKjiMgmUUYBs04aUXNxt9gW2LIfto9tWZd2GP.ttf
22 ms
3y9I6aknfjLm_3lMKjiMgmUUYBs04aUXNxt9gW2LIftoqNWZd2GP.ttf
212 ms
3y9I6aknfjLm_3lMKjiMgmUUYBs04aUXNxt9gW2LIftodtWZd2GP.ttf
213 ms
athemes-glyphs.woff
213 ms
mejs-controls.svg
44 ms
feynmanonline.com accessibility score
ARIA
These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.
Impact
Issue
[aria-*] attributes do not have valid values
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
feynmanonline.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
feynmanonline.com SEO score
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
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Feynmanonline.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 Feynmanonline.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.
feynmanonline.com
Open Graph description is not detected on the main page of Feynman Online. 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: