First visit
CO2 0.105g
SIZE 337.32 KB
Return visit
CO2 0.029g
SIZE 92.73 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
Other
1
522 B
0.000g
Document
1
22.63 KB
0.007g
Stylesheet
3
10.61 KB
0.003g
Script
12
116.2 KB
0.036g
Image
6
184.85 KB
0.057g
Fetch
1
1.3 KB
0.000g
XHR
1
1.22 KB
0.000g
History
Date
CO2
Size
21.Sep.2025
0.105g
337.32 KB
15.Aug.2025
0.113g
363.54 KB
01.Jul.2025
0.109g
351.64 KB
19.May.2025
0.332g
1.05 MB
19.May.2025
0.332g
1.05 MB
19.May.2025
0.181g
584.82 KB
20.Mar.2025
0.034g
108.09 KB
20.Mar.2025
0.460g
1.45 MB
20.Mar.2025
0.460g
1.45 MB
14.Mar.2025
0.177g
570.88 KB
11.Mar.2025
0.033g
104.77 KB
This website has been tested 92 times**
Previous 10 test results are displayed above.
Core Web Vitals
Max Potential First Input Delay
30 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
1.0 s
Largest Contentful Paint marks the time at which the largest text or image is painted.
Opportunities
Properly size images
Est savings of 138 KiB
Serve images that are appropriately-sized to save cellular data and improve load time.
Time to Interactive
1.0 s
Time to Interactive is the amount of time it takes for the page to become fully interactive.
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
0.1 s
Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this.
Avoid multiple page redirects
Est savings of 230 ms
Redirects introduce additional delays before the page can be loaded.
Speed Index
1.3 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
0.5 s
First Contentful Paint marks the time at which the first text or image is painted.
Reduce initial server response time
Root document took 750 ms
Keep the server response time for the main document short because all other requests depend on it.
Avoids enormous network payloads
Total size was 337 KiB
Large network payloads cost users real money and are highly correlated with long load times.
Serve static assets with an efficient cache policy
14 resources found
A long cache lifetime can speed up repeat visits to your page.
Minimizes main-thread work
0.3 s
Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this.
Avoids an excessive DOM size
236 elements
A large DOM will increase memory usage, cause longer style calculations, and produce costly layout reflows
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: