DataFocus Ruler

About

Never lose your place again when reading large tables, datasets, or dense text.

DataFocus Ruler adds a virtual reading ruler to any webpage — a horizontal guide that highlights the current row or line, making it easy to track your position across wide tables, CSV data, financial reports, code, and more.

▸ FREE FEATURES
• Horizontal ruler follows your cursor or scrolls with keyboard
• Lock the ruler in place to read without moving it
• Adjustable opacity and color
• Works on any website — tables, lists, code blocks, spreadsheets
• Keyboard shortcuts: Alt+R to toggle, arrow keys to move
• Lightweight — zero performance impact

▸ PRO FEATURES
• Multiple ruler colors and custom themes
• CSV export of highlighted data
• Table auto-detection and smart highlighting
• Row and column guides
• Configurable ruler height and position

Perfect for:
• Data analysts scanning large spreadsheets online
• Developers reading log files or JSON tables
• Researchers reviewing data-heavy pages
• QA engineers comparing table values
• Anyone who reads wide tables on the web

Built with care by SwiftClip — extensions that eliminate digital friction.