WindowSync — Dual Tab Scroll Sync

by ichi0726 · engineering.webstudio168.jp · Tools

Established publisherManifest V3 Free

View in Chrome Web Store Data as of 19 Oct 2026

Split two tabs side by side and sync their scroll position. Press Esc to stop.

Users

+10 in 30 days

Rating

4.0 / 5

unchanged in 30 days

Ratings

0 in 30 days

Store rank

#110K

#92K among extensions

Version

1.3

updated 28 Aug 2026

Users

monthly, 5 months

Latest, 19 Oct 2026: 49 usersMove the mouse over the chart for any month

Ratings count

monthly, 5 months

Latest, 19 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 WindowSync — Dual Tab Scroll Sync

WindowSync is a Chrome extension that splits two tabs and syncs their scroll positions in real time. ■ Features - Split tabs side-by-side or top-bottom - Sync by scroll ratio (page position %) — works even when the two pages have different heights - Press Esc to stop sync and automatically restore the original tab layout - (TEST) Diff highlight: red borders mark text and image differences on tab ② - Tab number badges (① ②) clearly identify which tab is which ■ How to use 1. Click the extension icon to open the popup 2. Select 2 tabs to sync 3. Choose split mode (side by side / top and bottom) 4. Click the Start button 5. Press Esc to stop syncing and restore original layout Perfect for comparing pages, research, design reviews, and any task where you need two pages side by side.