Reddit Bulk Multireddit Creator from List

WHAT IT DOES

Reddit Bulk Multireddit Creator from List is a Reddit utility tool that streamlines the process of creating multireddits from lists of subreddits. Instead of manually typing each subreddit name into the multireddit creation interface, or trying to remember all the subreddits you want to combine—a process that can be tedious and error-prone—this script automates the entire workflow. It scans the current Reddit page for subreddit names and links, identifies all unique subreddits, and presents them as a scrollable checklist. You can select individual subreddits, use Select All/Deselect All toggles, provide a custom multireddit name, and either generate a combined URL that you can open immediately or copy to your clipboard. The tool also includes a confirmation toggle to prevent accidental creation. This is ideal for Reddit users who want to curate custom feeds by combining multiple subreddits into a single view.

WHERE IT RUNS

This script operates exclusively on Reddit (*.reddit.com/*) as a userscript injected through the BotGentz extension. It runs within the context of your current browser tab and cannot access other tabs, bookmarks, history, or downloads. The script reads the page DOM to identify subreddit names using Reddit's selectors (a[href*="/r/"], .subreddit-name, .subreddit-link), extracts subreddit names from links and text, and generates multireddit URLs. All operations occur locally in your browser; no data is sent to external servers. The script opens the multireddit URL in a new tab using GM_openInTab.

HOW TO USE

1. Navigate to any Reddit page containing subreddit names or links—a user profile, a subscription list, a sidebar, a comment thread with subreddit mentions, or any page with r/subreddit references.

2. Click the BotGentz extension icon and select "Reddit Bulk Multireddit Creator from List" from the script list.

3. The panel opens on the right side of the page. It automatically scans the current page for subreddits.

4. Review the detected subreddits, showing each as "r/subreddit".

5. Enter a name for your multireddit in the "Multireddit name" field (this is used for the URL).

6. Toggle "Confirm before creating" if you want a confirmation popup.

7. Check the boxes next to subreddits you wish to include. Use "Select All" or "Deselect All" for quick selection.

8. Click "Open Multireddit" to open the combined feed in a new tab, or "Copy Multireddit URL" to copy the URL to your clipboard.

9. The URL uses the format: https://www.reddit.com/r/subreddit1+subreddit2+subreddit3/

WHY IT WORKS WHERE OTHERS FAIL

Many Reddit automation tools attempt to use Reddit's API, which requires authentication and has rate limits. This script takes a different approach: it works directly with Reddit's public URL structure for combining subreddits (r/subreddit1+subreddit2+...), which is a native Reddit feature that doesn't require API access. It detects subreddits using a multi-layer strategy: first looking for links to /r/ pages, then scanning text for r/subreddit patterns, and finally looking for plain subreddit names. This makes it resilient to different page layouts and content formats. By generating a URL rather than attempting to create a multireddit through the UI, it avoids the complexity of Reddit's modal-based multireddit creation and works even on accounts that don't have multireddit creation enabled.

THE PANEL

The script uses BotGentz's BGPanel system, which provides a floating, draggable panel on the right side of your screen. Drag the panel by its header to reposition it anywhere on the page—the panel remembers its position per site and snaps to the nearest edge when released. Click the minimize button to collapse the panel to a small floating bubble; click the bubble to expand it back. Resize the panel vertically by dragging its bottom edge. Press the Escape key to close the panel entirely. All panel state (position, collapsed/expanded) is persisted locally using GM_setValue, so your preferences survive page reloads.

PLEASE NOTE

This userscript requires the free BotGentz browser extension—it is not a standalone application. The script detects subreddits based on the current page content; not all subreddits on a page may be detected depending on the page structure. The generated URL uses the format r/subreddit1+subreddit2+..., which works on Reddit's web interface. This script does not store, transmit, or process any of your Reddit data outside your local browser. It does not access your password, hidden inputs, or file inputs. All subreddit detection and URL generation is performed locally in your browser. Use responsibly and verify the selected subreddits before opening the multireddit.