First visit
CO2 6.330g
SIZE 8.34 MB
Return visit
CO2 0.481g
SIZE 648.56 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
Image
12
7.43 MB
5.641g
Script
8
517.88 KB
0.384g
Font
3
231.23 KB
0.171g
Other
12
87.11 KB
0.065g
Media
1
47.28 KB
0.035g
Stylesheet
2
25.52 KB
0.019g
Document
1
21.62 KB
0.016g
History
Date
CO2
Size
22.Sep.2022
6.330g
8.34 MB
15.Sep.2022
6.631g
8.74 MB
This website has been tested 2 times**
Core Web Vitals
Max Potential First Input Delay
180 ms
The maximum potential First Input Delay that your users could experience is the duration of the longest task.
Cumulative Layout Shift
0.129
Cumulative Layout Shift measures the movement of visible elements within the viewport.
Largest Contentful Paint
4.3 s
Largest Contentful Paint marks the time at which the largest text or image is painted.
Opportunities
Avoids an excessive DOM size
517 elements
A large DOM will increase memory usage, cause longer style calculations, and produce costly layout reflows
Efficiently encode images
Potential savings of 745 KiB
Optimized images load faster and consume less cellular data.
Total Blocking Time
120 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds.
Speed Index
2.1 s
Speed Index shows how quickly the contents of a page are visibly populated.
Properly size images
Potential savings of 5,195 KiB
Serve images that are appropriately-sized to save cellular data and improve load time.
Initial server response time was short
Root document took 590 ms
Keep the server response time for the main document short because all other requests depend on it.
Avoid enormous network payloads
Total size was 8,543 KiB
Large network payloads cost users real money and are highly correlated with long load times.
Avoid serving legacy JavaScript to modern browsers
Potential savings of 17 KiB
Polyfills and transforms enable legacy browsers to use new JavaScript features. However, many aren't necessary for modern browsers. For your bundled JavaScript, adopt a modern script deployment strategy using module/nomodule feature detection to reduce the amount of code shipped to modern browsers, while retaining support for legacy browsers.
Serve static assets with an efficient cache policy
11 resources found
A long cache lifetime can speed up repeat visits to your page.
First Meaningful Paint
0.5 s
First Meaningful Paint measures when the primary content of a page is visible.
Time to Interactive
1.7 s
Time to interactive is the amount of time it takes for the page to become fully interactive.
Reduce unused CSS
Potential savings of 18 KiB
Reduce unused rules from stylesheets and defer CSS not used for above-the-fold content to decrease bytes consumed by network activity.
Reduce unused JavaScript
Potential savings of 287 KiB
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity.
First Contentful Paint
0.5 s
First Contentful Paint marks the time at which the first text or image is painted.
Eliminate render-blocking resources
Potential savings of 220 ms
Resources are blocking the first paint of your page. Consider delivering critical JS/CSS inline and deferring all non-critical JS/styles.
Minify CSS
Potential savings of 10 KiB
Minifying CSS files can reduce network payload sizes.
Enable text compression
Potential savings of 58 KiB
Text-based resources should be served with compression (gzip, deflate or brotli) to minimize total network bytes.
Minimizes main-thread work
1.2 s
Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this.
JavaScript execution time
0.2 s
Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this.
Serve images in next-gen formats
Potential savings of 4,638 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: