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implementingquantlib.com screenshot

Report Summary

  • 56

    Performance

    Renders faster than
    72% of other websites

  • 75

    Accessibility

    Visual factors better than
    that of 41% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 100

    SEO

    Google-friendlier than
    94% of websites

implementingquantlib.com

Implementing QuantLib

Page Load Speed

873 ms in total

First Response

127 ms

Resources Loaded

660 ms

Page Rendered

86 ms

implementingquantlib.com screenshot

About Website

Welcome to implementingquantlib.com homepage info - get ready to check Implementing Quant Lib best content for United States right away, or after learning these important things about implementingquantlib.com

Welcome! I'm Luigi Ballabio, co-founder and current maintainer of the open-source QuantLib project, and I help quantitative teams to build their own pricing solutions based on QuantLib. I'm also the a...

Visit implementingquantlib.com

Key Findings

We analyzed Implementingquantlib.com page load time and found that the first response time was 127 ms and then it took 746 ms to load all DOM resources and completely render a web page. This is quite a good result, as only 15% of websites can load faster.

Performance Metrics

implementingquantlib.com performance score

56

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.5 s

66/100

10%

LCP (Largest Contentful Paint)

Value3.0 s

78/100

25%

SI (Speed Index)

Value2.5 s

97/100

10%

TBT (Total Blocking Time)

Value1,500 ms

14/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value13.1 s

12/100

10%

Network Requests Diagram

www.implementingquantlib.com

127 ms

main.css

3 ms

tex-svg.js

46 ms

banner.js

366 ms

embed

173 ms

Our browser made a total of 79 requests to load all elements on the main page. We found that 13% of them (10 requests) were addressed to the original Implementingquantlib.com, 80% (63 requests) were made to Substackcdn.com and 1% (1 request) were made to Cdn.jsdelivr.net. The less responsive or slowest element that took the longest time to load (366 ms) belongs to the original domain Implementingquantlib.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 32.6 kB (9%)

Content Size

349.9 kB

After Optimization

317.3 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Implementingquantlib.com main page is 349.9 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. 50% of websites need less resources to load. Images take 142.1 kB which makes up the majority of the site volume.

HTML Optimization

-70%

Potential reduce by 5.0 kB

  • Original 7.1 kB
  • After minification 6.2 kB
  • After compression 2.1 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 877 B, which is 12% 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 5.0 kB or 70% of the original size.

Image Optimization

-8%

Potential reduce by 11.0 kB

  • Original 142.1 kB
  • After minification 131.1 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. Implementing Quant Lib images are well optimized though.

JavaScript Optimization

-1%

Potential reduce by 374 B

  • Original 59.6 kB
  • After minification 59.6 kB
  • After compression 59.2 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. This website has mostly compressed JavaScripts.

CSS Optimization

-11%

Potential reduce by 16.2 kB

  • Original 141.1 kB
  • After minification 138.2 kB
  • After compression 124.9 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. Implementingquantlib.com needs all CSS files to be minified and compressed as it can save up to 16.2 kB or 11% of the original size.

Requests Breakdown

Number of requests can be reduced by 66 (85%)

Requests Now

78

After Optimization

12

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 78 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Implementing Quant Lib. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 7 to 1 for JavaScripts and from 61 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

www.implementingquantlib.com

www.implementingquantlib.com

127 ms

main.css

main.css

3 ms

tex-svg.js

tex-svg.js

46 ms

banner.js

banner.js

366 ms

embed

embed

173 ms

implementing.jpg

implementing.jpg

9 ms

cookbook.jpg

cookbook.jpg

22 ms

profile.png

profile.png

21 ms

rss32.png

rss32.png

21 ms

twitter32.png

twitter32.png

21 ms

youtube32.png

youtube32.png

22 ms

linkedin32.png

linkedin32.png

26 ms

entry-c6430343.css

entry-c6430343.css

33 ms

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index-2caf47c8.css

38 ms

responsive_img-51b02764.css

responsive_img-51b02764.css

35 ms

FlexBox-9653b903.css

FlexBox-9653b903.css

38 ms

free_email_form-a84f1e43.css

free_email_form-a84f1e43.css

37 ms

Modal-507c84e7.css

Modal-507c84e7.css

40 ms

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createComponent-f90fb756.css

34 ms

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40 ms

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41 ms

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42 ms

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43 ms

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44 ms

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42 ms

UserBadge-d10c54cf.css

UserBadge-d10c54cf.css

44 ms

Tooltip-d0af0cf2.css

Tooltip-d0af0cf2.css

46 ms

Avatar-21e4510c.css

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51 ms

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53 ms

IntroPopup-a01e8e94.css

IntroPopup-a01e8e94.css

46 ms

Banner-cc32eba2.css

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48 ms

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46 ms

homepage_hooks-1b33585e.css

homepage_hooks-1b33585e.css

48 ms

sortBy-daa34b4f.css

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54 ms

Progress-3aee957a.css

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51 ms

recentSurfaces-fa9efc75.css

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52 ms

user_indicator-e7037a0a.css

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54 ms

ShareableImageModal-6a735338.css

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56 ms

Button-8514f63d.css

Button-8514f63d.css

57 ms

PubAccentTheme-e486b485.css

PubAccentTheme-e486b485.css

54 ms

overflow_menu-db9a534e.css

overflow_menu-db9a534e.css

58 ms

newsletter_item_list-03468b3d.css

newsletter_item_list-03468b3d.css

65 ms

CreditCardIcon-d7e0cff2.css

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57 ms

ProfileSetupToast-b1d1db47.css

ProfileSetupToast-b1d1db47.css

59 ms

CommunityPostView-26824100.css

CommunityPostView-26824100.css

57 ms

Attachments-3dc7c0bf.css

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62 ms

CommentBody-984c6bbf.css

CommentBody-984c6bbf.css

58 ms

AlertDialog-9ade601d.css

AlertDialog-9ade601d.css

62 ms

6c2ff3e3828e4017b7faf7b63e24cdf8.min.js

6c2ff3e3828e4017b7faf7b63e24cdf8.min.js

35 ms

beacon.min.js

beacon.min.js

182 ms

uniq-b886ec82.css

uniq-b886ec82.css

41 ms

Popover-6a0c224a.css

Popover-6a0c224a.css

51 ms

ChatPage-3c675abd.css

ChatPage-3c675abd.css

41 ms

ChatAppUpsell-5a642ab8.css

ChatAppUpsell-5a642ab8.css

38 ms

post-3cd5a9c4.css

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37 ms

iterator-a23ad7ec.css

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41 ms

mention-981bc9fe.css

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38 ms

ImageViewerModal-3811bdd5.css

ImageViewerModal-3811bdd5.css

39 ms

VideoVerticalMenu-a9e51cc8.css

VideoVerticalMenu-a9e51cc8.css

40 ms

Recipe-796f9114.css

Recipe-796f9114.css

39 ms

recommend_linked_publication_modal-f798e100.css

recommend_linked_publication_modal-f798e100.css

43 ms

AuditionPlayer-5637d633.css

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40 ms

SectionLogo-44ead5a1.css

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39 ms

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40 ms

comments_page-83ec46a1.css

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36 ms

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37 ms

Field-6e53593d.css

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39 ms

Radio-c396123a.css

Radio-c396123a.css

40 ms

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37 ms

FilePicker-011ef325.css

FilePicker-011ef325.css

38 ms

setup_all_podcasts-9189be33.css

setup_all_podcasts-9189be33.css

38 ms

CookieConsentFooter-0d9aca19.css

CookieConsentFooter-0d9aca19.css

38 ms

main.56ef3f63ea8d26037763.css

main.56ef3f63ea8d26037763.css

94 ms

color_links.33eb7c3bd37d78bc2dc3.css

color_links.33eb7c3bd37d78bc2dc3.css

119 ms

main-2cdbf846.js

main-2cdbf846.js

133 ms

https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F223c8997-c723-410f-b32c-0d9892293101_1200x1200.png

https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F223c8997-c723-410f-b32c-0d9892293101_1200x1200.png

133 ms

https%3A%2F%2Fsubstack.com%2Fimg%2Fsubstack_wordmark.black.png

https%3A%2F%2Fsubstack.com%2Fimg%2Fsubstack_wordmark.black.png

130 ms

bundle.es5.min.js

bundle.es5.min.js

30 ms

datadog-rum.js

datadog-rum.js

18 ms

Accessibility Review

implementingquantlib.com accessibility score

75

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

Links do not have a discernible name

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

implementingquantlib.com best practices score

83

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

High

Browser errors were logged to the console

SEO Factors

implementingquantlib.com SEO score

100

Search Engine Optimization Advices

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

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Implementingquantlib.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 Implementingquantlib.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.

Social Sharing Optimization

implementingquantlib.com

Open Graph data is detected on the main page of Implementing Quant Lib. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: