Greenshot

Send To
Create a link from:

C:\Program Files\Greenshot\Greenshot.exe

%appdata%\..\Roaming\Microsoft\Windows\SendTo

Shell
greenshot-shell-edit.reg: Windows Registry Editor Version 5.00

[HKEY_CLASSES_ROOT\pngfile\shell\Edit with Greenshot\command] @="\"C:\\Program Files\\Greenshot\\Greenshot.exe\" \"%1\""

source: [FEATURE-616] Add "Edit with Greenshot" to Windows Explorer context menu - Greenshot JIRA - https://greenshot.atlassian.net/browse/FEATURE-616

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If you have IrfanView, then you will need to use this:

irfanview-greenshot-shell-edit.reg: Windows Registry Editor Version 5.00

[HKEY_CLASSES_ROOT\IrfanView.png\shell\Edit with Greenshot\command] @="\"C:\\Program Files\\Greenshot\\Greenshot.exe\" \"%1\""

This is because the default .png handler has been changed:

Windows Registry Editor Version 5.00

[HKEY_CLASSES_ROOT\.png] @="IrfanView.png"