First visit
CO2 2.807g
SIZE 3.35 MB
Return visit
CO2 1.842g
SIZE 2.2 MB
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
Font
9
798.73 KB
0.653g
Document
1
794.55 KB
0.650g
Stylesheet
17
707.32 KB
0.578g
Script
23
689.31 KB
0.564g
Image
7
442.67 KB
0.362g
Other
2
709 B
0.001g
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.
Cumulative Layout Shift
1.191
Cumulative Layout Shift measures the movement of visible elements within the viewport.
Largest Contentful Paint
3.9 s
Largest Contentful Paint marks the time at which the largest text or image is painted.
Opportunities
Total Blocking Time
40 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
Potential savings of 213 KiB
Image formats like WebP and AVIF often provide better compression than PNG or JPEG, which means faster downloads and less data consumption.
Reduce unused JavaScript
Potential savings of 487 KiB
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity.
Enable text compression
Potential savings of 1,554 KiB
Text-based resources should be served with compression (gzip, deflate or brotli) to minimize total network bytes.
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 static assets with an efficient cache policy
25 resources found
A long cache lifetime can speed up repeat visits to your page.
First Contentful Paint
2.6 s
First Contentful Paint marks the time at which the first text or image is painted.
Preload Largest Contentful Paint image
Potential savings of 190 ms
Preload the image used by the LCP element in order to improve your LCP time.
Reduce unused CSS
Potential savings of 626 KiB
Reduce unused rules from stylesheets and defer CSS not used for above-the-fold content to decrease bytes consumed by network activity.
Properly size images
Potential savings of 97 KiB
Serve images that are appropriately-sized to save cellular data and improve load time.
Speed Index
2.9 s
Speed Index shows how quickly the contents of a page are visibly populated.
First Meaningful Paint
2.7 s
First Meaningful Paint measures when the primary content of a page is visible.
Minimizes main-thread work
1.3 s
Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this.
Eliminate render-blocking resources
Potential savings of 2,050 ms
Resources are blocking the first paint of your page. Consider delivering critical JS/CSS inline and deferring all non-critical JS/styles.
Efficiently encode images
Potential savings of 46 KiB
Optimized images load faster and consume less cellular data.
Reduce initial server response time
Root document took 1,090 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 3,433 KiB
Large network payloads cost users real money and are highly correlated with long load times.
Time to Interactive
4.3 s
Time to interactive is the amount of time it takes for the page to become fully interactive.
Avoid an excessive DOM size
5,292 elements
A large DOM will increase memory usage, cause longer style calculations, and produce costly layout reflows
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.
These measurements are for each new visitor, for returning visitors the footprint would be lower based on caching mechanisms.
Our brackets for the ratings: