Last updated 25 March 2026. Questions? legal@polldium.com
Effective date: 25 March 2026
This Cookie Policy explains what cookies and similar technologies Polldium uses, why, and how you can control them.
Cookies are small text files placed on your device by websites you visit. They are widely used to make websites work, remember your preferences, and provide analytics information to site owners. Similar technologies include local storage and session storage, which work in the same way.
These cookies are essential for the Service to function. They cannot be disabled without breaking core functionality. No consent is required for these under applicable law.
| Name | Provider | Purpose | Expiry |
|---|---|---|---|
| sb-*-auth-token | Supabase | Stores your authentication session so you remain logged in between page loads. HttpOnly and Secure — not accessible to JavaScript. | Session / 1 hour (refreshed automatically) |
| sb-*-auth-token-code-verifier | Supabase | PKCE code verifier used during OAuth sign-in (Google, Apple, X, Meta). Deleted immediately after sign-in completes. | Session |
| ph_* | PostHog | First-party analytics cookies that identify this browser, persist a distinct ID across visits, and support session replay. Set by posthog-js via our same-origin ingest proxy. | Up to 1 year |
| pld_ft | Polldium | First-touch campaign cookie (source, medium, campaign, content, id, landing poll). Written once on a poll permalink that has UTM parameters. Readable by JavaScript so analytics events keep the same combo after Google sign-in. Copied once onto your account if you sign up. Not HttpOnly; SameSite=Lax; scoped to .polldium.com. | 1 year |
| polldium_anon | Polldium | HttpOnly guest identifier used to store anonymous poll leans, page views, and signup-wall events in our own database. Linked to your account if you later sign up; deleted on signup or opt-out. Does not count as a real vote. | 180 days |
| polldium_anon_optout | Polldium | Records that you opted out of guest analytics so we do not set polldium_anon again on this browser. | 180 days |
Polldium uses PostHog for product analytics and session replay, and Cloudflare Web Analytics for aggregate traffic (page views, country, browser). PostHog sets first-party cookies (names starting with ph_) and may record a session of your visit with form inputs masked. We also set an HttpOnly polldium_anon cookie so we can store anonymous poll leans and signup-wall events in our own database; those leans never count as votes. We also set a first-touch pld_ft cookie (not HttpOnly, SameSite=Lax, 1 year) so the campaign that brought you to a poll permalink can be joined to a later sign-in.
You can opt out of PostHog capturing and the guest cookie at polldium.com/opt-out. Cloudflare Web Analytics remains cookieless.
Sentry may set a small session identifier in browser storage to correlate errors within a single session. This identifier is not used for advertising or cross-site tracking and is cleared when you close your browser tab.
You can opt out of product analytics, session replay, and the guest identifier at /opt-out. You can also control cookies through your browser settings. Disabling the Supabase authentication cookie will log you out and prevent you from signing in.
If we introduce new cookies or tracking technologies we will update this policy and notify you via an in-app notification before the change takes effect.
Questions about our use of cookies? privacy@polldium.com.