It does!

If you want to actually digitally sign you can add a key in your OS and then go to "Tools -> Digitally sign" where you can choose a background image which you then can drag where you want to have it.

If you only want your written signature in there, you can create a stamp for it. Click on the arrow beside "Yellow Highlighter" (or whichever tool you have selected) in the top right corner. Select "Configure Annotations" and hit "Add...".

Make the type a stamp, give it a name like "Signature" and select an image you want to use. After that save and apply.

You can now select your stamp in the top right corner and place it anywhere by clicking or dragging over the PDF.

As a side note, depending on where you live a written signature in a PDF is meaningless at least in terms of legally binding documents.

I use this too daily (I am a sucker for looks), but hands down Okular is better.

I host many other things on that hardware. But it’s a small 1 litre pc. Sterling pdf is eating the least from there. I tried but I cant stop listing what i have. It is a 6 core gen 10 i5 w 32 gb RAM. Proxmox as hypervisor running two Debian VMs. I think I run 30+ services on it but again sterlingPDF is least of my concerns there. If you don’t have the hardware I genuinely believe you can run it locally without any issues or you can run it on a potato

Ah, so not the information panel then. I don't know of a single application that does image editing, pdf viewing, and scanning. There are applications for all three individually.