I share here a workaround to insert web images in the Confluence Cloud new editor.
Problem description
The New/Fabric Editor in Confluence Cloud does not offer the possibility to insert an image from the Web by URL. See [CONFCLOUD-65749] Ability to add Images from web in the new editor - Create and track feature requests for Atlassian products.
Workaround
A workaround described here: Guide to Insert a Web Image Using the New Confluen... (atlassian.com) is to wrap the image link into a markdown syntax: and paste this markdown plain text in the editor.
It will then be interpreted by the editor.
Workaround solution (AutoHotkey)
I have implemented this in the NWS PowerTool IntelliPaste feature.
On the press of a hotkey (Default Ins key), the script checks if the active window is a Confluence window and if the Clipboard content is a web image link. In this case it pastes and extended plain text version following the workaround:

This avoids having to do the transformation and multiple copy/pasting manually.
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If Confluence_IsWinActive() { | |
If RegExMatch(Clipboard, "^http.*\.(png|jpg|jpeg|gif)$") { | |
imglink =  | |
Clip_Paste(imglink) | |
return | |
} | |
} |