Chrome Extension for Web Developers
CSS Debugging.
Finally Visual.
Inspect spacing, typography, colors, layouts and CSS cascade directly on the page. No DevTools digging required.Built for freelancers, frontend developers and design QA teams.
Everything You Need To Inspect A Website
Sightline brings the most useful parts of DevTools directly onto the page.CSS Cascade Debugger
See every matching CSS rule, specificity score, and winning selector directly on the page.Visual Box Model
Inspect margins, padding, borders, and content areas without opening DevTools.Guide Lines
Drop horizontal and vertical guides that stay synced across tabs and browser sessions.Typography Inspector
Identify font family, size, weight, line-height, and colors instantly.Design QA
Validate layouts, spacing, and visual consistency with pixel-perfect precision.Built for Developers
Works on localhost, staging environments, production websites, and design references.CSS debugging shouldn't require five DevTools panels.
Most developers spend more time finding the problem than fixing it.Inspect spacing, typography, colors, and layouts directly on the page.
No tab switching. No hunting through nested panels. Just point and inspect.Understand why your CSS is winning. Or losing.
Visualize specificity, matched rules, overrides, and the complete cascade.Drop guides. Compare layouts. Build pixel-perfect interfaces.
Keep design references aligned across tabs and validate spacing with confidence.Sightline brings the most useful parts of DevTools onto the page.
Built for frontend developers, freelancers, agencies, and design QA teams.
