First visit
CO2 0.034g
SIZE 93.6 KB
Return visit
CO2 0.002g
SIZE 6.02 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
417 B
0.000g
Document
1
6.02 KB
0.002g
Script
1
5.57 KB
0.002g
Stylesheet
1
12.86 KB
0.005g
Font
1
47.82 KB
0.018g
Image
1
20.93 KB
0.008g
History
Date
CO2
Size
28.Feb.2025
0.034g
93.6 KB
25.Feb.2025
0.034g
93.58 KB
This website has been tested 2 times**
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
0.001
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
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.
Reduce unused CSS
Potential savings of 11 KiB
Reduce unused rules from stylesheets and defer CSS not used for above-the-fold content to decrease bytes consumed by network activity.
Initial server response time was short
Root document took 20 ms
Keep the server response time for the main document short because all other requests depend on it.
First Contentful Paint
0.5 s
First Contentful Paint marks the time at which the first text or image is painted.
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.
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.
Speed Index
0.7 s
Speed Index shows how quickly the contents of a page are visibly populated.
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.
Avoids an excessive DOM size
121 elements
A large DOM will increase memory usage, cause longer style calculations, and produce costly layout reflows
Avoids enormous network payloads
Total size was 94 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.
Avoid multiple page redirects
Potential savings of 230 ms
Redirects introduce additional delays before the page can be loaded.
Eliminate render-blocking resources
Potential savings of 50 ms
Resources are blocking the first paint of your page. Consider delivering critical JS/CSS inline and deferring all non-critical JS/styles.
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: