First visit

CO2 0.244g

SIZE 785.66 KB

Return visit

CO2 0.242g

SIZE 780.62 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

55.25 KB

0.017g

Stylesheet

17

83.48 KB

0.026g

Script

3

120.21 KB

0.037g

Image

11

354.99 KB

0.110g

Font

4

167.25 KB

0.052g

XHR

1

4.49 KB

0.001g

History

Date

CO2

Size

15.Oct.2023

0.244g

785.66 KB

15.Oct.2023

0.244g

785.66 KB

This website has been tested 2 times**

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


0.424

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

Properly size images


Potential savings of 176 KiB

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

Minimizes main-thread work


0.4 s

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

Server Backend Latencies


10 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.

Serve static assets with an efficient cache policy


35 resources found

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

First Contentful Paint


0.6 s

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

First Meaningful Paint


0.6 s

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

Avoid an excessive DOM size


1,401 elements

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

Total Blocking Time


0 ms

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

Avoids enormous network payloads


Total size was 786 KiB

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

Time to Interactive


0.8 s

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

Speed Index


1.1 s

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

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.

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.

Reduce unused JavaScript


Potential savings of 61 KiB

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

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.

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