Privacy Policy

Last updated: 18 August 2026

Quendel is a browser extension that lets you hide distracting elements on websites you choose, and keep those choices in sync across your devices. This page explains what information Quendel collects, why, and how you control it.

What we collect

If you never sign in, Quendel collects nothing beyond what stays on your own device. Signing in enables syncing your filters across devices, and turns on the following:

For each filter you create, when you're signed in:

  • the website and page where you hid something
  • the CSS selector of the hidden element, and a small set of attributes an author would put in their own markup (tag, id, role, class names, a few data/href attributes, ancestor context), used to re-find the element if the page's structure shifts slightly
  • if you hid a set of similar elements, which ones within that set you chose to keep visible
  • whether the filter is turned on, and whether the site is paused
  • the filter's name, one you typed, or a short label we generate from the element, which can include a little text from the page near it
  • when the filter was created, changed, or removed

If you send feedback:

  • your message
  • the domain of the site you were looking at when you sent it (not the full page URL)
  • your browser, operating system, and the extension's version
  • your account, so we can follow up (deleting your account keeps the message but disconnects it from you)

To sign you in, we use your email address (for a one-time sign-in code), or your Google account. If you use Google, we also receive your Google account's display name. Every account also has an internal account identifier of our own making, the same as any account-based product needs, regardless of how you signed in.

What we never collect

  • the text of the pages you visit, beyond the short filter label described above
  • anything you type, other than a filter name you chose
  • your browsing itself: we don't track which pages you visit, how long you spend on them, or where you navigate, on any site, including ones where you've created a filter. The only thing stored is the filter you made, the domain and page it targets, not a record of you visiting it

What's stored on your device

Quendel works without an account, and until you sign in, everything stays on your own device: your filters, which sites you've paused, your display preferences such as theme, and a little interface state so the panel looks the same when you come back to it. Signing in adds a record that you saw and agreed to this notice, and the bookkeeping needed to keep syncing in step.

Websites you visit cannot read any of it, and uninstalling Quendel removes all of it from your device.

How it's used

Solely to run the product: keeping your filters in sync across your devices, and using feedback you send to understand how people use Quendel and fix problems. We don't run any background tracking or analytics. Nothing about how you use Quendel is collected automatically, only what's listed under "What we collect" above, and only when you take the action that sends it. We don't build advertising profiles, and we don't sell or rent your data to anyone.

What's shared, and with whom

We use a small number of infrastructure providers to run Quendel. None of them get to use your data for their own purposes; they process it only to provide the service to us.

  • Supabase hosts the database and handles authentication.
  • Google is used only if you choose to sign in with a Google account, strictly for verifying who you are.
  • Resend delivers the sign-in email when you use an emailed code.

We do not share your data with advertisers, analytics companies, or data brokers.

Security

  • Your synced filters and account data are protected by row-level security in our database: your account can only ever read or write its own rows.
  • No password is ever created or stored for your account; sign-in is by a one-time emailed code or through Google.

Accessing, changing, and deleting your data

  • Your filters are visible and editable directly in Quendel's side panel on any signed-in device: rename, turn off, or delete any of them at any time, and the change syncs to your other devices right away.
  • Signing out stops syncing on that device without deleting anything from the server.
  • Deleting your account (in Quendel's Account view) is how you remove your data from our servers. It permanently and irreversibly deletes your filters and per-site settings. Feedback you've sent stays on file so we can keep improving the product, but is no longer linked to your account or any identifying information once the account is gone.

Retention

Filter and account data are kept for as long as your account exists, and removed when you delete your account. Feedback messages are retained after an account is deleted (see above) so we can keep learning from them, disconnected from anyone by that point.

Limited Use disclosure

The use of information received from Google APIs will adhere to the Chrome Web Store User Data Policy, including the Limited Use requirements. We use the Google sign-in only to verify your identity; we do not use it to read, collect, or share any other data from your Google account.

Changes to this policy

If what we collect or how we use it changes, we'll update this page and, for anything that affects what's synced, ask you to agree again inside the extension before it takes effect.

Contact

Questions about this policy, or about your data? Email [email protected].