First visit
CO2 0.165g
SIZE 450.1 KB
Return visit
CO2 0.012g
SIZE 33.07 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
Document
5
33.07 KB
0.012g
Image
7
90.71 KB
0.033g
Script
11
285.47 KB
0.105g
Stylesheet
1
27.71 KB
0.010g
XHR
1
13.14 KB
0.005g
Core Web Vitals
Max Potential First Input Delay
80 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
0.083
Cumulative Layout Shift measures the movement of visible elements within the viewport.
Largest Contentful Paint
0.4 s
Largest Contentful Paint marks the time at which the largest text or image is painted.
Opportunities
Total Blocking Time
10 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds.
Avoids enormous network payloads
Total size was 450 KiB
Large network payloads cost users real money and are highly correlated with long load times.
Time to Interactive
0.9 s
Time to Interactive is the amount of time it takes for the page to become fully interactive.
Reduce unused CSS
Est savings of 25 KiB
Reduce unused rules from stylesheets and defer CSS not used for above-the-fold content to decrease bytes consumed by network activity.
First Contentful Paint
0.3 s
First Contentful Paint marks the time at which the first text or image is painted.
Minimizes main-thread work
0.7 s
Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this.
Avoids an excessive DOM size
452 elements
A large DOM will increase memory usage, cause longer style calculations, and produce costly layout reflows
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.
Properly size images
Est savings of 29 KiB
Serve images that are appropriately-sized to save cellular data and improve load time.
Server Backend Latencies
0 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.
Initial server response time was short
Root document took 160 ms
Keep the server response time for the main document short because all other requests depend on it.
Speed Index
0.6 s
Speed Index shows how quickly the contents of a page are visibly populated.
Network Round Trip Times
0 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.
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: