First visit
CO2 0.050g
SIZE 159.66 KB
Return visit
CO2 0.004g
SIZE 12.11 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
11.91 KB
0.004g
Image
23
102.8 KB
0.032g
Font
2
29.4 KB
0.009g
Stylesheet
1
6.25 KB
0.002g
Script
3
6.17 KB
0.002g
XHR
3
3.12 KB
0.001g
History
Date
CO2
Size
21.Sep.2025
0.050g
159.66 KB
19.Aug.2025
0.036g
115.04 KB
19.Aug.2025
0.036g
115.22 KB
19.Aug.2025
0.036g
115.22 KB
19.Aug.2025
0.036g
115.22 KB
19.Aug.2025
0.036g
115.42 KB
18.Aug.2025
0.036g
115.11 KB
18.Aug.2025
0.036g
115.6 KB
15.Aug.2025
0.036g
115.22 KB
04.Aug.2025
0.036g
115.6 KB
03.Aug.2025
0.036g
115.59 KB
This website has been tested 26 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
Largest Contentful Paint
0.4 s
Largest Contentful Paint marks the time at which the largest text or image is painted.
Opportunities
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.
Avoids an excessive DOM size
307 elements
A large DOM will increase memory usage, cause longer style calculations, and produce costly layout reflows
Time to Interactive
0.4 s
Time to Interactive is the amount of time it takes for the page to become fully interactive.
Speed Index
0.3 s
Speed Index shows how quickly the contents of a page are visibly populated.
Serve static assets with an efficient cache policy
1 resource found
A long cache lifetime can speed up repeat visits to your page.
Minimizes main-thread work
0.1 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 160 KiB
Large network payloads cost users real money and are highly correlated with long load times.
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
0.0 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 30 ms
Keep the server response time for the main document short because all other requests depend on it.
First Contentful Paint
0.2 s
First Contentful Paint marks the time at which the first text or image is painted.
Properly size images
Est savings of 30 KiB
Serve images that are appropriately-sized to save cellular data and improve load time.
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: