Web Page Size Checker

Manifest V3 Free

View in Chrome Web Store Data as of 15 Oct 2026

Accurately measures any webpage's total payload, breaks it down by file type, surfaces the exact files bloating your page.

Users

173

+10 in 30 days

Rating

5.0 / 5

unchanged in 30 days

Ratings

0 in 30 days

Store rank

#68K

#57K among extensions

Version

3.0

updated 25 Aug 2026

Users

monthly, 6 months

Latest, 15 Oct 2026: 173 usersMove the mouse over the chart for any month

Ratings count

monthly, 6 months

Latest, 15 Oct 2026: 1 ratingsMove the mouse over the chart for any month

The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.

About Web Page Size Checker

Instantly see the network size of any webpage! Discover what's slowing down your load times with a smart SEO breakdown and insights. Take Control of Your Page Load Times & SEO! The Web Page Size Checker is the ultimate lightweight tool designed for developers, SEO professionals, and curious users who want to know exactly how heavy a webpage is without opening complex developer tools. With a single glance at your toolbar, you can instantly see the total payload size of any website you visit, automatically color-coded to tell you if the page is optimized or too heavy. ✨ Key Features: Instant Toolbar Size Indicator: Always know the size of the current page you're on with a clean, beautifully crisp badge that updates automatically. Smart Resource Breakdown: Click the extension icon to reveal a gorgeous, segmented breakdown chart detailing exactly what is eating up your bandwidth. Instantly see the individual payload sizes for HTML, CSS, JavaScript, Images, and Web Fonts! Actionable SEO Insights: Receive automated, tailored suggestions based on the page's specific payload sizes. For example, the extension will warn you if your JavaScript payload is too high or if unoptimized images are dragging down your mobile SEO scores. Customizable Settings: Choose between two modes! Let the extension calculate sizes "automatically" in the background as you browse, or switch to "manual mode" so it only calculates precisely when you click the icon. Add Web Page Size Checker to your browser today and start auditing pages effortlessly!