First visit

CO2 0.215g

SIZE 691.74 KB

Return visit

CO2 0.008g

SIZE 24.78 KB

Overall this web page has been graded B 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

22.74 KB

0.007g

Script

22

133.14 KB

0.041g

Stylesheet

36

53.14 KB

0.016g

Image

16

301.67 KB

0.094g

Font

5

180.37 KB

0.056g

XHR

1

701 B

0.000g

History

Date

CO2

Size

10.Feb.2024

0.215g

691.74 KB

10.Feb.2024

0.301g

970.93 KB

16.Oct.2023

0.102g

328.88 KB

16.Oct.2023

0.475g

1.49 MB

20.Sep.2023

0.229g

736.88 KB

22.Mar.2023

0.649g

875.17 KB

13.Dec.2022

1.051g

1.38 MB

13.Dec.2022

1.051g

1.39 MB

22.Nov.2022

1.060g

1.4 MB

16.Nov.2022

0.980g

1.29 MB

03.Nov.2022

0.866g

1.14 MB

This website has been tested 17 times**

Previous 10 test results are displayed above.

Core Web Vitals

Max Potential First Input Delay


70 ms

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

Cumulative Layout Shift


0.001

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

Largest Contentful Paint


0.8 s

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

Opportunities

Time to Interactive


1.1 s

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

Total Blocking Time


10 ms

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

Avoids an excessive DOM size


703 elements

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

Reduce initial server response time


Root document took 1,530 ms

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

First Meaningful Paint


0.7 s

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

Eliminate render-blocking resources


Potential savings of 90 ms

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

Network Round Trip Times


40 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.

Server Backend Latencies


170 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.

First Contentful Paint


0.7 s

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

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.

Properly size images


Potential savings of 75 KiB

Serve images that are appropriately-sized to save cellular data and improve load time.

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 enormous network payloads


Total size was 692 KiB

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

Defer offscreen images


Potential savings of 106 KiB

Consider lazy-loading offscreen and hidden images after all critical resources have finished loading to lower time to interactive.

Speed Index


1.5 s

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

Serve static assets with an efficient cache policy


1 resource 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