First visit

CO2 0.095g

SIZE 304.56 KB

Return visit

CO2 0.065g

SIZE 208.07 KB

Overall this web page has been graded A+ 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

Image

3

240.39 KB

0.075g

Font

3

49.4 KB

0.015g

Stylesheet

2

10 KB

0.003g

Document

1

3.02 KB

0.001g

Script

1

1.76 KB

0.001g

History

Date

CO2

Size

07.Aug.2023

0.095g

304.56 KB

23.Jul.2023

0.095g

304.76 KB

24.Jan.2023

0.226g

304.76 KB

24.Jan.2023

0.226g

304.74 KB

24.Jan.2023

0.226g

304.71 KB

This website has been tested 5 times**

Core Web Vitals

Max Potential First Input Delay


20 ms

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

Cumulative Layout Shift


0.029

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

Largest Contentful Paint


0.7 s

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

Opportunities

Avoids enormous network payloads


Total size was 305 KiB

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

First Contentful Paint


0.5 s

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

Time to Interactive


0.6 s

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

First Meaningful Paint


0.6 s

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

Initial server response time was short


Root document took 230 ms

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

Serve static assets with an efficient cache policy


9 resources found

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

Minimizes main-thread work


0.1 s

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

Properly size images


Potential savings of 89 KiB

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

Network Round Trip Times


0 ms

Network round trip times (RTT) have a large impact on performance. If the RTT to an origin is high, it's an indication that servers closer to the user could improve performance.

Speed Index


0.6 s

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

JavaScript execution time


0.0 s

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

Server Backend Latencies


280 ms

Server latencies can impact web performance. If the server latency of an origin is high, it's an indication the server is overloaded or has poor backend performance.

Avoids an excessive DOM size


74 elements

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

Serve images in next-gen formats


Potential savings of 117 KiB

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

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