Sort your saved posts by account and date, search them, filter by collection, mark the ones to remove, and export the list.
The data file above only lists your saved posts. To remove them in bulk, run this script on instagram.com while logged in. It scans your saved posts, you pick, it removes them slowly.
chrome://extensions → Developer mode → Load unpacked → pick the folder → click the icon on instagram.com.⚠️ Instagram may treat bulk actions as automation and block them for a while. The script works slowly (~5 s per post) and stops when Instagram pushes back. Spread big clean-ups over several days. Use at your own risk.
Your file is read by JavaScript in this page and is never sent anywhere. This site is not affiliated with Instagram or Meta.