Before you get your hopes up, I have to say first that this method isn't the most straightforward of the options on this list. Then, go to the Develop tab, select User-Agent and then iPhone Steps to upload the picture on Instagram from Mac 1) Open Instagram website on your Mac 2) It will open the mobile version of Instagram 3) Click on the + sign on bottom center of its displa How To Post On Instagram From PC And Laptop For Free 1. Here, mark a tick in the box, which says, Show Develop menu in the menu bar. Here's how Safari: How to Post on Instagram from Mac Through Safari Browser? Open the Instagram account and navigate to the Safari Browser Preferences and then select the Advanced option. Instagram doesn't natively support the ability to upload photos from a PC or Mac however, there are workarounds for those who wish to do so. Have you been wanting to use your favourite photo sharing social media application Instagram on your Mac and wish to know how to post on Instagram from Mac Browse for the image you'd like to post, select it and click Choose. Now, to use your Mac to upload your photos: Tap the + icon on the toolbar at the bottom of your Instagram feed. No more transferring from computer to cloud to mobile! If you work with high-quality images and videos, chances are you're creating content on a desktop or laptop. You can post to Instagram from a Mac or PC with the 3-second workaround we show you below.