First visit
CO2 0.393g
SIZE 1.24 MB
Return visit
CO2 0.078g
SIZE 252.21 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
Other
26
696.06 KB
0.216g
Script
21
402.47 KB
0.125g
Image
5
78.13 KB
0.024g
Document
2
58.16 KB
0.018g
Font
2
20.36 KB
0.006g
Stylesheet
1
11.08 KB
0.003g
Core Web Vitals
Max Potential First Input Delay
40 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
0.019
Cumulative Layout Shift measures the movement of visible elements within the viewport.
Largest Contentful Paint
1.2 s
Largest Contentful Paint marks the time at which the largest text or image is painted.
Opportunities
Avoids an excessive DOM size
592 elements
A large DOM will increase memory usage, cause longer style calculations, and produce costly layout reflows
Minimizes main-thread work
0.5 s
Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this.
Speed Index
0.9 s
Speed Index shows how quickly the contents of a page are visibly populated.
Properly size images
Potential savings of 14 KiB
Serve images that are appropriately-sized to save cellular data and improve load time.
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.
Avoid multiple page redirects
Potential savings of 230 ms
Redirects introduce additional delays before the page can be loaded.
Network Round Trip Times
10 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.
First Contentful Paint
0.7 s
First Contentful Paint marks the time at which the first text or image is painted.
Initial server response time was short
Root document took 50 ms
Keep the server response time for the main document short because all other requests depend on it.
Serve images in next-gen formats
Potential savings of 11 KiB
Image formats like WebP and AVIF often provide better compression than PNG or JPEG, which means faster downloads and less data consumption.
Serve static assets with an efficient cache policy
11 resources found
A long cache lifetime can speed up repeat visits to your page.
Reduce unused JavaScript
Potential savings of 107 KiB
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity.
Avoids enormous network payloads
Total size was 1,266 KiB
Large network payloads cost users real money and are highly correlated with long load times.
Time to Interactive
0.7 s
Time to Interactive is the amount of time it takes for the page to become fully interactive.
First Meaningful Paint
0.7 s
First Meaningful Paint measures when the primary content of a page is visible.
Server Backend Latencies
300 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.
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: