Lightroom -

Since Lightroom doesn't have a native Instagram button on desktop, many users use third-party plugins like LR/Instagram to post directly from their catalog.

To post photos to social media platforms like Instagram directly from Adobe Lightroom , you can use built-in publish services, mobile app sharing, or specialized plugins to maintain image quality. Ways to Post from Lightroom Lightroom

In the Library module , use the Publish Services panel to set up connections to platforms like Facebook or Flickr. Once authorized, you can drag photos into these collections and click Publish to upload them. Since Lightroom doesn't have a native Instagram button