How to post on Instagram from computer?

Do you want to post the post on Instagram from your desktop or laptop? As you login to your Instagram using the computer browser, there is no plus sign button to post the post on Instagram. It will be quite easy to post the post on Instagram from the computer because we do all editing and graphic of the image in our computer and to post it on Instagram if we have to move the image on our mobile device it will be quite a tedious process and image quality may also reduce which transferring the image.