First visit

CO2 0.488g

SIZE 659.01 KB

Return visit

CO2 0.115g

SIZE 155.39 KB

Overall this web page has been graded C when it comes to its carbon footprint

This website is hosted using renewable energy or carbon offsets.

Find out more about grades

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

Script

14

239.77 KB

0.178g

Image

7

183.71 KB

0.136g

Font

5

136 KB

0.101g

Stylesheet

5

83.16 KB

0.062g

Document

1

14.5 KB

0.011g

Other

1

1.87 KB

0.001g

History

Date

CO2

Size

24.Nov.2022

0.488g

659.01 KB

14.Jul.2022

0.482g

650.54 KB

14.Jun.2022

0.180g

242.38 KB

This website has been tested 3 times**

Core Web Vitals

Max Potential First Input Delay


80 ms

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

Cumulative Layout Shift


0.491

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

Largest Contentful Paint


1.2 s

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

Opportunities

Minimizes main-thread work


0.5 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 49 KiB

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

Eliminate render-blocking resources


Potential savings of 540 ms

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

Reduce unused CSS


Potential savings of 71 KiB

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

First Meaningful Paint


1.0 s

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

Serve static assets with an efficient cache policy


26 resources found

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

Avoids enormous network payloads


Total size was 659 KiB

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

First Contentful Paint


1.0 s

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

Properly size images


Potential savings of 27 KiB

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

Initial server response time was short


Root document took 60 ms

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

Total Blocking Time


10 ms

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

Speed Index


1.0 s

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

Reduce unused JavaScript


Potential savings of 70 KiB

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

Time to Interactive


1.1 s

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

JavaScript execution time


0.1 s

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

Avoids an excessive DOM size


289 elements

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

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:

  • A+: less than 0.095g

  • A: less than 0.185g

  • B: less than 0.34g

  • C: less than 0.49g

  • D: less than 0.65g

  • E: less than 0.85g

  • F: above 0.85