First visit
CO2 0.130g
SIZE 419.55 KB
Return visit
CO2 0.016g
SIZE 51.49 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
48.75 KB
0.015g
Stylesheet
14
23.02 KB
0.007g
Script
3
26.58 KB
0.008g
Image
6
183.16 KB
0.057g
Font
6
137.22 KB
0.043g
XHR
1
846 B
0.000g
History
Date
CO2
Size
01.Mar.2025
0.130g
419.55 KB
08.Apr.2024
0.208g
566.47 KB
08.Apr.2024
0.208g
566.47 KB
This website has been tested 3 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
0.8 s
Largest Contentful Paint marks the time at which the largest text or image is painted.
Opportunities
Reduce initial server response time
Root document took 1,490 ms
Keep the server response time for the main document short because all other requests depend on it.
First Contentful Paint
0.6 s
First Contentful Paint marks the time at which the first text or image is painted.
Serve images in next-gen formats
Potential savings of 106 KiB
Image formats like WebP and AVIF often provide better compression than PNG or JPEG, which means faster downloads and less data consumption.
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.
Properly size images
Potential savings of 132 KiB
Serve images that are appropriately-sized to save cellular data and improve load time.
Time to Interactive
0.8 s
Time to Interactive is the amount of time it takes for the page to become fully interactive.
Speed Index
1.3 s
Speed Index shows how quickly the contents of a page are visibly populated.
Avoids an excessive DOM size
480 elements
A large DOM will increase memory usage, cause longer style calculations, and produce costly layout reflows
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.
Preload Largest Contentful Paint image
Potential savings of 10 ms
If the LCP element is dynamically added to the page, you should preload the image in order to improve LCP.
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.
Avoids enormous network payloads
Total size was 420 KiB
Large network payloads cost users real money and are highly correlated with long load times.
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.
Serve static assets with an efficient cache policy
4 resources found
A long cache lifetime can speed up repeat visits to your page.
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: