First visit

CO2 1.976g

SIZE 5.26 MB

Return visit

CO2 0.450g

SIZE 1.2 MB

Overall this web page has been graded F when it comes to its carbon footprint

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

12.15 KB

0.004g

Script

12

742.51 KB

0.272g

Font

2

110.35 KB

0.040g

Stylesheet

2

79.6 KB

0.029g

Image

9

685.4 KB

0.251g

XHR

3

12.8 KB

0.005g

Other

1

4.86 KB

0.002g

Media

1

3.58 MB

1.344g

Fetch

7

76.13 KB

0.028g

History

Date

CO2

Size

03.Apr.2025

1.976g

5.26 MB

28.Feb.2024

0.820g

2.18 MB

19.May.2022

1.290g

1.54 MB

This website has been tested 3 times**

Core Web Vitals

Max Potential First Input Delay


150 ms

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

Cumulative Layout Shift


0.018

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

Largest Contentful Paint


1.2 s

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

Opportunities

Server Backend Latencies


40 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.

Total Blocking Time


90 ms

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

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.

Avoid enormous network payloads


Total size was 5,387 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.

Speed Index


0.9 s

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

Serve images in next-gen formats


Potential savings of 178 KiB

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

Eliminate render-blocking resources


Potential savings of 180 ms

Resources are blocking the first paint of your page. Consider delivering critical JS/CSS inline and deferring all non-critical JS/styles.

Avoids an excessive DOM size


681 elements

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

Reduce unused JavaScript


Potential savings of 272 KiB

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

Reduce unused CSS


Potential savings of 92 KiB

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

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.

Serve static assets with an efficient cache policy


7 resources found

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

Time to Interactive


1.9 s

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

JavaScript execution time


0.5 s

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

Minimizes main-thread work


1.0 s

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

Switch to green hosting


One of the easiest things to do that instantly reduces your impact.

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