First visit

CO2 0.172g

SIZE 553.43 KB

Return visit

CO2 0.104g

SIZE 333.81 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

7.59 KB

0.002g

Stylesheet

4

159.28 KB

0.049g

Script

26

281.62 KB

0.087g

Image

4

73.44 KB

0.023g

Font

3

30.47 KB

0.009g

XHR

1

1.03 KB

0.000g

History

Date

CO2

Size

22.Mar.2024

0.172g

553.43 KB

04.Nov.2022

1.143g

1.51 MB

This website has been tested 2 times**

Core Web Vitals

Max Potential First Input Delay


40 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

Time to Interactive


0.9 s

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

Efficiently encode images


Potential savings of 43 KiB

Optimized images load faster and consume less cellular data.

Serve static assets with an efficient cache policy


31 resources found

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

Eliminate render-blocking resources


Potential savings of 460 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 106 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 152 KiB

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

Avoids enormous network payloads


Total size was 553 KiB

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

Server Backend Latencies


30 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.

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.

Minimizes main-thread work


0.6 s

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

Serve images in next-gen formats


Potential savings of 62 KiB

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

Avoids an excessive DOM size


205 elements

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

First Contentful Paint


0.8 s

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

Speed Index


1.4 s

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

Reduce initial server response time


Root document took 1,080 ms

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

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


0.9 s

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

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