First visit
CO2 0.696g
SIZE 2.19 MB
Return visit
CO2 0.007g
SIZE 23.67 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
18.79 KB
0.006g
Stylesheet
4
49.89 KB
0.015g
Script
18
727.07 KB
0.226g
Image
31
1.05 MB
0.333g
Fetch
3
1.57 KB
0.000g
Font
2
371.55 KB
0.115g
History
Date
CO2
Size
04.Jun.2025
0.696g
2.19 MB
04.Jun.2025
0.697g
2.19 MB
This website has been tested 2 times**
Core Web Vitals
Max Potential First Input Delay
140 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
0.519
Cumulative Layout Shift measures the movement of visible elements within the viewport.
Largest Contentful Paint
1.7 s
Largest Contentful Paint marks the time at which the largest text or image is painted.
Opportunities
JavaScript execution time
0.6 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
1.7 s
Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this.
Properly size images
Est savings of 525 KiB
Serve images that are appropriately-sized to save cellular data and improve load time.
Defer offscreen images
Est savings of 74 KiB
Consider lazy-loading offscreen and hidden images after all critical resources have finished loading to lower time to interactive.
Eliminate render-blocking resources
Est savings of 200 ms
Resources are blocking the first paint of your page. Consider delivering critical JS/CSS inline and deferring all non-critical JS/styles.
Time to Interactive
2.1 s
Time to Interactive is the amount of time it takes for the page to become fully interactive.
Reduce unused CSS
Est savings of 34 KiB
Reduce unused rules from stylesheets and defer CSS not used for above-the-fold content to decrease bytes consumed by network activity.
Minify JavaScript
Est savings of 34 KiB
Minifying JavaScript files can reduce payload sizes and script parse time.
Avoids enormous network payloads
Total size was 2,244 KiB
Large network payloads cost users real money and are highly correlated with long load times.
Serve static assets with an efficient cache policy
2 resources found
A long cache lifetime can speed up repeat visits to your page.
Avoids an excessive DOM size
661 elements
A large DOM will increase memory usage, cause longer style calculations, and produce costly layout reflows
Server Backend Latencies
10 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
40 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.
Initial server response time was short
Root document took 190 ms
Keep the server response time for the main document short because all other requests depend on it.
First Contentful Paint
0.9 s
First Contentful Paint marks the time at which the first text or image is painted.
Total Blocking Time
80 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds.
Speed Index
2.2 s
Speed Index shows how quickly the contents of a page are visibly populated.
Reduce unused JavaScript
Est savings of 341 KiB
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity.
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: