First visit

CO2 0.131g

SIZE 422.09 KB

Return visit

CO2 0.010g

SIZE 33.43 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

33.4 KB

0.010g

Stylesheet

7

18.18 KB

0.006g

Script

10

271.93 KB

0.084g

Font

3

95.19 KB

0.030g

Fetch

5

3.39 KB

0.001g

History

Date

CO2

Size

09.Jul.2026

0.131g

422.09 KB

01.Jul.2026

0.131g

421.28 KB

15.May.2026

0.844g

2.65 MB

10.Sep.2025

0.837g

2.63 MB

12.Aug.2025

0.864g

2.72 MB

12.Aug.2025

0.864g

2.72 MB

12.Aug.2025

0.864g

2.72 MB

12.Aug.2025

0.865g

2.72 MB

03.Aug.2025

0.864g

2.72 MB

01.Aug.2025

0.864g

2.72 MB

01.Aug.2025

0.904g

2.84 MB

This website has been tested 29 times**

Previous 10 test results are displayed above.

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.

Cumulative Layout Shift


0.008

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

Largest Contentful Paint


0.6 s

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

Opportunities

Avoids enormous network payloads


Total size was 422 KiB

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

Minimizes main-thread work


0.6 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 50 ms

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

Server Backend Latencies


10 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.

First Contentful Paint


0.6 s

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

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


1.0 s

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

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.

Time to Interactive


0.6 s

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

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