First visit

CO2 0.644g

SIZE 1.71 MB

Return visit

CO2 0.190g

SIZE 518.53 KB

Overall this web page has been graded D when it comes to its carbon footprint

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

48.75 KB

0.018g

Stylesheet

6

24.43 KB

0.009g

Image

19

1.21 MB

0.454g

Script

11

155.92 KB

0.057g

Font

3

289.43 KB

0.106g

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


0.44

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

Largest Contentful Paint


1.1 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.

Speed Index


2.0 s

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

Properly size images


Potential savings of 339 KiB

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

Server Backend Latencies


0 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.

JavaScript execution time


0.3 s

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

Reduce initial server response time


Root document took 1,920 ms

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

Total Blocking Time


10 ms

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

Network Round Trip Times


0 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 unused JavaScript


Potential savings of 74 KiB

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

First Contentful Paint


0.4 s

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

Avoid an excessive DOM size


1,495 elements

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

Minimizes main-thread work


1.0 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 1,755 KiB

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

Serve static assets with an efficient cache policy


20 resources found

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

Switch to green hosting


One of the easiest things to do that instantly reduces your impact.

Notes

* These are assets not hosted on the same domain e.g. tracking scripts, iframe embeds, or files hosted on a CDN.

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