First visit
CO2 0.072g
SIZE 231.08 KB
Return visit
CO2 0.008g
SIZE 26.53 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
13.93 KB
0.004g
Font
3
69.93 KB
0.022g
Stylesheet
1
10.81 KB
0.003g
Image
7
42.99 KB
0.013g
Script
10
90.3 KB
0.028g
XHR
3
3.13 KB
0.001g
History
Date
CO2
Size
20.Aug.2025
0.072g
231.08 KB
19.Aug.2025
0.072g
231.25 KB
13.Aug.2025
0.072g
230.58 KB
02.Aug.2025
0.072g
231.07 KB
04.Jul.2025
0.072g
231.55 KB
01.Jul.2025
0.086g
276.23 KB
17.Jun.2025
0.084g
269.87 KB
17.Jun.2025
0.071g
230.12 KB
12.Apr.2024
1.446g
3.85 MB
This website has been tested 9 times**
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
Cumulative Layout Shift
0.001
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
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.
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 initial server response time
Root document took 1,400 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.
Minimizes main-thread work
0.4 s
Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this.
Time to Interactive
0.5 s
Time to Interactive is the amount of time it takes for the page to become fully interactive.
First Contentful Paint
0.3 s
First Contentful Paint marks the time at which the first text or image is painted.
Avoids enormous network payloads
Total size was 231 KiB
Large network payloads cost users real money and are highly correlated with long load times.
Speed Index
1.3 s
Speed Index shows how quickly the contents of a page are visibly populated.
Serve static assets with an efficient cache policy
3 resources found
A long cache lifetime can speed up repeat visits to your page.
Avoids an excessive DOM size
537 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: