Tools & Wizards About Us

Report Summary

  • 69

    Performance

    Renders faster than
    80% of other websites

  • 94

    Accessibility

    Visual factors better than
    that of 83% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 98

    SEO

    Google-friendlier than
    92% of websites

davidjaffee.com

David Jaffee - Stock Options Trader / Options Trading Coach

Page Load Speed

839 ms in total

First Response

166 ms

Resources Loaded

434 ms

Page Rendered

239 ms

About Website

Click here to check amazing David Jaffee content. Otherwise, check out these important facts you probably never knew about davidjaffee.com

David Jaffee is an options trader. A former Wall Street investment banker, David Jaffee has taught over 1,500 students to trade options. Learn options trading today!

Visit davidjaffee.com

Key Findings

We analyzed Davidjaffee.com page load time and found that the first response time was 166 ms and then it took 673 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

davidjaffee.com performance score

69

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.4 s

97/100

10%

LCP (Largest Contentful Paint)

Value1.4 s

100/100

25%

SI (Speed Index)

Value2.0 s

99/100

10%

TBT (Total Blocking Time)

Value1,660 ms

11/100

30%

CLS (Cumulative Layout Shift)

Value0.025

100/100

15%

TTI (Time to Interactive)

Value6.0 s

65/100

10%

Network Requests Diagram

davidjaffee.com

166 ms

rocket-loader.min.js

6 ms

jquery.min.js

118 ms

jquery-migrate.min.js

120 ms

imagesloaded.min.js

178 ms

Our browser made a total of 18 requests to load all elements on the main page. We found that 94% of them (17 requests) were addressed to the original Davidjaffee.com, 6% (1 request) were made to Google.com. The less responsive or slowest element that took the longest time to load (204 ms) belongs to the original domain Davidjaffee.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 100.6 kB (81%)

Content Size

124.7 kB

After Optimization

24.1 kB

  • HTML
  • JavaScript

In fact, the total size of Davidjaffee.com main page is 124.7 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. HTML takes 120.8 kB which makes up the majority of the site volume.

HTML Optimization

-83%

Potential reduce by 100.6 kB

  • Original 120.8 kB
  • After minification 105.9 kB
  • After compression 20.2 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. This page needs HTML code to be minified as it can gain 14.9 kB, 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 100.6 kB or 83% of the original size.

JavaScript Optimization

-0%

Potential reduce by 0 B

  • Original 3.9 kB
  • After minification 3.9 kB
  • After compression 3.9 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.

Requests Breakdown

Number of requests can be reduced by 16 (94%)

Requests Now

17

After Optimization

1

  • JavaScript

The browser has sent 17 CSS, Javascripts, AJAX and image requests in order to completely render the main page of David Jaffee. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 17 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

davidjaffee.com accessibility score

94

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

Links do not have a discernible name

Best Practices

davidjaffee.com 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

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

davidjaffee.com SEO score

98

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

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    EN

  • Encoding

    UTF-8

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

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