Replace Text extension

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Mr. Starfleet Command

24 de junio de 2026 21:39

The Replace Text extension provides a bot-editing interface via a special page, allowing for mass find-and-replace edits. There are other ways to do this, but I think it would be a good idea to have a built-in mechanism for it, so I'd like Fandom to consider adding this extension. The extension is included in the default MediaWiki bundle but not yet supported on Fandom.

If Fandom adds this extension, make sure to include the following configuration to make this tool available to bots instead of admins:

$wgGroupPermissions['bot']['replacetext'] = true;
$wgGroupPermissions['bot-global']['replacetext'] = true;
$wgGroupPermissions['sysop']['replacetext'] = false;

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  Héctor Donís López

  24 de julio de 2026 14:21

  While this sounds like a convenient tool, Fandom deliberately doesn't support the Replace Text extension due to severe safety and performance risks.

  Even if restricted to bots, there is a core technical difference between this extension and external tools:

  Replace Text executes heavy, instant queries directly on Fandom's servers. This causes massive database lag, clears site cache instantly, and cannot be stopped mid-process if a regex error occurs.

  AWB or Pywikibot run on the user's local machine and edit safely via the API. They process changes page-by-page at a controlled speed (throttled), making bad edits easy to pause and revert without straining the database.

  Because server-side mass replacements pose too much risk to site stability, all automated find-and-replace edits must be handled locally via the MediaWiki API using tools like AWB.

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