791 ms in total
40 ms
631 ms
120 ms
Welcome to leadinglesson.com homepage info - get ready to check Leading Lesson best content for United States right away, or after learning these important things about leadinglesson.com
Detailed study guides and practice problems on multivariable calculus.
Visit leadinglesson.comWe analyzed Leadinglesson.com page load time and found that the first response time was 40 ms and then it took 751 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.
leadinglesson.com performance score
name
value
score
weighting
Value3.0 s
51/100
10%
Value3.3 s
70/100
25%
Value3.3 s
90/100
10%
Value500 ms
58/100
30%
Value0.015
100/100
15%
Value4.3 s
85/100
10%
40 ms
290 ms
70 ms
77 ms
86 ms
Our browser made a total of 13 requests to load all elements on the main page. We found that 85% of them (11 requests) were addressed to the original Leadinglesson.com, 15% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (290 ms) belongs to the original domain Leadinglesson.com.
Page size can be reduced by 175.2 kB (60%)
293.1 kB
118.0 kB
In fact, the total size of Leadinglesson.com main page is 293.1 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. 20% of websites need less resources to load. Javascripts take 221.2 kB which makes up the majority of the site volume.
Potential reduce by 4.9 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. This page needs HTML code to be minified as it can gain 1.7 kB, which is 26% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 4.9 kB or 76% of the original size.
Potential reduce by 4.2 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. Leading Lesson images are well optimized though.
Potential reduce by 148.3 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 148.3 kB or 67% of the original size.
Potential reduce by 17.8 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. Leadinglesson.com needs all CSS files to be minified and compressed as it can save up to 17.8 kB or 84% of the original size.
Number of requests can be reduced by 4 (36%)
11
7
The browser has sent 11 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Leading Lesson. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 5 to 1 for JavaScripts and as a result speed up the page load time.
leadinglesson.com
40 ms
www.leadinglesson.com
290 ms
base_style.css
70 ms
style.css
77 ms
jquery-1.5.1.min.js
86 ms
jquery-ui-1.8.13.custom.min.js
98 ms
jquery.form.js
76 ms
segmentmanip.js
77 ms
ga.js
22 ms
leading_lesson_logo_large.png
175 ms
redblock.png
143 ms
multivariable-calculus.png
127 ms
__utm.gif
13 ms
leadinglesson.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
Image elements do not have [alt] attributes
Form elements do not have associated labels
Links do not have a discernible name
Tables and lists
These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.
Impact
Issue
Lists do not contain only <li> elements and script supporting elements (<script> and <template>).
leadinglesson.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
leadinglesson.com 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
EN
EN
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Leadinglesson.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 Leadinglesson.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.
leadinglesson.com
Open Graph description is not detected on the main page of Leading Lesson. 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: