Tools & Wizards About Us
calc3d.com screenshot

Report Summary

  • 54

    Performance

    Renders faster than
    72% of other websites

  • 59

    Accessibility

    Visual factors better than
    that of 26% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    19% of websites

  • 69

    SEO

    Google-friendlier than
    28% of websites

calc3d.com

Calculator for vectors, matrices, complex number, quaternion, coordinates, intersections, plotting

Page Load Speed

1.7 sec in total

First Response

320 ms

Resources Loaded

1.2 sec

Page Rendered

204 ms

calc3d.com screenshot

About Website

Visit calc3d.com now to see the best up-to-date Calc 3 D content for Germany and also check out these interesting facts you probably never knew about calc3d.com

The collection of mathematical tools handles vectors, matrices, complex number, quaternion, coordinates, intersections and function plotting (polar plot,2D,3D). Statistic, dataanalysis, FFT, best fit.

Visit calc3d.com

Key Findings

We analyzed Calc3d.com page load time and found that the first response time was 320 ms and then it took 1.4 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 25% of websites can load faster.

Performance Metrics

calc3d.com performance score

54

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.3 s

98/100

10%

LCP (Largest Contentful Paint)

Value1.6 s

99/100

25%

SI (Speed Index)

Value6.1 s

45/100

10%

TBT (Total Blocking Time)

Value15,940 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.003

100/100

15%

TTI (Time to Interactive)

Value21.9 s

1/100

10%

Network Requests Diagram

calc3d.com

320 ms

tdemo.js

114 ms

calc3d.css

193 ms

show_ads.js

17 ms

left.jpg

161 ms

Our browser made a total of 28 requests to load all elements on the main page. We found that 50% of them (14 requests) were addressed to the original Calc3d.com, 18% (5 requests) were made to Googleads.g.doubleclick.net and 14% (4 requests) were made to Pagead2.googlesyndication.com. The less responsive or slowest element that took the longest time to load (337 ms) relates to the external source Googleads.g.doubleclick.net.

Page Optimization Overview & Recommendations

Page size can be reduced by 18.7 kB (21%)

Content Size

90.7 kB

After Optimization

72.1 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Calc3d.com main page is 90.7 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. 40% of websites need less resources to load. Images take 57.4 kB which makes up the majority of the site volume.

HTML Optimization

-77%

Potential reduce by 11.4 kB

  • Original 14.8 kB
  • After minification 14.2 kB
  • After compression 3.4 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 11.4 kB or 77% of the original size.

Image Optimization

-7%

Potential reduce by 4.2 kB

  • Original 57.4 kB
  • After minification 53.2 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. Calc 3 D images are well optimized though.

JavaScript Optimization

-6%

Potential reduce by 972 B

  • Original 16.0 kB
  • After minification 15.6 kB
  • After compression 15.0 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

-84%

Potential reduce by 2.1 kB

  • Original 2.5 kB
  • After minification 1.5 kB
  • After compression 395 B

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. Calc3d.com needs all CSS files to be minified and compressed as it can save up to 2.1 kB or 84% of the original size.

Requests Breakdown

Number of requests can be reduced by 6 (22%)

Requests Now

27

After Optimization

21

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 27 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Calc 3 D. 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 as a result speed up the page load time.

Network Requests Diagram

calc3d.com

calc3d.com

320 ms

tdemo.js

tdemo.js

114 ms

calc3d.css

calc3d.css

193 ms

show_ads.js

show_ads.js

17 ms

left.jpg

left.jpg

161 ms

gerflag.gif

gerflag.gif

253 ms

usaflag.gif

usaflag.gif

294 ms

itflag.gif

itflag.gif

293 ms

espflag.gif

espflag.gif

292 ms

peruflag.gif

peruflag.gif

293 ms

brasilflag.gif

brasilflag.gif

291 ms

ca-pub-7324182872005256.js

ca-pub-7324182872005256.js

238 ms

zrt_lookup.html

zrt_lookup.html

236 ms

show_ads_impl.js

show_ads_impl.js

79 ms

calc3d_logo.gif

calc3d_logo.gif

191 ms

linreg72_57.gif

linreg72_57.gif

237 ms

map76_41.gif

map76_41.gif

220 ms

15854.gif

15854.gif

221 ms

ads

ads

337 ms

osd.js

osd.js

82 ms

ads

ads

267 ms

ads

ads

253 ms

14335356835040511619

14335356835040511619

67 ms

abg.js

abg.js

72 ms

m_js_controller.js

m_js_controller.js

98 ms

googlelogo_color_112x36dp.png

googlelogo_color_112x36dp.png

57 ms

s

s

107 ms

x_button_blue2.png

x_button_blue2.png

109 ms

Accessibility Review

calc3d.com accessibility score

59

Accessibility Issues

ARIA

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

[aria-*] attributes do not match their roles

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

Image elements do not have [alt] attributes

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

Tables and lists

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

Impact

Issue

High

List items (<li>) are not contained within <ul> or <ol> parent elements.

Best Practices

calc3d.com best practices score

58

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

Displays images with incorrect aspect ratio

High

Serves images with low resolution

SEO Factors

calc3d.com SEO score

69

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

Image elements do not have [alt] attributes

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    N/A

  • Encoding

    ISO-8859-1

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Calc3d.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 Calc3d.com 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

calc3d.com

Open Graph description is not detected on the main page of Calc 3 D. 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: