First visit

CO2 0.734g

SIZE 2.31 MB

Return visit

CO2 0.119g

SIZE 382.4 KB

Overall this web page has been graded C 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

3

50.94 KB

0.016g

Stylesheet

23

125.97 KB

0.039g

Script

34

870.52 KB

0.270g

Image

16

934.72 KB

0.290g

Font

10

349.94 KB

0.109g

Other

1

695 B

0.000g

XHR

2

31.81 KB

0.010g

History

Date

CO2

Size

27.Oct.2023

0.734g

2.31 MB

11.Apr.2023

1.196g

1.58 MB

11.Apr.2023

1.895g

2.5 MB

This website has been tested 3 times**


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Core Web Vitals

Max Potential First Input Delay


60 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


1.4 s

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

Opportunities

JavaScript execution time


1.0 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


1.6 s

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

Reduce unused CSS


Potential savings of 83 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 2,365 KiB

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

Serve images in next-gen formats


Potential savings of 135 KiB

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

Speed Index


1.2 s

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

First Contentful Paint


0.5 s

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

Time to Interactive


1.6 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.

Reduce unused JavaScript


Potential savings of 296 KiB

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

Serve static assets with an efficient cache policy


60 resources found

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

Initial server response time was short


Root document took 10 ms

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

Properly size images


Potential savings of 236 KiB

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

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.

First Meaningful Paint


0.6 s

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

Server Backend Latencies


140 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.

Avoids an excessive DOM size


595 elements

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

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