First visit

CO2 0.133g

SIZE 427.15 KB

Return visit

CO2 0.052g

SIZE 169.03 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

Other

1

299 B

0.000g

Document

1

8.73 KB

0.003g

Script

6

162.68 KB

0.050g

Stylesheet

2

5.04 KB

0.002g

Image

21

163.39 KB

0.051g

Fetch

1

395 B

0.000g

Font

4

86.42 KB

0.027g

XHR

1

222 B

0.000g

History

Date

CO2

Size

09.Aug.2024

0.133g

427.15 KB

22.Mar.2023

0.308g

415.19 KB

27.Jan.2023

10.652g

12.72 MB

This website has been tested 3 times**

Core Web Vitals

Max Potential First Input Delay


100 ms

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

Cumulative Layout Shift


0.378

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

Avoids enormous network payloads


Total size was 427 KiB

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

Speed Index


1.1 s

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

Avoid multiple page redirects


Potential savings of 230 ms

Redirects introduce additional delays before the page can be loaded.

Server Backend Latencies


20 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.

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.

Avoids an excessive DOM size


318 elements

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

Time to Interactive


1.2 s

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

Eliminate render-blocking resources


Potential savings of 450 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 JavaScript


Potential savings of 68 KiB

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

First Meaningful Paint


0.9 s

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

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.

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.

First Contentful Paint


0.9 s

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

JavaScript execution time


0.3 s

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

Total Blocking Time


70 ms

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

Serve static assets with an efficient cache policy


26 resources found

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

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