How about paint.net ? Free, easy to use, still powerful.
Well i have used paint.net in the past, But that’s the neat part about a specified tool like this is that you can just click checkboxes and choose which data needs to be censored. much cleaner and quicker than opening paint.net and doing that manually.
If this was built into Bitwarden, i could easily have it stored and open trough bitwarden and select what to cross out and which text to watermark it.
See some screenshots of the tool with a fake id card
This tool is designed specifically for Belgian id cards, but obv if Bitwarden made something similar, you could easily create layouts for all kinds of identity cards