First visit
CO2 0.055g
SIZE 149.98 KB
Return visit
CO2 0.008g
SIZE 21.91 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
21.91 KB
0.008g
Font
2
59.08 KB
0.022g
Script
5
13.92 KB
0.005g
Stylesheet
2
21.59 KB
0.008g
Other
4
4.02 KB
0.001g
Image
12
28.05 KB
0.010g
Preflight
1
691 B
0.000g
Fetch
1
744 B
0.000g
History
Date
CO2
Size
29.Oct.2026
0.055g
149.98 KB
29.Oct.2026
0.074g
201.94 KB
24.Sep.2026
0.074g
201.03 KB
17.Sep.2026
0.075g
204.72 KB
02.Jul.2026
0.086g
233.46 KB
29.Apr.2026
0.086g
233.24 KB
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
This website has been tested 45 times**
Previous 10 test results are displayed above.
Core Web Vitals
Max Potential First Input Delay
40 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
0.001
Cumulative Layout Shift measures the movement of visible elements within the viewport.
Largest Contentful Paint
0.3 s
Largest Contentful Paint marks the time at which the largest text or image is painted.
Opportunities
Render-blocking requests
Est savings of 120 ms
Requests are blocking the page’s initial render, which may delay LCP.
Deferring or inlining can move these network requests out of the critical path.
Speed Index
0.6 s
Speed Index shows how quickly the contents of a page are visibly populated.
Minimizes main-thread work
0.2 s
Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this.
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.
Avoids enormous network payloads
Total size was 150 KiB
Large network payloads cost users real money and are highly correlated with long load times.
First Contentful Paint
0.3 s
First Contentful Paint marks the time at which the first text or image is painted.
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.
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.
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.
Time to Interactive
0.3 s
Time to Interactive is the amount of time it takes for the page to become fully interactive.
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: