Q&A for How to Add Pictures to iPhone Notes

There is no limit. The only limit is how many photos your phone can effectively display and load at a time. So if you have an older (slower) phone, you won't be able to have as many photos as if you have a newer (faster) phone.

Yes. Once you take a picture in your note's app, hold down the picture and click "view as". From there you can either choose large or small. It does not let you shrink it to a custom size, only those two sizes.

Tap and hold the image. Doing this gives you some options. The delete button will be at the bottom in red.

You can't easily shrink videos like photos because videos are more complex, containing many frames and audio, making them harder to resize without special tools. To shrink a video, you can use apps or tools like VLC Media Player or HandBrake to compress it by adjusting settings like resolution and frame rate.