Plenary Studio Cookie Notice
Last updated: 23 July 2026
The short version: Plenary Studio does not use advertising, analytics, or tracking cookies. In fact, we set no first-party cookies at all. Everything we store in your browser is there to make the service work or to remember your own settings. UK law (the Privacy and Electronic Communications Regulations, PECR, as amended by the Data (Use and Access) Act 2025) does not require consent (or a consent banner) for storage that is strictly necessary or that only adapts a service's appearance or functionality to your own preferences, so we do not show one. Two narrowly-scoped third-party tools can set their own cookies in specific situations, explained below. This notice sets out what little is stored, in the interest of being straightforward.
What we store in your browser
We use your browser's local storage (not cookies) for two things:
1. Keeping you signed in (strictly necessary).
A single entry (named sb-…-auth-token) holds your sign-in session. Without it you would
have to log in on every page. It is created when you sign in and removed when you sign out.
2. Remembering your preferences (functional). Entries that remember choices you have made so you do not have to make them again, for example: your light/dark theme, presenter display theme, export font, presenter layout and zoom settings, which in-app walkthroughs you have already completed, and short-lived local drafts of work in progress so an accidentally closed window does not lose your edits. These stay on your own device. This storage sits within PECR's exception for adapting the appearance or functionality of a service to your preferences (Schedule A1 to PECR, added by the Data (Use and Access) Act 2025), which asks us to tell you clearly what is stored (this notice) and to give you a free and easy way out. Your opt-out: clear these entries at any time through your browser settings; the app simply falls back to defaults, and nothing stops working except the remembered preferences themselves.
Our marketing site (the public pages of plenarystudio.co.uk) stores nothing of ours in your browser. The one exception on those pages is the contact form, where Cloudflare Turnstile (described below) may set its own cookies while checking that the form is not being submitted by a bot.
Third-party services that may set their own cookies
Two narrowly-scoped third parties can set their own cookies:
- Cloudflare Turnstile: the bot-protection check on our sign-in and registration pages, and on the contact form on our marketing site. It is a security measure (strictly necessary) and may set its own cookies from challenges.cloudflare.com while performing the check.
- YouTube: if you choose a video clip inside the service, it plays in an embedded player. We use YouTube's privacy-enhanced mode (youtube-nocookie.com), which means YouTube sets no cookies unless and until you press play on a clip. Pressing play is your choice to load Google's player, which may then set cookies under Google's own policies. If you do not play a clip, no YouTube cookies are set.
If this ever changes
If we ever add analytics or any other non-essential storage, we will update this notice before anything is switched on. PECR (as amended by the Data (Use and Access) Act 2025, in force 5 February 2026) now permits some first-party statistics without consent, provided users are told clearly and given a free opt-out; anything beyond that, and anything used for advertising or cross-site tracking, still requires consent, and we would introduce a proper consent mechanism before using it.
Questions: hello@plenarystudio.co.uk