Instagram is the best online mobile photo-sharing app, this social networking service enables its users to take pictures and videos, and share them either publicly or privately on the app. The stat shows that Instagram had reached 600 million monthly active users.
Despite its success, a key function is missing: we can't actually upload any photos to Instagram from your PC/Mac. There is also no way to upload photos from the website either and no dedicated app for Mac OS X.
The solution is the free Android emulator Bluestacks App Player which enables you to upload photos to Instagram from your PC or Mac.
#Log In and Set up BlueStacks
Click continue at the bottom and then log using your Google account.
Agree on terms of service and click on "OK".
Then, you've got optional checkboxes: Only for Instagram uploads or other options.
#Upload a photo
Select the folder icon from the left menu and select from your PC.
Under "complete action using", select Instagram and log in using your usual details.
The Mobile app will load on your desktop like it would do on your phone.
#Filter and Share!
Source (c): TechRadar.com