First visit

CO2 0.013g

SIZE 41.84 KB

Return visit

CO2 0.003g

SIZE 9.57 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

Document

1

7.66 KB

0.002g

Stylesheet

2

19.58 KB

0.006g

Script

2

3.03 KB

0.001g

Image

2

10.87 KB

0.003g

Fetch

1

706 B

0.000g

History

Date

CO2

Size

01.Jul.2025

0.013g

41.84 KB

10.Oct.2024

0.012g

40.15 KB

12.Apr.2023

0.029g

38.97 KB

15.Nov.2021

0.026g

34.63 KB

11.Nov.2021

0.026g

34.63 KB

28.Apr.2021

0.023g

30.56 KB

This website has been tested 6 times**

Core Web Vitals

Max Potential First Input Delay


40 ms

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

Largest Contentful Paint


0.3 s

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

Opportunities

Avoids an excessive DOM size


130 elements

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

First Contentful Paint


0.2 s

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

Reduce unused CSS


Est savings of 15 KiB

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

Minimizes main-thread work


0.4 s

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

Initial server response time was short


Root document took 40 ms

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

Server Backend Latencies


0 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.

Speed Index


0.5 s

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

Time to Interactive


0.3 s

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

Serve static assets with an efficient cache policy


3 resources found

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

Avoids enormous network payloads


Total size was 42 KiB

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

Network Round Trip Times


10 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.

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.

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