Cookies and browser storage

Last updated October 4, 2026

CaseFill uses no advertising, analytics or tracking cookies, and no third-party scripts. This page lists everything CaseFill stores in your browser and why. Because all of it is needed for the site to work, there is nothing to opt out of; you can erase it any time.

Cookies

• __Host-cfs (strictly necessary): keeps you signed in, for up to 30 days. It holds a signed session, not your case information.
• __Host-cfo (strictly necessary): set for up to 10 minutes while you sign in with Google, to protect the sign-in from tampering. It's removed when sign-in finishes.
• Our host, Cloudflare, can set a strictly necessary security cookie if its abuse protection is triggered. CaseFill doesn't read it.

Browser storage (not cookies)

Your cases are kept in your browser's own storage on this device. It's never sent to CaseFill or anyone else.

• IndexedDB ("casefill"): blank and filled PDFs you open or save, and documents and exhibits.
• Local storage: your cases and their details (cf.matters), saved field layouts (cf.tpl.*), your firm's details if you're a legal professional (cf.profile), the password lock settings (cf.vault, cf.keys), and small preferences: guided or full view (cf.mode), tips on or off (cf.tips), who's using CaseFill (cf.role), language (cf.lang), the last tab and document strip settings (cf.tab, cf.strip), checklist progress in the Self-Help Center (cf.helpck.*), the account that last used this browser (cf.owner), and the date you confirmed you're 18 or older and accepted the notice (cf.ack, cf.age18).
• Session storage: a link you were following when asked to sign in (cf.nexthash), removed right after.

How to erase it

• In CaseFill: My cases → Erase all data, or About & privacy → Delete all CaseFill data in this browser.
• From the account menu: Sign out and erase case data on this device (best on a shared computer).
• Or clear this site's data in your browser settings.

Erasing can't be undone. Save a backup first if you want to keep your cases.

Changes

If CaseFill ever adds a cookie that isn't strictly necessary, this page will be updated first and you'll be asked before it's set.

Contact

support@casefill.org