Instagram without installing anything
A browser page. No app, and no account.
By using this site you confirm you have the right to download the file you request.
Why the app stores are full of these
Instagram downloader apps are a crowded category because the permissions are valuable: storage, network, and very often clipboard access so the app can "detect" a copied link. That last one means it reads everything you copy, for as long as it is installed.
Several have shipped with ad SDKs that report what else is on the device. You cannot tell which from the listing, and the review that cleared version 3 does not cover version 9.
And none of them can see more than this page
A private account is private to an app too. What the app does that this does not is hold your session — which is the thing you should least want to hand over, and the only thing that would extend its reach.
Public posts and reels are what both can read. This one just does it in a tab.
Frequently asked questions
Do I need to log in?
No, and a post that requires it cannot be read here at all.
Does it work on iPhone?
Yes. Safari saves the file to Files, and you can move it into Photos from there.