Page Weight and Load Time Checker
Estimate how heavy a web page is by adding up the size of its parts, so you can find what's slowing it down.
Why page weight matters
A heavy page is a slow page, and slow pages lose visitors and rank worse, especially on mobile connections. Page weight is the total size of everything a browser has to download to show the page — the HTML, the images, the scripts, the fonts, the stylesheets. This helps you tally that up so you can see how big your page is and, more usefully, which parts are the heaviest.
Add up your page's components and see where the weight sits.
Images are usually the culprit
On the vast majority of pages, the biggest weight by far is images, followed by JavaScript. That is good news, because it means the highest-impact fix is almost always compressing and correctly sizing your images rather than agonising over a few kilobytes of code. Once images are under control, unused scripts and heavy fonts are the next places to look. Knowing where the weight is turns performance from a vague worry into a specific to-do list.
Common questions
What is page weight?
The total size of everything a browser downloads to display the page — HTML, images, scripts, fonts and styles.
What usually makes a page heavy?
Images by a wide margin, then JavaScript. Compressing and sizing images is normally the highest-impact fix.
Is anything uploaded?
No. The calculation happens in your browser.