The short answer
No. Your data. Shrink it from its app; don’t delete the folder.
What is it?
~/ComfyUI/output holds every image and video generated by a manual ComfyUI install in your home folder. PNG files include the workflow that produced them. It grows with each run.
Everything you generated. Your work: offload or archive, never deleted automatically.
What happens if you delete it?
No. These are your results and cannot be recreated reliably, since generation depends on exact models, seeds and settings.
How to remove it properly
Move only the images you do not want to the Trash. To keep your work but free space, move the folder’s contents to an external drive or cloud folder and check the copy first.
Better moved to an external drive than deleted.
Before you delete it
Each PNG carries its workflow; deleting it loses that too.
How MoreRoom helps
MoreRoom recognises this as your data and never suggests deleting it. It shows how much space it takes, so you can shrink it from its own app.
Frequently asked questions
Can I delete the ~/ComfyUI/output folder?
No. Your data. Shrink it from its app; don’t delete the folder. No. These are your results and cannot be recreated reliably, since generation depends on exact models, seeds and settings.
Will ComfyUI generated images come back after I delete it?
No. No. These are your results and cannot be recreated reliably, since generation depends on exact models, seeds and settings.
How do I remove ComfyUI generated images properly?
Move only the images you do not want to the Trash. To keep your work but free space, move the folder’s contents to an external drive or cloud folder and check the copy first.