Tools & Wizards About Us

Report Summary

  • 84

    Performance

    Renders faster than
    88% of other websites

  • 89

    Accessibility

    Visual factors better than
    that of 71% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 98

    SEO

    Google-friendlier than
    92% of websites

adducive.com

Adducive, publisher of The Old-School Typewriter Algebra Workbook by Brian R. Krause

Page Load Speed

914 ms in total

First Response

37 ms

Resources Loaded

778 ms

Page Rendered

99 ms

About Website

Click here to check amazing Adducive content. Otherwise, check out these important facts you probably never knew about adducive.com

Adducive is the publisher of The Old-School Typewriter Algebra Workbook by Brian R. Krause. Based in Chandler, Arizona, U.S.A.

Visit adducive.com

Key Findings

We analyzed Adducive.com page load time and found that the first response time was 37 ms and then it took 877 ms to load all DOM resources and completely render a web page. This is quite a good result, as only 20% of websites can load faster.

Performance Metrics

adducive.com performance score

84

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.7 s

60/100

10%

LCP (Largest Contentful Paint)

Value3.7 s

57/100

25%

SI (Speed Index)

Value2.7 s

97/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.024

100/100

15%

TTI (Time to Interactive)

Value3.7 s

90/100

10%

Network Requests Diagram

adducive.com

37 ms

www.adducive.com

248 ms

css

31 ms

adducive.css

100 ms

firebase-app.js

254 ms

Our browser made a total of 13 requests to load all elements on the main page. We found that 69% of them (9 requests) were addressed to the original Adducive.com, 23% (3 requests) were made to Fonts.gstatic.com and 8% (1 request) were made to Fonts.googleapis.com. The less responsive or slowest element that took the longest time to load (254 ms) belongs to the original domain Adducive.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 8.8 kB (14%)

Content Size

63.1 kB

After Optimization

54.3 kB

  • HTML
  • Images

In fact, the total size of Adducive.com main page is 63.1 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. Images take 56.2 kB which makes up the majority of the site volume.

HTML Optimization

-60%

Potential reduce by 4.1 kB

  • Original 6.9 kB
  • After minification 6.8 kB
  • After compression 2.8 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 4.1 kB or 60% of the original size.

Image Optimization

-8%

Potential reduce by 4.7 kB

  • Original 56.2 kB
  • After minification 51.5 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. Adducive images are well optimized though.

Requests Breakdown

We found no issues to fix!

Requests Now

8

After Optimization

8

  • Images
  • JavaScript
  • CSS

The browser has sent 8 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Adducive. According to our analytics all requests are already optimized.

Network Requests Diagram

Accessibility Review

adducive.com 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.

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

adducive.com best practices score

75

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

Page has valid source maps

SEO Factors

adducive.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

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Adducive.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 Adducive.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 PARSED_DOMAIN, but there is no image specified in description. It would be a good idea for the website admin to select a nice image that can properly represent the website in Open Graph data, otherwise the first found image will be taken for this purpose and social media information block will look like this: