First visit
CO2 0.571g
SIZE 1.8 MB
Return visit
CO2 0.079g
SIZE 255.91 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
1
135.89 KB
0.042g
Script
32
1.07 MB
0.341g
Stylesheet
9
98.55 KB
0.031g
XHR
7
7.65 KB
0.002g
Font
3
51.62 KB
0.016g
Fetch
13
233.44 KB
0.072g
Image
12
212.73 KB
0.066g
Preflight
1
514 B
0.000g
Core Web Vitals
Max Potential First Input Delay
550 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
0.004
Cumulative Layout Shift measures the movement of visible elements within the viewport.
Largest Contentful Paint
3.2 s
Largest Contentful Paint marks the time at which the largest text or image is painted.
Opportunities
Initial server response time was short
Root document took 250 ms
Keep the server response time for the main document short because all other requests depend on it.
Total Blocking Time
1,410 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds.
Speed Index
3.8 s
Speed Index shows how quickly the contents of a page are visibly populated.
Minimize main-thread work
5.4 s
Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this.
Server Backend Latencies
250 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.
Serve images in next-gen formats
Potential savings of 89 KiB
Image formats like WebP and AVIF often provide better compression than PNG or JPEG, which means faster downloads and less data consumption.
First Contentful Paint
1.8 s
First Contentful Paint marks the time at which the first text or image is painted.
Eliminate render-blocking resources
Potential savings of 350 ms
Resources are blocking the first paint of your page. Consider delivering critical JS/CSS inline and deferring all non-critical JS/styles.
Avoids enormous network payloads
Total size was 1,840 KiB
Large network payloads cost users real money and are highly correlated with long load times.
First Meaningful Paint
1.8 s
First Meaningful Paint measures when the primary content of a page is visible.
Serve static assets with an efficient cache policy
13 resources found
A long cache lifetime can speed up repeat visits to your page.
Reduce JavaScript execution time
4.3 s
Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this.
Network Round Trip Times
170 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.
Reduce unused JavaScript
Potential savings of 463 KiB
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity.
Time to Interactive
5.4 s
Time to Interactive is the amount of time it takes for the page to become fully interactive.
Reduce unused CSS
Potential savings of 78 KiB
Reduce unused rules from stylesheets and defer CSS not used for above-the-fold content to decrease bytes consumed by network activity.
Defer offscreen images
Potential savings of 147 KiB
Consider lazy-loading offscreen and hidden images after all critical resources have finished loading to lower time to interactive.
Avoid an excessive DOM size
6,328 elements
A large DOM will increase memory usage, cause longer style calculations, and produce costly layout reflows
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: