Edit anything on the web with change tracking

Screen Ruler is a powerful web inspection tool designed for developers and designers who need to measure, inspect, and edit web pages with precision and speed. It is a Chrome extension that combines element inspection, distance measurement, CSS editing, and asset extraction into a single interface, eliminating the need for multiple standalone tools. Built for professionals who demand accuracy, it allows users to hover over any element to view its box model, tag names, and computed CSS properties. The core value lies in streamlining the entire web validation workflow—from checking pixel-perfect layouts to editing live CSS with change tracking. With over 50,000 users worldwide, Screen Ruler has become an essential companion for anyone working with front-end code or design implementation. Whether you are a freelance web designer or a member of a large product team, this tool provides the comprehensive functionality needed to ensure every detail matches the design intent.

Developers and designers often struggle with juggling multiple browser extensions and dev tools to inspect elements, measure distances, check colors, and validate accessibility. This fragmented workflow leads to inefficiency and missed errors. Screen Ruler addresses this by providing a single, cohesive platform that handles all these tasks. It automatically detects accessibility issues like WCAG contrast failures and surfaces SEO problems such as missing meta tags or multiple H1s. By centralizing these capabilities, it reduces context switching and helps teams maintain high quality standards without doubling their toolset. The built-in color picker and box shadow visualization further eliminate the need for separate utilities, making every design review faster and more accurate.

Element Inspection is a core feature that displays real-time sizes, margins, paddings, tag names, IDs, and classes as you hover over any page element. This immediate feedback loop allows developers to understand layout structure without opening DevTools. Combined with Distance Measurement, which lets you select an element and measure pixel distances to other elements, users can verify spacing and alignment with surgical precision. The Page Rulers feature adds horizontal and vertical guides with crosshairs for global viewport measurements, ensuring consistency across the entire page. These foundational tools dramatically reduce the guesswork in CSS layout debugging.

Computed CSS and CSS Rules Inspector provide deep access to an element's styling. Users can view and copy the computed CSS properties of any selected element directly to the clipboard, or examine the actual stylesheet source with the CSS Rules Inspector. For teams using Tailwind CSS, the Tailwind CSS Generator instantly converts computed styles into Tailwind utility classes, accelerating development in component-based frameworks. Live CSS Editing with Change Tracking (Pro) takes this further by allowing real-time edits in the side panel, with a per-element diff view that lets you copy or revert each change. This makes iterative design experiments safe and reversible.

Screen Ruler

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