If you want to check that the image gets uploaded to the server, you can use the Net tab, and in there will be a POST or GET from the form being submitted. Its status will tell you if it was successfully received by the server.
If it's a POST, when you open that up there will be four tabs - Header, Post, Response, and HTML
The above example here is from uploading an image to tineye.com
The Post tab will contain the encoded image that was submitted to the server.
That's how you can confirm that the image is actually being sent from the client to the server. From there, things depend on the server to do its job correctly.