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Install a browser extension for managing user scripts if you don't have one:
- Chrome: Violentmonkey or Tampermonkey
- Firefox: Greasemonkey, Tampermonkey, or Violentmonkey
- Safari: Tampermonkey
- Microsoft Edge: Tampermonkey
- Opera: Tampermonkey or Violentmonkey
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Install the deleteDiscordMessages.user.js
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Open Discord in your browser (Not the App)
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A Trash icon should appear on the top right corner
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Click on the blue buttons near Authorization, Author and Channel.
(Optional: getting authToken, authorId, channelId and messageId manually) -
Click the START button.