Meeting Availability Grid

WHAT IT DOES

Meeting Availability Grid is a browser extension that automatically scans the current webpage for calendar grids, date selectors, time slots, availability indicators, and meeting scheduling interfaces. It detects calendar-related elements by examining class names, IDs, data attributes, and text patterns for keywords like "calendar", "schedule", "slot", "time", "available", "busy", "tentative", "date", or "meeting". The extension adds a floating "mark availability" button (📅) next to each detected time slot or calendar cell, allowing you to capture date, time slot, availability status, and custom notes with a single click. Clicking the button opens a panel where you can set the availability status (Available/Busy/Tentative/Out of Office), add notes about meeting constraints, time zone preferences, recurring availability, or any other relevant details, and save it to your local database. The extension maintains a complete availability database per date and time slot with status history, notes, and tags for each tracked slot. The main panel displays all tracked availability slots, showing the date, time, current status, entry count, and latest note. All data is stored locally in your browser using GM_setValue, ensuring your availability tracking information persists across page reloads and browser sessions. This helps professionals, managers, and team members track their availability across different calendar systems, document meeting preferences, and schedule meetings more efficiently.

WHERE IT RUNS

This extension runs on any webpage that displays calendar grids, date selectors, time slots, availability indicators, or meeting scheduling interfaces – including calendar applications, scheduling tools, meeting booking platforms, project management systems, team availability dashboards, and any page containing calendar or time slot information. The extension intelligently adapts to different page structures and supports a wide range of common calendar display patterns. No manual configuration is required per site; the extension automatically detects calendar elements using a flexible pattern matching system. This makes it ideal for professionals who manage their schedule across multiple calendar systems and need to track availability preferences.

HOW TO USE

Simply install the extension and navigate to any webpage displaying a calendar or time slots. The extension automatically detects calendar elements and places a small "mark availability" button (📅) next to each time slot or calendar cell. Click any of these buttons to open the availability panel with date and time pre-filled. Select your availability status from the dropdown (Available/Busy/Tentative/Out of Office), add a note about meeting constraints, time zone preferences, or any other relevant detail, then click "Save Availability" to store it in your local database. A floating button (🗓️) appears in the bottom-right corner of the page – click this to open the main panel. The main panel shows all tracked availability slots, sorted by most recent entry, with date, time, current status, entry count, and latest note displayed. Use the settings section to enable or disable auto-detection and set your default availability status. The "Clear All Data" button removes all tracking data when needed.

ONE TECHNICAL SECTION – WHY IT WORKS

The extension employs a multi-layered detection system that identifies calendar and time slot information with high accuracy. First, it scans the DOM using a comprehensive set of CSS selectors targeting common calendar-related class patterns, IDs, and data attributes like "calendar", "schedule", "slot", "time", "availability", and grid cell roles. Second, it uses a TreeWalker to examine text nodes for calendar-related text patterns, capturing slot information that may not be wrapped in typical calendar elements. The date extraction uses a pattern-matching engine with multiple date formats including ISO (2024-01-15), US (01/15/2024), and natural language dates. The time slot extraction identifies various time formats including 12-hour (2:30 PM), 24-hour (14:30), and time ranges (2:00-3:00 PM). The status detection analyzes multiple signals: text content containing status keywords (Available/Busy/Tentative/Out of Office), CSS class indicators, badge elements, and data attributes. Each tracked slot is assigned a unique ID based on the date and time slot, ensuring that history stays correctly associated even when the same slot appears in different contexts. A MutationObserver detects dynamic content updates and re-scans only when new calendar elements appear, balancing real-time accuracy with system performance.

THE PANEL – DRAG / PER-SITE POSITION / SNAP / COLLAPSE / RESIZE / ESCAPE

The availability tracking panel includes a draggable title bar, allowing you to position it anywhere on screen for convenient access during schedule management. The extension remembers your preferred position per website, so the panel opens in the same location each time you return to that domain. The panel supports snap-to-edge behavior – when dragged near screen edges, it gently snaps into place for a tidy workspace layout. You can collapse the panel down to just its title bar by clicking the collapse button, keeping it accessible without taking up screen space. The slot list and history are contained within a scrollable body, ensuring all content remains accessible even on smaller screens. Pressing the Escape key closes the panel instantly, returning you to your calendar workflow.

PLEASE NOTE

This extension requires the free BotGentz extension to be installed and enabled, as it relies on BotGentz's userscript injection and GM_* API shims for cross-browser compatibility. Websites frequently update their HTML structures and class names, which may cause calendar detection to break temporarily – we actively maintain the matching patterns and release updates regularly. The extension stores all availability data, status history, and notes exclusively in your local browser storage (GM_setValue); no data is ever transmitted to any external server or third party. You are responsible for backing up your availability tracking data if you switch browsers or clear your storage. The extension does not read, modify, or interfere with any calendar systems, meeting bookings, or site functionality – it operates solely on the static page content and stores only metadata (dates, time slots, statuses, and notes) that you explicitly create. Use this tool responsibly for personal and professional schedule management.