First visit

CO2 0.149g

SIZE 480.98 KB

Return visit

CO2 0.006g

SIZE 17.71 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

14.15 KB

0.004g

Stylesheet

5

53 KB

0.016g

Script

12

134.81 KB

0.042g

Image

6

256.02 KB

0.079g

Font

1

22.26 KB

0.007g

Fetch

1

750 B

0.000g

History

Date

CO2

Size

16.Nov.2023

0.149g

480.98 KB

14.Nov.2023

0.149g

480.97 KB

12.Nov.2023

0.149g

481.04 KB

06.Nov.2023

0.151g

486.7 KB

02.Nov.2023

0.280g

903.42 KB

02.Nov.2023

0.280g

903.42 KB

13.Oct.2023

0.345g

1.09 MB

08.Aug.2023

0.348g

1.1 MB

09.Sep.2022

0.587g

792.11 KB

09.Sep.2022

0.597g

805.04 KB

09.Sep.2022

0.597g

805.29 KB

This website has been tested 12 times**

Previous 10 test results are displayed above.

Core Web Vitals

Max Potential First Input Delay


120 ms

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

Cumulative Layout Shift


0.002

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

Largest Contentful Paint


1.0 s

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

Opportunities

First Contentful Paint


0.8 s

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

Avoids an excessive DOM size


567 elements

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

Avoids enormous network payloads


Total size was 481 KiB

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

Eliminate render-blocking resources


Potential savings of 320 ms

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

Uses efficient cache policy on static assets


1 resource found

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

Reduce unused JavaScript


Potential savings of 49 KiB

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

Total Blocking Time


40 ms

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

Server Backend Latencies


970 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


0.7 s

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

JavaScript execution time


0.2 s

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

First Meaningful Paint


0.8 s

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

Time to Interactive


1.0 s

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

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.

Reduce unused CSS


Potential savings of 44 KiB

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

Speed Index


1.1 s

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

Network Round Trip Times


60 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.

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