First visit

CO2 0.195g

SIZE 531.36 KB

Return visit

CO2 0.006g

SIZE 16.39 KB

Overall this web page has been graded B 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

Other

1

348 B

0.000g

Document

2

16.36 KB

0.006g

Font

5

70.71 KB

0.026g

Script

7

65.26 KB

0.024g

Image

12

141.52 KB

0.052g

Stylesheet

6

9.62 KB

0.004g

XHR

98

373 B

0.000g

Fetch

6

227.19 KB

0.083g

History

Date

CO2

Size

30.Jul.2025

0.195g

531.36 KB

01.Apr.2024

0.167g

538.22 KB

11.Dec.2023

0.056g

180.67 KB

This website has been tested 3 times**

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


0.005

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

Largest Contentful Paint


0.9 s

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

Opportunities

Avoids an excessive DOM size


274 elements

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

First Contentful Paint


0.5 s

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

Serve static assets with an efficient cache policy


1 resource found

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

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.

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.

Initial server response time was short


Root document took 180 ms

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

Avoids enormous network payloads


Total size was 531 KiB

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

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.

Time to Interactive


0.9 s

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

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.

Avoid multiple page redirects


Est savings of 230 ms

Redirects introduce additional delays before the page can be loaded.

Speed Index


0.9 s

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

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