How can I put my logo on a picture?

How can I put my logo on a picture?

https://www.youtube.com/watch?v=0jogs6ohXiI

How do I put a logo on my iPhone pictures?

Open Photos and choose a photo you want to watermark. Tap Edit. Tap the three dots in the upper right corner of your screen and choose Markup. From the bottom menu, choose how you want to add your watermark.20 Dec 2019

How can I watermark my photos for free on my iPhone?

https://www.youtube.com/watch?v=jfYFBL1WzGQ