First you’ll need to export all your photos to your computer via Instaport, a simple web application that will backup all your Instagram photos in a single zipped file. To export your Instagram photos and save them locally, go to the Instaport website, sign in with your Instagram ID and click ‘Yes’ to authorize Instaport’s access to Instagram.
Once access is granted and Instaport has found all your photos, you’ll need to choose some export options. Select ‘Download .zip file’ and choose to download all photos. Next click the ‘Start Export’ button.
It may take a long time for Instaport to complete your request. If you’ve been an Instagram user for a long time or have a few thousand images this could take very long time. Be patient. Once completed, click on the download link to download all of your Instagram photos into a zip file.
That was the easy part. The hard part is getting your images into Pressgram. Pressgram does not offer any bulk import feature so you’ll have to manually import each image via the Pressgram app.