First visit
CO2 1.284g
SIZE 1.69 MB
Return visit
CO2 1.154g
SIZE 1.52 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
Image
7
985.87 KB
0.731g
Script
12
332.38 KB
0.246g
Stylesheet
7
257.06 KB
0.190g
Font
4
146.2 KB
0.108g
Document
1
9.57 KB
0.007g
Other
2
1.29 KB
0.001g
Core Web Vitals
Max Potential First Input Delay
20 ms
The maximum potential First Input Delay that your users could experience is the duration of the longest task.
Cumulative Layout Shift
0.247
Cumulative Layout Shift measures the movement of visible elements within the viewport.
Largest Contentful Paint
1.0 s
Largest Contentful Paint marks the time at which the largest text or image is painted.
Opportunities
Minimizes main-thread work
0.6 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 490 ms
Resources are blocking the first paint of your page. Consider delivering critical JS/CSS inline and deferring all non-critical JS/styles.
Reduce unused JavaScript
Potential savings of 187 KiB
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity.
Efficiently encode images
Potential savings of 342 KiB
Optimized images load faster and consume less cellular data.
Speed Index
1.9 s
Speed Index shows how quickly the contents of a page are visibly populated.
First Contentful Paint
1.0 s
First Contentful Paint marks the time at which the first text or image is painted.
Serve static assets with an efficient cache policy
29 resources found
A long cache lifetime can speed up repeat visits to your page.
JavaScript execution time
0.1 s
Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this.
Reduce unused CSS
Potential savings of 239 KiB
Reduce unused rules from stylesheets and defer CSS not used for above-the-fold content to decrease bytes consumed by network activity.
Serve images in next-gen formats
Potential savings of 635 KiB
Image formats like WebP and AVIF often provide better compression than PNG or JPEG, which means faster downloads and less data consumption.
Properly size images
Potential savings of 87 KiB
Serve images that are appropriately-sized to save cellular data and improve load time.
Time to Interactive
1.0 s
Time to interactive is the amount of time it takes for the page to become fully interactive.
Minify JavaScript
Potential savings of 46 KiB
Minifying JavaScript files can reduce payload sizes and script parse time.
Avoids an excessive DOM size
435 elements
A large DOM will increase memory usage, cause longer style calculations, and produce costly layout reflows
First Meaningful Paint
1.0 s
First Meaningful Paint measures when the primary content of a page is visible.
Avoid serving legacy JavaScript to modern browsers
Potential savings of 8 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.
Avoids enormous network payloads
Total size was 1,732 KiB
Large network payloads cost users real money and are highly correlated with long load times.
Initial server response time was short
Root document took 100 ms
Keep the server response time for the main document short because all other requests depend on it.
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: