If you share your watermarked pictures via Instagram app, you might be wondering, why posted pictures on Instagram looks so pixelated and blurred. The pictures before posting does look pretty good, so it seems to be a problem of Instagram app or server.
That can be fixed in Instagram app’s settings:
Just go to your profile page, open “Options” (three dots on the top right), then go to “Settings” / “Camera“, disable “Use High-Quality Image Processing” as showed below:
By the way, if you are using the free version of Add Watermark:
The sharing is much easier in the full version. Simply check the option “Share after saving” in the Save dialogue.