First visit
CO2 0.087g
SIZE 280.89 KB
Return visit
CO2 0.002g
SIZE 7.33 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
7.33 KB
0.002g
Font
2
99.3 KB
0.031g
Stylesheet
1
8.67 KB
0.003g
Image
2
137.56 KB
0.043g
Script
1
28.03 KB
0.009g
History
Date
CO2
Size
15.Aug.2025
0.087g
280.89 KB
01.Jul.2025
0.087g
280.98 KB
16.Jan.2022
0.212g
286.12 KB
13.Dec.2021
0.212g
286.27 KB
13.Dec.2021
0.212g
286.22 KB
06.Dec.2021
0.218g
294.6 KB
03.Dec.2021
0.218g
294.4 KB
This website has been tested 7 times**
Core Web Vitals
Max Potential First Input Delay
40 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
Cumulative Layout Shift measures the movement of visible elements within the viewport.
Largest Contentful Paint
0.6 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.
Avoid serving legacy JavaScript to modern browsers
Est savings of 13 KiB
Polyfills and transforms enable legacy browsers to use new JavaScript features. However, many aren't necessary for modern browsers. Consider modifying your JavaScript build process to not transpile Baseline features, unless you know you must support legacy browsers.
Learn why most sites can deploy ES6+ code without transpiling
Avoids an excessive DOM size
320 elements
A large DOM will increase memory usage, cause longer style calculations, and produce costly layout reflows
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.
Speed Index
0.5 s
Speed Index shows how quickly the contents of a page are visibly populated.
Initial server response time was short
Root document took 70 ms
Keep the server response time for the main document short because all other requests depend on it.
Time to Interactive
0.6 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 281 KiB
Large network payloads cost users real money and are highly correlated with long load times.
Properly size images
Est savings of 41 KiB
Serve images that are appropriately-sized to save cellular data and improve load time.
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.
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.
Serve images in next-gen formats
Est savings of 63 KiB
Image formats like WebP and AVIF often provide better compression than PNG or JPEG, which means faster downloads and less data consumption.
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: