Estimate how heavy your web page is and roughly how long it will take to load across different connection speeds. Enter the size in kilobytes of your HTML, CSS, JavaScript, images and fonts, and the tool totals the page weight and models download time on slow 3G, fast 4G and broadband connections. Page weight is one of the biggest drivers of load speed, and speed affects both search rankings and bounce rate, so keeping a performance budget is a healthy habit. The estimate uses typical throughput for each connection type plus a little latency, so it is a planning guide rather than a lab benchmark. Watch how images and scripts dominate the total, which is usually where the easiest wins are. Everything is calculated locally in your browser, so your numbers stay on your device.
It sums the sizes of your HTML, CSS, JavaScript, images and fonts to give a total page weight in kilobytes or megabytes.
It divides total page weight by typical throughput for 3G, 4G and broadband to estimate how long the page takes to download.
Heavier pages take longer to download, especially on slower connections, so trimming asset sizes directly improves load time.
Estimate how heavy your web page is and roughly how long it will take to load across different connection speeds. Enter the size in kilobytes of your HTML, CSS, JavaScript, images and fonts, and the tool totals the page weight and models download time on slow 3G, fast 4G and broadband connections.
Yes. Page Weight Budget Calculator is completely free, with no sign-up and no usage limits.
Yes. Page Weight Budget Calculator runs in any modern web browser. There is nothing to download or install.
Yes. Page Weight Budget Calculator runs entirely on your device in your browser, so nothing you enter is uploaded to a server.