Tools & Wizards About Us
highfrequency.herokuapp.com screenshot

Report Summary

  • 38

    Performance

    Renders faster than
    57% of other websites

  • 86

    Accessibility

    Visual factors better than
    that of 61% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 62

    SEO

    Google-friendlier than
    23% of websites

highfrequency.herokuapp.com

Highfrequency: Toolkit for the analysis of highfrequency financial data in R.

Page Load Speed

4.6 sec in total

First Response

21 ms

Resources Loaded

381 ms

Page Rendered

4.2 sec

highfrequency.herokuapp.com screenshot

About Website

Visit highfrequency.herokuapp.com now to see the best up-to-date Highfrequency Herokuapp content for United States and also check out these interesting facts you probably never knew about highfrequency.herokuapp.com

The highfrequency R package is a toolkit for the analysis of highfrequency financial data in R, based on the former RTAQ and realized R packages.

Visit highfrequency.herokuapp.com

Key Findings

We analyzed Highfrequency.herokuapp.com page load time and found that the first response time was 21 ms and then it took 4.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.

Performance Metrics

highfrequency.herokuapp.com performance score

38

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.7 s

30/100

10%

LCP (Largest Contentful Paint)

Value4.0 s

50/100

25%

SI (Speed Index)

Value13.3 s

2/100

10%

TBT (Total Blocking Time)

Value2,350 ms

5/100

30%

CLS (Cumulative Layout Shift)

Value0.002

100/100

15%

TTI (Time to Interactive)

Value6.8 s

55/100

10%

Network Requests Diagram

highfrequency.herokuapp.com

21 ms

bootstrap-responsive.css

8 ms

bootstrap.min.css

48 ms

bootstrap.css

38 ms

jquery.min.js

10 ms

Our browser made a total of 16 requests to load all elements on the main page. We found that 63% of them (10 requests) were addressed to the original Highfrequency.herokuapp.com, 13% (2 requests) were made to Google-analytics.com and 6% (1 request) were made to Ajax.googleapis.com. The less responsive or slowest element that took the longest time to load (174 ms) relates to the external source Google-analytics.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 426.1 kB (47%)

Content Size

903.2 kB

After Optimization

477.1 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Highfrequency.herokuapp.com main page is 903.2 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. 40% of websites need less resources to load. Images take 410.0 kB which makes up the majority of the site volume.

HTML Optimization

-77%

Potential reduce by 78.4 kB

  • Original 101.4 kB
  • After minification 99.3 kB
  • After compression 23.0 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 78.4 kB or 77% of the original size.

Image Optimization

-14%

Potential reduce by 59.0 kB

  • Original 410.0 kB
  • After minification 351.0 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. Obviously, Highfrequency Herokuapp needs image optimization as it can save up to 59.0 kB or 14% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-51%

Potential reduce by 67.5 kB

  • Original 132.8 kB
  • After minification 107.5 kB
  • After compression 65.3 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 67.5 kB or 51% of the original size.

CSS Optimization

-85%

Potential reduce by 221.2 kB

  • Original 258.9 kB
  • After minification 229.4 kB
  • After compression 37.7 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. Highfrequency.herokuapp.com needs all CSS files to be minified and compressed as it can save up to 221.2 kB or 85% of the original size.

Requests Breakdown

Number of requests can be reduced by 7 (50%)

Requests Now

14

After Optimization

7

  • Images
  • JavaScript
  • CSS

The browser has sent 14 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Highfrequency Herokuapp. 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 from 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

highfrequency.herokuapp.com

highfrequency.herokuapp.com

21 ms

bootstrap-responsive.css

bootstrap-responsive.css

8 ms

bootstrap.min.css

bootstrap.min.css

48 ms

bootstrap.css

bootstrap.css

38 ms

jquery.min.js

jquery.min.js

10 ms

jquery-latest.js

jquery-latest.js

10 ms

bootstrap.min.js

bootstrap.min.js

33 ms

bootstrap.js

bootstrap.js

34 ms

css

css

44 ms

ga.js

ga.js

174 ms

wild_oliva.png

wild_oliva.png

173 ms

R_highfrequency_intraday_periodicity.png

R_highfrequency_intraday_periodicity.png

25 ms

R_highfrequency_har_model_corsi.png

R_highfrequency_har_model_corsi.png

33 ms

heavy_model_sheppard.png

heavy_model_sheppard.png

24 ms

ieVw2Y1fKWmIO-fUDV1AK0Ie.woff

ieVw2Y1fKWmIO-fUDV1AK0Ie.woff

36 ms

__utm.gif

__utm.gif

12 ms

Accessibility Review

highfrequency.herokuapp.com accessibility score

86

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

highfrequency.herokuapp.com best practices score

83

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

highfrequency.herokuapp.com SEO score

62

Search Engine Optimization Advices

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

Links are not crawlable

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    N/A

  • Encoding

    US-ASCII

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Highfrequency.herokuapp.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 Highfrequency.herokuapp.com main page’s claimed encoding is us-ascii. 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

highfrequency.herokuapp.com

Open Graph description is not detected on the main page of Highfrequency Herokuapp. 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: