1.3 sec in total
27 ms
977 ms
297 ms
Welcome to physicsclassroom.com homepage info - get ready to check Physics Classroom best content for United States right away, or after learning these important things about physicsclassroom.com
The Physics Classroom serves students, teachers and classrooms by providing classroom-ready resources that utilize an easy-to-understand language that makes learning interactive and multi-dimensional....
Visit physicsclassroom.comWe analyzed Physicsclassroom.com page load time and found that the first response time was 27 ms and then it took 1.3 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 25% of websites can load faster.
physicsclassroom.com performance score
name
value
score
weighting
Value4.3 s
18/100
10%
Value8.9 s
1/100
25%
Value10.3 s
8/100
10%
Value9,380 ms
0/100
30%
Value0.158
74/100
15%
Value29.2 s
0/100
10%
27 ms
45 ms
26 ms
16 ms
17 ms
Our browser made a total of 87 requests to load all elements on the main page. We found that 45% of them (39 requests) were addressed to the original Physicsclassroom.com, 10% (9 requests) were made to Google.com and 5% (4 requests) were made to Pagead2.googlesyndication.com. The less responsive or slowest element that took the longest time to load (379 ms) relates to the external source Googleads.g.doubleclick.net.
Page size can be reduced by 1.5 MB (59%)
2.4 MB
991.7 kB
In fact, the total size of Physicsclassroom.com main page is 2.4 MB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 80% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. Javascripts take 1.5 MB which makes up the majority of the site volume.
Potential reduce by 201.8 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 201.8 kB or 77% of the original size.
Potential reduce by 16.1 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. Physics Classroom images are well optimized though.
Potential reduce by 958.3 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 958.3 kB or 64% of the original size.
Potential reduce by 278.8 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. Physicsclassroom.com needs all CSS files to be minified and compressed as it can save up to 278.8 kB or 83% of the original size.
Number of requests can be reduced by 50 (64%)
78
28
The browser has sent 78 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Physics Classroom. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 27 to 1 for JavaScripts and from 10 to 1 for CSS and as a result speed up the page load time.
physicsclassroom.com
27 ms
www.physicsclassroom.com
45 ms
GetResource.ashx
26 ms
GetResource.ashx
16 ms
GetResource.ashx
17 ms
GetResource.ashx
21 ms
jquery-ui.css
45 ms
jquery-1.11.1.min.js
38 ms
jquery-ui-1.10.4.min.js
37 ms
adsbygoogle.js
37 ms
jquery-migrate-1.2.1.js
38 ms
GetResource.ashx
34 ms
GetResource.ashx
33 ms
WebResource.axd
37 ms
ScriptResource.axd
36 ms
ScriptResource.axd
35 ms
addthis_widget.js
93 ms
Combined-JS.js
33 ms
analytics.js
199 ms
img.gif
197 ms
cse.js
206 ms
gradient_FA7101_FA7101.png
180 ms
physicsclassroom.png
179 ms
facebook.png
182 ms
twitter.png
192 ms
google_plus.png
178 ms
pinterest.png
182 ms
search-btn.png
185 ms
gradient_FA7101_FA7101.png
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short-banner.jpg
189 ms
red-icon.png
185 ms
yellow-icon.png
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green-icon.png
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red-icon.png
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yellow-icon.png
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green-icon.png
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red-icon-thumb.png
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green-icon-thumb.png
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yellow-icon-thumb.png
189 ms
widgets.js
140 ms
300lo.json
72 ms
counter.8eb9e83b9fa0d4af1e4f.js
60 ms
overlay.png
52 ms
ca-pub-3632484610999069.js
152 ms
zrt_lookup.html
339 ms
show_ads_impl.js
116 ms
lato-reg-webfont.woff
75 ms
1041.AftaSansThin-Regular.otf.woff
75 ms
1074.Bitter-Regular.otf.woff
73 ms
1025.OpenSans-Regular.woff
90 ms
oswald-regular-webfont.woff
74 ms
sh.7c7179124ea24ac6ba46caac.html
90 ms
cse.js
343 ms
timeline.1b43d11859b7663a2225b885f87704a5.js
296 ms
shares.json
259 ms
layers.3643cb2e25fb91c29386.js
58 ms
ads
209 ms
datapair
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2215
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osd.js
202 ms
collect
234 ms
ads
379 ms
syndication
131 ms
473063820164734978
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jsapi
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default+en.css
5 ms
default.css
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default+en.I.js
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pixel
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pixel
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default.css
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async-ads.js
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google_custom_search_watermark.gif
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small-logo.png
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clear.gif
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nav_logo114.png
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10693450931355092509
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abg.js
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m_js_controller.js
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googlelogo_color_112x36dp.png
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s
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x_button_blue2.png
47 ms
timeline.4d087f49a21e27038d9769d7c976b8fa.default.css
28 ms
timeline.4d087f49a21e27038d9769d7c976b8fa.default.css
30 ms
1f44f.png
27 ms
physicsclassroom.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
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
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
physicsclassroom.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
Browser errors were logged to the console
Page has valid source maps
physicsclassroom.com SEO score
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Impact
Issue
Links do not have descriptive text
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
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Physicsclassroom.com 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 Physicsclassroom.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.
physicsclassroom.com
Open Graph description is not detected on the main page of Physics Classroom. 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: