First visit

CO2 6.539g

SIZE 20.58 MB

Return visit

CO2 0.030g

SIZE 96.66 KB

Overall this web page has been graded F 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

24.44 KB

0.008g

Stylesheet

1

53.12 KB

0.016g

Image

198

10.87 MB

3.454g

Script

11

1.02 MB

0.323g

Font

6

178.14 KB

0.055g

Other

1

414 B

0.000g

Preflight

3

1.14 KB

0.000g

XHR

3

2.43 KB

0.001g

Fetch

11

1.49 MB

0.473g

Media

20

6.95 MB

2.208g

History

Date

CO2

Size

19.Apr.2024

6.539g

20.58 MB

11.Jan.2024

7.330g

23.07 MB

This website has been tested 2 times**

Core Web Vitals

Max Potential First Input Delay


220 ms

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

Cumulative Layout Shift


1.006

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

Largest Contentful Paint


3.0 s

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

Opportunities

First Contentful Paint


0.8 s

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

Properly size images


Potential savings of 1,618 KiB

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

Avoid enormous network payloads


Total size was 21,073 KiB

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

Serve static assets with an efficient cache policy


6 resources found

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

Initial server response time was short


Root document took 470 ms

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

Speed Index


3.1 s

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

Reduce JavaScript execution time


2.4 s

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

Eliminate render-blocking resources


Potential savings of 30 ms

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

First Meaningful Paint


0.8 s

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

Minimize main-thread work


4.6 s

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

Time to Interactive


4.4 s

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

Serve images in next-gen formats


Potential savings of 872 KiB

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

Network Round Trip Times


20 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.

Avoid an excessive DOM size


1,775 elements

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

Efficiently encode images


Potential savings of 20 KiB

Optimized images load faster and consume less cellular data.

Reduce unused CSS


Potential savings of 35 KiB

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

Enable text compression


Potential savings of 124 KiB

Text-based resources should be served with compression (gzip, deflate or brotli) to minimize total network bytes.

Total Blocking Time


710 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 460 KiB

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

Defer offscreen images


Potential savings of 259 KiB

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

Server Backend Latencies


610 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.

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