First visit
CO2 1.105g
SIZE 3.48 MB
Return visit
CO2 0.019g
SIZE 60.71 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
18.59 KB
0.006g
Stylesheet
1
20.67 KB
0.006g
Script
8
797.98 KB
0.248g
Image
43
1.38 MB
0.440g
Other
1
6.74 KB
0.002g
Font
4
232.02 KB
0.072g
XHR
4
1002.52 KB
0.311g
Fetch
1
64.47 KB
0.020g
Core Web Vitals
Max Potential First Input Delay
450 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
0.001
Cumulative Layout Shift measures the movement of visible elements within the viewport.
Largest Contentful Paint
4.9 s
Largest Contentful Paint marks the time at which the largest text or image is painted.
Opportunities
First Meaningful Paint
1.6 s
First Meaningful Paint measures when the primary content of a page is visible.
Minimize main-thread work
3.1 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 1,092 KiB
Image formats like WebP and AVIF often provide better compression than PNG or JPEG, which means faster downloads and less data consumption.
Speed Index
4.7 s
Speed Index shows how quickly the contents of a page are visibly populated.
Avoid an excessive DOM size
1,341 elements
A large DOM will increase memory usage, cause longer style calculations, and produce costly layout reflows
Properly size images
Potential savings of 132 KiB
Serve images that are appropriately-sized to save cellular data and improve load time.
Efficiently encode images
Potential savings of 156 KiB
Optimized images load faster and consume less cellular data.
Time to Interactive
4.7 s
Time to Interactive is the amount of time it takes for the page to become fully interactive.
Total Blocking Time
660 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds.
Serve static assets with an efficient cache policy
2 resources found
A long cache lifetime can speed up repeat visits to your page.
Avoid enormous network payloads
Total size was 3,561 KiB
Large network payloads cost users real money and are highly correlated with long load times.
Server Backend Latencies
620 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.
Reduce JavaScript execution time
2.1 s
Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this.
Reduce unused JavaScript
Potential savings of 397 KiB
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity.
First Contentful Paint
1.6 s
First Contentful Paint marks the time at which the first text or image is painted.
Reduce initial server response time
Root document took 1,210 ms
Keep the server response time for the main document short because all other requests depend on it.
Minify JavaScript
Potential savings of 126 KiB
Minifying JavaScript files can reduce payload sizes and script parse time.
Eliminate render-blocking resources
Potential savings of 590 ms
Resources are blocking the first paint of your page. Consider delivering critical JS/CSS inline and deferring all non-critical JS/styles.
Enable text compression
Potential savings of 44 KiB
Text-based resources should be served with compression (gzip, deflate or brotli) to minimize total network bytes.
Network Round Trip Times
20 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.
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: