First visit
CO2 1.790g
SIZE 4.77 MB
Return visit
CO2 0.064g
SIZE 173.8 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
2
1022 B
0.000g
Document
2
167.04 KB
0.061g
Stylesheet
7
96.62 KB
0.035g
Script
18
365.4 KB
0.134g
Image
239
3.53 MB
1.325g
XHR
8
10.89 KB
0.004g
Fetch
1
713 B
0.000g
Font
20
625.46 KB
0.229g
Preflight
1
671 B
0.000g
History
Date
CO2
Size
20.Aug.2025
1.790g
4.77 MB
26.Feb.2025
0.781g
2.08 MB
11.Jan.2025
0.539g
1.44 MB
11.Dec.2024
0.958g
2.55 MB
02.Dec.2024
1.484g
3.95 MB
20.Nov.2024
0.810g
2.16 MB
03.Nov.2024
0.739g
1.97 MB
21.Oct.2024
2.243g
7.06 MB
18.Oct.2024
0.602g
1.6 MB
14.Oct.2024
0.593g
1.58 MB
04.Jun.2024
0.770g
2.42 MB
This website has been tested 46 times**
Previous 10 test results are displayed above.
Core Web Vitals
Max Potential First Input Delay
60 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
0.402
Cumulative Layout Shift measures the movement of visible elements within the viewport.
Largest Contentful Paint
1.5 s
Largest Contentful Paint marks the time at which the largest text or image is painted.
Opportunities
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.
Time to Interactive
2.7 s
Time to Interactive is the amount of time it takes for the page to become fully interactive.
Avoid multiple page redirects
Est savings of 230 ms
Redirects introduce additional delays before the page can be loaded.
Avoid an excessive DOM size
2,336 elements
A large DOM will increase memory usage, cause longer style calculations, and produce costly layout reflows
JavaScript execution time
1.2 s
Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this.
Avoid enormous network payloads
Total size was 4,879 KiB
Large network payloads cost users real money and are highly correlated with long load times.
First Contentful Paint
0.9 s
First Contentful Paint marks the time at which the first text or image is painted.
Eliminate render-blocking resources
Est savings of 170 ms
Resources are blocking the first paint of your page. Consider delivering critical JS/CSS inline and deferring all non-critical JS/styles.
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.
Initial server response time was short
Root document took 130 ms
Keep the server response time for the main document short because all other requests depend on it.
Minimize main-thread work
2.4 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
26 resources found
A long cache lifetime can speed up repeat visits to your page.
Speed Index
1.7 s
Speed Index shows how quickly the contents of a page are visibly populated.
Total Blocking Time
10 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds.
Serve images in next-gen formats
Est savings of 961 KiB
Image formats like WebP and AVIF often provide better compression than PNG or JPEG, which means faster downloads and less data consumption.
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: