Is it possible to view, like, and comment on Instagram photos on a desktop?

I have the Instagram app on my iPhone, and i love it, but sometimes i'd like to be able to zoom in and view the pictures in more detail. Is there a way that i can use Instagram and all it's basic features on my desktop without downloading anything?

Sometimes there's:

If a friend posts the picture on twitter or Facebook
Or
Take a screenshot and then enlarge the photo

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