First visit

CO2 0.092g

SIZE 295.76 KB

Return visit

CO2 0.017g

SIZE 55.58 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

31.47 KB

0.010g

Stylesheet

3

56.96 KB

0.018g

Script

6

103.21 KB

0.032g

Image

15

96.87 KB

0.030g

Fetch

1

971 B

0.000g

XHR

2

6.3 KB

0.002g

Core Web Vitals

Max Potential First Input Delay


90 ms

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

Largest Contentful Paint


0.5 s

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

Opportunities

Speed Index


0.8 s

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

Total Blocking Time


20 ms

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

Serve static assets with an efficient cache policy


17 resources found

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

Avoid an excessive DOM size


1,542 elements

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

First Contentful Paint


0.4 s

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

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.

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.

Initial server response time was short


Root document took 140 ms

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

Time to Interactive


0.6 s

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

Avoids enormous network payloads


Total size was 296 KiB

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

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.

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.

Reduce unused JavaScript


Potential savings of 56 KiB

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

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