First visit
CO2 2.443g
SIZE 3.22 MB
Return visit
CO2 0.550g
SIZE 741.78 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
78
2.18 MB
1.656g
Script
32
635.27 KB
0.471g
Font
5
170.49 KB
0.126g
Stylesheet
21
144.9 KB
0.107g
Other
73
92.58 KB
0.069g
Document
1
17.76 KB
0.013g
Core Web Vitals
Max Potential First Input Delay
50 ms
The maximum potential First Input Delay that your users could experience is the duration of the longest task.
Cumulative Layout Shift
0.145
Cumulative Layout Shift measures the movement of visible elements within the viewport.
Largest Contentful Paint
2.6 s
Largest Contentful Paint marks the time at which the largest text or image is painted.
Opportunities
Reduce unused CSS
Potential savings of 98 KiB
Reduce unused rules from stylesheets and defer CSS not used for above-the-fold content to decrease bytes consumed by network activity.
JavaScript execution time
0.3 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 916 KiB
Image formats like WebP and AVIF often provide better compression than PNG or JPEG, which means faster downloads and less data consumption.
Avoid an excessive DOM size
1,163 elements
A large DOM will increase memory usage, cause longer style calculations, and produce costly layout reflows
Total Blocking Time
0 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds.
Time to Interactive
1.7 s
Time to interactive is the amount of time it takes for the page to become fully interactive.
Minimizes main-thread work
1.1 s
Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this.
Minify JavaScript
Potential savings of 13 KiB
Minifying JavaScript files can reduce payload sizes and script parse time.
Reduce initial server response time
Root document took 6,220 ms
Keep the server response time for the main document short because all other requests depend on it.
First Meaningful Paint
1.0 s
First Meaningful Paint measures when the primary content of a page is visible.
Efficiently encode images
Potential savings of 31 KiB
Optimized images load faster and consume less cellular data.
Minify CSS
Potential savings of 21 KiB
Minifying CSS files can reduce network payload sizes.
Reduce unused JavaScript
Potential savings of 301 KiB
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity.
Speed Index
4.6 s
Speed Index shows how quickly the contents of a page are visibly populated.
Serve static assets with an efficient cache policy
116 resources found
A long cache lifetime can speed up repeat visits to your page.
Avoid enormous network payloads
Total size was 3,296 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 13 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.
Properly size images
Potential savings of 15 KiB
Serve images that are appropriately-sized to save cellular data and improve load time.
First Contentful Paint
1.0 s
First Contentful Paint marks the time at which the first text or image is painted.
Eliminate render-blocking resources
Potential savings of 510 ms
Resources are blocking the first paint of your page. Consider delivering critical JS/CSS inline and deferring all non-critical JS/styles.
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: