Cookie Policy
Last updated: July 2026
This policy explains what cookies DocButterfly uses, why, and how you can control them.
What is a cookie?
A cookie is a small text file stored in your browser by a website. Cookies are used for many purposes — from keeping you logged in to tracking your behavior across sites. We only use the first kind.
Cookies we use
DocButterfly uses first-party cookies only — set by this site, read only by this site. Most are essential and cannot be switched off; the rest are listed below so you can see exactly what they hold.
| Cookie Name | Purpose | Type | Duration |
|---|---|---|---|
.AspNetCore.Identity.Application |
Keeps you logged in to your account. Without this cookie you would need to sign in on every page. | Essential | Session / 14 days (if "Remember me" is checked) |
.AspNetCore.Antiforgery.* |
Security token that prevents cross-site request forgery (CSRF) attacks when submitting forms. | Essential | Session |
dbf_first_touch |
Records how you arrived at this site — the site that linked to you (its address only, never the page) and any campaign tags in the link you followed — so we can tell which of our channels people find us through. It contains no identifier, is never read by anyone else, and is deleted as soon as you create an account. If you do not create an account it disappears when you close your browser. | Functional | Session |
sso_probed |
Records that we have already tried once to sign you in silently with your existing Microsoft session, so the sign-in page cannot loop. | Essential | Session |
cookie-notice-dismissed |
Remembers that you have dismissed our cookie notice so it does not appear on every page. Stored in localStorage, not a cookie. |
Functional | Permanent (until browser storage is cleared) |
Cookies set by third parties
We do not embed any third-party service that sets cookies on our site. If that changes — for example when we introduce a payment processor — we will update this policy before it goes live.
How to manage cookies
Because we set no advertising or third-party cookies, there is nothing to opt out of on our site. If you wish, you can configure your browser to block or delete all cookies; the site still works, but you will not be able to stay logged in.
Changes to this policy
If we ever add non-essential cookies (such as analytics), we will update this policy and add a consent mechanism before setting those cookies.
Contact
Questions? Email privacy@docbutterfly.com