Box Trace

by mayzervan9@gmail.com · Developer Tools

Manifest V3 Free

View in Chrome Web Store Data as of 15 Oct 2026

Hover elements to inspect content, padding, border, and margin box sizes.

Users

−1 in 30 days

Rating

0.0 / 5

unchanged in 30 days

Ratings

0 in 30 days

Store rank

#364K

#275K among extensions

Version

1.0.0

updated 22 Jul 2026

Users

monthly, 3 months

Latest, 15 Oct 2026: 2 usersMove the mouse over the chart for any month

Ratings count

monthly, 3 months

Latest, 15 Oct 2026: 0 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 Box Trace

Box Trace shows box-model sizes when you hover elements on a page. How it works: • Open a normal http or https page • Click the extension icon and tap Enable on this tab • Hover any element • See content size plus padding, border, and margin in a tooltip • Disable on this tab when you are done Details: • Useful for spacing and layout debugging • Active only on the tab where you enable it • Works only on regular websites — not on chrome:// pages • No account and no cloud sync Privacy: • Does not store or upload page content • Nothing is sent to a server • Works offline after install