Tools & Wizards About Us
quantlib.org screenshot

Report Summary

  • 99

    Performance

    Renders faster than
    96% of other websites

  • 89

    Accessibility

    Visual factors better than
    that of 71% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 92

    SEO

    Google-friendlier than
    74% of websites

quantlib.org

QuantLib, a free/open-source library for quantitative finance

Page Load Speed

216 ms in total

First Response

11 ms

Resources Loaded

103 ms

Page Rendered

102 ms

quantlib.org screenshot

About Website

Welcome to quantlib.org homepage info - get ready to check Quant Lib best content for India right away, or after learning these important things about quantlib.org

QuantLib, a free/open-source library for quantitative finance

Visit quantlib.org

Key Findings

We analyzed Quantlib.org page load time and found that the first response time was 11 ms and then it took 205 ms to load all DOM resources and completely render a web page. This is an excellent result, as only a small number of websites can load faster.

Performance Metrics

quantlib.org performance score

99

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.4 s

97/100

10%

LCP (Largest Contentful Paint)

Value2.0 s

97/100

25%

SI (Speed Index)

Value1.4 s

100/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.057

98/100

15%

TTI (Time to Interactive)

Value2.0 s

99/100

10%

Network Requests Diagram

quantlib.org

11 ms

www.quantlib.org

56 ms

fonts.css

10 ms

quantlib.css

16 ms

Our browser made a total of 4 requests to load all elements on the main page. We found that all of those requests were addressed to Quantlib.org and no external sources were called. The less responsive or slowest element that took the longest time to load (56 ms) belongs to the original domain Quantlib.org.

Page Optimization Overview & Recommendations

Page size can be reduced by 15.5 kB (37%)

Content Size

42.2 kB

After Optimization

26.7 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Quantlib.org main page is 42.2 kB. This result falls within a vast category (top 1 000 000) of heavyweight, probably not optimized, and thus slow loading web pages. Only a small number of websites need less resources to load. Images take 19.1 kB which makes up the majority of the site volume.

HTML Optimization

-64%

Potential reduce by 4.8 kB

  • Original 7.5 kB
  • After minification 7.2 kB
  • After compression 2.7 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 4.8 kB or 64% of the original size.

Image Optimization

-5%

Potential reduce by 1.0 kB

  • Original 19.1 kB
  • After minification 18.0 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. Quant Lib images are well optimized though.

JavaScript Optimization

-58%

Potential reduce by 6.0 kB

  • Original 10.4 kB
  • After minification 10.4 kB
  • After compression 4.4 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 6.0 kB or 58% of the original size.

CSS Optimization

-69%

Potential reduce by 3.6 kB

  • Original 5.1 kB
  • After minification 3.7 kB
  • After compression 1.6 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. Quantlib.org needs all CSS files to be minified and compressed as it can save up to 3.6 kB or 69% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

2

After Optimization

2

  • CSS

The browser has sent 2 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Quant Lib. According to our analytics all requests are already optimized.

Network Requests Diagram

quantlib.org

quantlib.org

11 ms

www.quantlib.org

www.quantlib.org

56 ms

fonts.css

fonts.css

10 ms

quantlib.css

quantlib.css

16 ms

Accessibility Review

quantlib.org accessibility score

89

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.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

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

High

<html> element does not have a [lang] attribute

Best Practices

quantlib.org best practices score

92

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

SEO Factors

quantlib.org SEO score

92

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

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

High

Document uses legible font sizes

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 Quantlib.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 Quantlib.org 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

quantlib.org

Open Graph description is not detected on the main page of Quant Lib. 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: