1. Did you see the pictures in my homepage?

2. Did you see the pictures on my homepage?

3. Did you see the pictures over my homepage?

4. Did you see the pictures through my homepage?

(Which prepositions can we use? Are they all grammatical?)

#2 is correct; the others are incorrect.

i think it is #2 because the others dontmake sense if you read them closely

Out of the four options you have mentioned, the most grammatically correct preposition to use in this context would be "on."

1. Did you see the pictures in my homepage?
2. Did you see the pictures on my homepage?
3. Did you see the pictures over my homepage?
4. Did you see the pictures through my homepage?

The first option, "in my homepage," is less common because it implies that the pictures are physically inside the homepage, which is not typically the case.

The second option, "on my homepage," is the most natural and commonly used phrase. It suggests that the pictures are displayed on the surface of the homepage or appear on the webpage.

The third option, "over my homepage," is less common and might suggest that something is physically covering or obstructing the homepage, making it difficult to see the pictures.

The fourth option, "through my homepage," suggests that someone must navigate or interact with the homepage in some way to access the pictures, but it does not imply whether the person actually saw the pictures or not.

So, to summarize, the most appropriate preposition to use in this context is "on," as in "Did you see the pictures on my homepage?"