One way is to send the image to yourself in messenger using your PC. Save it to your phone and then upload it to Instagram
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If you use Lightroom, there's a free plugin which works really well. LR/Instagram - Lightroom Publish Plugin for Instagram
If you use Lightroom, there's a free plugin which works really well. LR/Instagram - Lightroom Publish Plugin for Instagram
What if your workflow includes fishing in Photoshop to clone, work with layers, resize ect. ?