First visit
CO2 0.071g
SIZE 193.35 KB
Return visit
CO2 0.007g
SIZE 17.96 KB
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
17.96 KB
0.007g
Font
2
112.03 KB
0.041g
Script
5
12.75 KB
0.005g
Stylesheet
1
15.42 KB
0.006g
Other
4
4.13 KB
0.002g
Image
10
29.57 KB
0.011g
Fetch
1
795 B
0.000g
Preflight
1
742 B
0.000g
History
Date
CO2
Size
05.Mar.2026
0.071g
193.35 KB
19.Sep.2025
0.071g
193.85 KB
13.Aug.2025
0.078g
213.36 KB
08.Aug.2025
0.078g
213.27 KB
01.Jul.2025
0.141g
383.67 KB
27.Mar.2024
0.145g
395.33 KB
26.Mar.2024
0.143g
390.79 KB
15.Mar.2024
0.148g
402.74 KB
15.Mar.2024
0.148g
403.89 KB
15.Mar.2024
0.151g
411.42 KB
13.Mar.2024
0.151g
412.88 KB
This website has been tested 39 times**
Previous 10 test results are displayed above.
Core Web Vitals
Max Potential First Input Delay
20 ms
The maximum potential First Input Delay that your users could experience is the duration of the longest task.
Learn more about the Maximum Potential First Input Delay metric
Cumulative Layout Shift
0.009
Cumulative Layout Shift measures the movement of visible elements within the viewport.
Largest Contentful Paint
0.5 s
Largest Contentful Paint marks the time at which the largest text or image is painted.
Opportunities
Avoids enormous network payloads
Total size was 193 KiB
Large network payloads cost users real money and are highly correlated with long load times.
Time to Interactive
0.5 s
Time to Interactive is the amount of time it takes for the page to become fully interactive.
Initial server response time was short
Root document took 0 ms
Keep the server response time for the main document short because all other requests depend on it.
JavaScript execution time
0.0 s
Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this.
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.
Minimizes main-thread work
0.5 s
Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this.
Speed Index
0.4 s
Speed Index shows how quickly the contents of a page are visibly populated.
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.
First Contentful Paint
0.3 s
First Contentful Paint marks the time at which the first text or image is painted.
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.
** 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: