2.8 sec in total
140 ms
1.7 sec
1 sec
Visit proofschool.org now to see the best up-to-date PROOF SCHOOL content for United States and also check out these interesting facts you probably never knew about proofschool.org
Proof School is a secondary school in San Francisco for kids who love math. We are building a maker culture that puts ideas into practice.
Visit proofschool.orgWe analyzed Proofschool.org page load time and found that the first response time was 140 ms and then it took 2.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster.
proofschool.org performance score
name
value
score
weighting
Value7.1 s
1/100
10%
Value16.3 s
0/100
25%
Value8.0 s
22/100
10%
Value1,540 ms
13/100
30%
Value0.06
98/100
15%
Value11.5 s
18/100
10%
140 ms
67 ms
50 ms
61 ms
350 ms
Our browser made a total of 56 requests to load all elements on the main page. We found that 5% of them (3 requests) were addressed to the original Proofschool.org, 68% (38 requests) were made to and 14% (8 requests) were made to Static1.squarespace.com. The less responsive or slowest element that took the longest time to load (453 ms) belongs to the original domain Proofschool.org.
Page size can be reduced by 92.8 kB (74%)
126.3 kB
33.5 kB
In fact, the total size of Proofschool.org main page is 126.3 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. 60% of websites need less resources to load. HTML takes 109.0 kB which makes up the majority of the site volume.
Potential reduce by 90.2 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 90.2 kB or 83% of the original size.
Potential reduce by 2.7 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. Obviously, PROOF SCHOOL needs image optimization as it can save up to 2.7 kB or 15% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.
Number of requests can be reduced by 6 (35%)
17
11
The browser has sent 17 CSS, Javascripts, AJAX and image requests in order to completely render the main page of PROOF SCHOOL. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 4 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.
www.proofschool.org
140 ms
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css
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d
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commerce-cf5ca5fa5feb9716f7f4-min.js
31 ms
commerce-7f4130fee43d9b486ac93410db2112d3-min.css
28 ms
site.css
31 ms
social-accounts.svg
71 ms
64 ms
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RecordHit
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proofschool.org accessibility score
proofschool.org 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
Page has valid source maps
proofschool.org SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Links are not crawlable
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
EN
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Proofschool.org 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 Proofschool.org 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.
proofschool.org
Open Graph description is not detected on the main page of PROOF SCHOOL. 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: