First visit

CO2 6.991g

SIZE 8.35 MB

Return visit

CO2 6.989g

SIZE 8.35 MB

Overall this web page is rated as bad when it comes to its carbon footprint

Emissions calculator

40%

60%

Total: per month

This is equivalent to: Driving miles in a Tesla Model S Watching hours of Netflix (in HD)

At least trees would be needed to offset the CO2 in a year

Page breakdown

Type

Requests

Size

CO2

Image

41

4.18 MB

3.496g

Script

43

2.68 MB

2.241g

Font

17

1005.25 KB

0.822g

Stylesheet

25

389.86 KB

0.319g

Document

9

128.36 KB

0.105g

Other

13

6.68 KB

0.005g

Media

6

4.29 KB

0.004g

Third Party*

78

3.2 MB

2.681g

History

Date

CO2

Size

02.Nov.2021

6.991g

8.35 MB

28.Oct.2021

5.136g

6.13 MB

18.Oct.2021

5.286g

6.97 MB

11.Oct.2021

4.916g

6.48 MB

22.Jul.2021

7.144g

9.41 MB

28.Apr.2021

17.833g

23.5 MB

This website has been tested 6 times**


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Core Web Vitals

Max Potential First Input Delay


170 ms

The maximum potential First Input Delay that your users could experience is the duration of the longest task.

Cumulative Layout Shift


0.016

Cumulative Layout Shift measures the movement of visible elements within the viewport.

Largest Contentful Paint


2.2 s

Largest Contentful Paint marks the time at which the largest text or image is painted.

Opportunities

Uses efficient cache policy on static assets


4 resources found

A long cache lifetime can speed up repeat visits to your page.

Reduce JavaScript execution time


2.7 s

Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this.

Speed Index


3.6 s

Speed Index shows how quickly the contents of a page are visibly populated.

Reduce unused JavaScript


Potential savings of 501 KiB

Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity.

First Contentful Paint


1.2 s

First Contentful Paint marks the time at which the first text or image is painted.

First Meaningful Paint


1.4 s

First Meaningful Paint measures when the primary content of a page is visible.

Avoid enormous network payloads


Total size was 8,550 KiB

Large network payloads cost users real money and are highly correlated with long load times.

Minimize main-thread work


4.6 s

Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this.

Serve images in next-gen formats


Potential savings of 3,178 KiB

Image formats like WebP and AVIF often provide better compression than PNG or JPEG, which means faster downloads and less data consumption.

Defer offscreen images


Potential savings of 3,067 KiB

Consider lazy-loading offscreen and hidden images after all critical resources have finished loading to lower time to interactive.

Reduce unused CSS


Potential savings of 168 KiB

Reduce unused rules from stylesheets and defer CSS not used for above-the-fold content to decrease bytes consumed by network activity.

Eliminate render-blocking resources


Potential savings of 610 ms

Resources are blocking the first paint of your page. Consider delivering critical JS/CSS inline and deferring all non-critical JS/styles.

Initial server response time was short


Root document took 110 ms

Keep the server response time for the main document short because all other requests depend on it.

Total Blocking Time


340 ms

Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds.

Time to Interactive


6.8 s

Time to interactive is the amount of time it takes for the page to become fully interactive.

Avoid an excessive DOM size


1,422 elements

A large DOM will increase memory usage, cause longer style calculations, and produce costly layout reflows

Properly size images


Potential savings of 485 KiB

Serve images that are appropriately-sized to save cellular data and improve load time.

Switch to green hosting


One of the easiest things to do that instantly reduces your impact.

Notes

* These are assets not hosted on the same domain e.g. tracking scripts, iframe embeds, or files hosted on a CDN.

** This was only counted from 11.Apr.2021.

These measurements are for each new visitor, for returning visitors the footprint would be lower based on caching mechanisms.

Our brackets for the ratings:

  • Amazing: less than 0.25g

  • Great: less than 0.5g

  • Good: less than 1g

  • OK: less than 1.5g

  • Bad: above 1.5g