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Cookie Policy

Last updated: 21 August 2026

What are cookies?

Cookies are small files a website stores in your browser to remember information (such as your chosen language) or keep you signed in. Local storage works the same way but is only read by the page itself. At HMI Library we use only what is strictly necessary or clearly functional — no advertising, no third-party analytics, no profiling.

Cookies and local storage we use

NameTypePurposeDuration
sb-*-auth-token Strictly necessary Keep you signed in (Supabase Auth) — needed to download, save symbols, publish, like, comment and post in the forum 1 hour (auto-refresh)
isa_lang Functional · preference Remember your selected language (site, icon library and Symbol Builder) Persistent (local storage)
hmi_lib_saved_symbols Functional Symbol Builder templates you save in your browser (no account needed) Persistent (local storage)
hmi_lib_saved_configs Functional Named style configurations (palette, typography) you save in the icon library editor Persistent (local storage)
isa_cart Functional Reserved; not used in the current flow (subscriptions are handled by Stripe) Persistent (local storage)
isa_lead_captured Functional Avoid re-asking for your email after a cheat-sheet download Persistent (local storage)
__cf_bm Strictly necessary · security Cloudflare bot management 30 minutes

We do not use marketing cookies, third-party analytics (e.g. Google Analytics) or profiling. Because we only set strictly-necessary and functional storage, no consent banner is legally required under the ePrivacy Directive / GDPR. If we ever add non-essential cookies, we will ask for your explicit consent first.

Third-party cookies during checkout

When you subscribe to a paid plan we redirect you to Stripe. Stripe sets its own cookies on its domain (stripe.com) to process the payment, prevent fraud and comply with PSD2/SCA. Those cookies are governed by Stripe's cookie policy.

How to manage cookies

You can disable cookies in your browser settings. Note that if you block strictly-necessary cookies you will not be able to sign in or use account features (downloads, cloud save, publishing, comments, forum). Preferences (language, locally saved builder templates) will then only last for the current session.

Browser guides:

More information

Questions? hello@hmilibrary.com. This policy complements our Privacy Policy.