Reddit User Note Tagger

WHAT IT DOES

Reddit User Note Tagger is a browser extension that automatically scans the current Reddit page for usernames, user mentions, and comment/author elements. It detects username elements by examining class names, IDs, and data attributes for patterns like ".author", ".user", ".username", and related selectors. The extension adds a floating tag button (🏷️) next to detected usernames, providing quick access to user note controls. Clicking the button opens a panel where you can add tags and notes to specific Reddit users, view existing notes, and store user notes locally. The panel displays the username, existing note content, and tags. You can add or edit notes, add tags (comma-separated), delete notes, and view the last updated timestamp. The extension maintains a user note database per username with notes, tags, and timestamps. The main panel shows all tagged users with their latest notes, tags, and timestamps. Notes can be displayed inline as badges next to usernames or as a clickable tag button. All data is stored locally in your browser using GM_setValue, ensuring your user notes persist across page reloads and browser sessions. This helps Reddit users who want to remember and track other users, note their behavior, content quality, or interactions, and maintain personal context about users they encounter on Reddit.

WHERE IT RUNS

This extension runs on any Reddit page that displays usernames, user mentions, or comment/author elements – including Reddit comment sections, post pages, user profiles, and any page with Reddit usernames. The extension intelligently adapts to different page structures and supports a wide range of common Reddit display patterns. No manual configuration is required per site; the extension automatically detects username elements using a flexible pattern matching system. This makes it ideal for Reddit users who want to remember and track other users with custom tags and notes.

HOW TO USE

Simply install the extension and navigate to any Reddit page. The extension automatically detects usernames and shows a tag button (🏷️) next to each one. Click the button to open the note panel for that user. The panel shows the username, existing note, and tags. Enter a note and tags (comma-separated) and click "Save Note" to store it. Click "Delete Note" to remove the note for that user. By default, notes are displayed as inline badges next to usernames when they exist. You can change this in settings to show only the tag button instead. A floating button (🏷️) appears in the bottom-right corner of the page – click this to open the main panel. The main panel shows all tagged users with their latest notes, tags, and timestamps. Use the settings section to enable or disable auto-detection and choose note display preference. The "Clear All Notes" button removes all tracking data when needed.

ONE TECHNICAL SECTION – WHY IT WORKS

The extension uses DOM traversal to identify and interact with username elements. The detection system uses a comprehensive set of CSS selectors targeting username containers including ".author", ".user", ".username", and href attributes containing "/user/" or "u/". The username is extracted from the element's text content, with "u/" and "/u/" prefixes removed, and validated against alphanumeric + underscore patterns. When a user adds a note, the extension stores it in the local database keyed by username, with each entry containing an array of notes (supporting multiple revisions), tags, and timestamps. The note badges are inserted as span elements with styling matching the Reddit theme. The extension handles dynamic content updates by re-scanning for username elements when the DOM changes. A MutationObserver detects dynamic content updates and re-scans only when new username elements appear, balancing real-time accuracy with system performance.

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

The user note panel includes a draggable title bar, allowing you to position it anywhere on screen for convenient access during browsing. 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 note controls 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 Reddit browsing 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 username detection to break temporarily – we actively maintain the matching patterns and release updates regularly. The extension stores all user notes, tags, and history exclusively in your local browser storage (GM_setValue); no data is ever transmitted to any external server or third party. The extension does not read, modify, or interfere with any Reddit content or functionality beyond the username display – it operates on the page content and stores only metadata (usernames, notes, tags, and timestamps) that you explicitly create. You are responsible for backing up your user notes data if you switch browsers or clear your storage. Use this tool responsibly and in accordance with Reddit's Terms of Service.