JUN 6, 2022 VIDEO DOWNLOADS TEMPORARILY NOT WORKING. FREE ALTERNATIVE:
Firefox addon => Video Download Helper (with companion app installed)
Video Download Helper > Settings > Behaviour > Download Processor > Companion App (make sure you save)
To download videos, copy the link and open it in a new tab. Then click on the Video Download Helper Icon
DOWNLOAD PROGRESS NOT SHOWING FOR VIDEOS FIX:
Tampermonkey > Settings > Advanced > Download Mode > Browser API (make sure you save)
This script allows you to download Instagram photos and videos (incl. from albums). Note that there is no batch download option, though there MAY be something of the sort in the future. Additionally, this script was written without using ideas from per-existing download scripts, in hopes of bringing something fresh to the table. I also took extra care to make it as simple as possible to read and modular.
There will be a download button within the frame of any photo you open. Videos will have a download button, as well as a "Download Thumbnail" and "Open Thumbnail" buttons. Downloaded items will be named based on the the uploader's username, followed by "_" and the original filename. This will not only result in well-organized files, but you will also know what profile it was downloaded from.
Finally, I look forward to your feedback, and potentially improving this script.