A developer tool to draw alignment lines and inspect spacing, styles, and dimensions with pixel-perfect precision.
Users
159
+9 in 30 days
Rating
5.0 / 5
unchanged in 30 days
Ratings
4
0 in 30 days
Store rank
#70K
#59K among extensions
Version
1.1
updated 31 Jan 2026
Users
monthly, 15 months
Latest, 16 Oct 2026:159 usersMove the mouse over the chart for any month
Ratings count
monthly, 15 months
Latest, 16 Oct 2026:4 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 Lines
Web Lines is a powerful suite of tools for developers and designers who demand pixel-perfect precision when building websites.
Easily inspect any webpage to understand its layout and structure:
📏 Draw vertical and horizontal alignment lines
🎯 Click to exact pixel positions with mouse or keyboard shortcuts
🧱 Visualize box model layers — Margin, Border, Padding, and Content
👁️ Hover to preview element size
🔍 Inspect styles like font, color, background, and spacing
🎨 Customize grid overlays, line colors, and opacity to match your design needs
🧹 Clear all or last lines instantly, toggle visibility, or enable grid overlays
Whether you're debugging CSS, aligning interface elements, or fine-tuning spacing, this tool gives you everything you need — directly on the live webpage.
👋 Heads up: Chrome may show a "Proceed with Caution" warning when installing. This is normal for newer extensions and safe to proceed. Web Lines requests only minimal permissions and does not collect any data.