First visit

CO2 0.167g

SIZE 538.22 KB

Return visit

CO2 0.004g

SIZE 12.03 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

2

12 KB

0.004g

Script

6

49.19 KB

0.015g

Image

10

201.8 KB

0.063g

Other

6

70.71 KB

0.022g

Stylesheet

13

37.45 KB

0.012g

Font

4

58.34 KB

0.018g

Fetch

10

103.75 KB

0.032g

XHR

42

4.97 KB

0.002g

History

Date

CO2

Size

01.Apr.2024

0.167g

538.22 KB

11.Dec.2023

0.056g

180.67 KB

This website has been tested 2 times**


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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


0.047

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

Largest Contentful Paint


1.1 s

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

Opportunities

Time to Interactive


0.5 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


1 resource found

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

Network Round Trip Times


100 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.

First Contentful Paint


0.5 s

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

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 110 ms

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

Speed Index


0.8 s

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

Avoids an excessive DOM size


200 elements

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

First Meaningful Paint


0.5 s

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

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.

Server Backend Latencies


390 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 enormous network payloads


Total size was 538 KiB

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

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