TLDR: Watch this 40s video instructions
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Select and Copy this script: deleteDiscordMessages.js
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Open Discord in a browser (like Chrome, Safari or Firefox)
and go to a #Channel or a DM conversation -
Open DevTools pressing:
- Chrome (Windows, Linux, Chrome OS): F12 or Control+Shift+J
- Firefox (Windows, Linux, Chrome OS): F12 or Control+Shift+K
- Chrome (Mac): Command+Option+J
- Safari (Mac): Command+Option+C
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Paste (Ctrl+V) the script in the "Console" tab, then press ENTER, a popup window will open;
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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.