Tools & Wizards About Us
calculus.sfsu.edu screenshot

Report Summary

  • 28

    Performance

    Renders faster than
    48% of other websites

  • 68

    Accessibility

    Visual factors better than
    that of 33% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 73

    SEO

    Google-friendlier than
    31% of websites

calculus.sfsu.edu

Take distance Calculus course online class with video lectures, live help, forum. Enroll and transfer online calc to medical school, MBA, or your univ...

Page Load Speed

4.3 sec in total

First Response

578 ms

Resources Loaded

3.5 sec

Page Rendered

186 ms

calculus.sfsu.edu screenshot

About Website

Welcome to calculus.sfsu.edu homepage info - get ready to check Calculus Sfsu best content for United States right away, or after learning these important things about calculus.sfsu.edu

Online Calculus course at San Francisco State University for transfer to your university, or medical school

Visit calculus.sfsu.edu

Key Findings

We analyzed Calculus.sfsu.edu page load time and found that the first response time was 578 ms and then it took 3.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.

Performance Metrics

calculus.sfsu.edu performance score

28

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.2 s

99/100

10%

LCP (Largest Contentful Paint)

Value7.1 s

6/100

25%

SI (Speed Index)

Value3.7 s

86/100

10%

TBT (Total Blocking Time)

Value1,350 ms

17/100

30%

CLS (Cumulative Layout Shift)

Value1.094

1/100

15%

TTI (Time to Interactive)

Value9.6 s

29/100

10%

Network Requests Diagram

calculus.sfsu.edu

578 ms

sfsuseal.gif

329 ms

FPeTRmHuOBA

94 ms

www-embed-player-vfl8xM8me.css

96 ms

www-embed-player.js

130 ms

Our browser made a total of 23 requests to load all elements on the main page. We found that 52% of them (12 requests) were addressed to the original Calculus.sfsu.edu, 13% (3 requests) were made to S.ytimg.com and 9% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (2.5 sec) belongs to the original domain Calculus.sfsu.edu.

Page Optimization Overview & Recommendations

Page size can be reduced by 453.5 kB (74%)

Content Size

610.4 kB

After Optimization

156.8 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Calculus.sfsu.edu main page is 610.4 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. 25% of websites need less resources to load. CSS take 257.7 kB which makes up the majority of the site volume.

HTML Optimization

-78%

Potential reduce by 98.7 kB

  • Original 126.5 kB
  • After minification 125.6 kB
  • After compression 27.8 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 98.7 kB or 78% of the original size.

Image Optimization

-38%

Potential reduce by 2.6 kB

  • Original 6.9 kB
  • After minification 4.3 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, Calculus Sfsu needs image optimization as it can save up to 2.6 kB or 38% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-63%

Potential reduce by 138.6 kB

  • Original 219.2 kB
  • After minification 219.1 kB
  • After compression 80.7 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 138.6 kB or 63% of the original size.

CSS Optimization

-83%

Potential reduce by 213.6 kB

  • Original 257.7 kB
  • After minification 255.4 kB
  • After compression 44.1 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. Calculus.sfsu.edu needs all CSS files to be minified and compressed as it can save up to 213.6 kB or 83% of the original size.

Requests Breakdown

Number of requests can be reduced by 10 (50%)

Requests Now

20

After Optimization

10

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 20 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Calculus Sfsu. 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.

Network Requests Diagram

calculus.sfsu.edu

calculus.sfsu.edu

578 ms

sfsuseal.gif

sfsuseal.gif

329 ms

FPeTRmHuOBA

FPeTRmHuOBA

94 ms

www-embed-player-vfl8xM8me.css

www-embed-player-vfl8xM8me.css

96 ms

www-embed-player.js

www-embed-player.js

130 ms

base.js

base.js

200 ms

mango.js

mango.js

2515 ms

urchin.js

urchin.js

27 ms

Tqng9ngJVK4Gqvh3e602hP-HqlN49KFEUSDtmrOPmWo.js

Tqng9ngJVK4Gqvh3e602hP-HqlN49KFEUSDtmrOPmWo.js

24 ms

ad_status.js

ad_status.js

27 ms

2UX7WLTfW3W8TclTUvlFyQ.woff

2UX7WLTfW3W8TclTUvlFyQ.woff

23 ms

RxZJdnzeo3R5zSexge8UUT8E0i7KZn-EPnyo3HZu7kw.woff

RxZJdnzeo3R5zSexge8UUT8E0i7KZn-EPnyo3HZu7kw.woff

24 ms

latex.css

latex.css

83 ms

expand_all.png

expand_all.png

82 ms

print.png

print.png

97 ms

pop_out.png

pop_out.png

252 ms

zoom_in.png

zoom_in.png

160 ms

down.png

down.png

174 ms

map1.gif

map1.gif

392 ms

expand.png

expand.png

328 ms

up.png

up.png

444 ms

collapse_all.png

collapse_all.png

470 ms

__utm.gif

__utm.gif

10 ms

Accessibility Review

calculus.sfsu.edu accessibility score

68

Accessibility Issues

Contrast

These are opportunities to improve the legibility of your content.

Impact

Issue

High

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

High

<frame> or <iframe> elements do not have a title

High

Image elements do not have [alt] attributes

High

<object> elements do not have alternate text

Best Practices

calculus.sfsu.edu best practices score

67

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

High

Browser errors were logged to the console

SEO Factors

calculus.sfsu.edu SEO score

73

Search Engine Optimization Advices

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Impact

Issue

High

Image elements do not have [alt] attributes

High

Document uses plugins

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

High

Document doesn't use legible font sizes

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    EN

  • Encoding

    ISO-8859-1

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Calculus.sfsu.edu 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 Calculus.sfsu.edu main page’s claimed encoding is iso-8859-1. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

Social Sharing Optimization

calculus.sfsu.edu

Open Graph description is not detected on the main page of Calculus Sfsu. 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: