Spoiler Block

Privacy Policy ​

Last updated: May 30, 2026

The short version: The free version keeps your phrases and reading on your device — it sends no page content anywhere. Spoiler Block Plus sends the headline text and the site's hostname (never the full address or which pages you visit) to our service, which retains them with no account or user identifier attached. No tracking, no ads, and we never sell your data.

Spoiler Block ("the Extension", "we", "us") is a browser extension that blurs spoilery text so you can read the web without getting spoiled. This policy explains exactly what data the Extension handles and why.

What stays on your device ​

The following never leave your browser. They're stored using your browser's extension storage:

  • Your spoiler phrases — matched and blurred entirely on your device. They are never sent to our servers.
  • Your allow list of sites, your recency window, and your category toggles.
  • A local cache of recent classification results, so the same headline isn't looked up twice.

If you're signed in to your browser, your settings may sync across your own devices via your browser maker's built-in sync — they still never reach us.

What is sent to our service, and when ​

The free version sends no page content to our servers — spoiler matching runs entirely on your device. The automatic spoiler detection (Spoiler Block Plus) is the only part that sends page content to our service. When Plus is enabled, only on websites you have added to your allow list, it sends the visible text of candidate headlines on the page to our classification service to determine whether a headline refers to a recently released title (a show, movie, book, game, or sports result). Each such request contains:

  • the headline text being evaluated (batched and de-duplicated);
  • the website's hostname (e.g. example.com) — never the full page address or the specific pages you view;
  • an abuse-prevention key that protects the service from misuse. It does not identify you.

We do not send any headline text from sites that aren't on your allow list.

Separately, to manage Plus subscriptions, the extension contacts our payment provider, ExtensionPay, to check your subscription status (see Third parties). Those requests carry no page content.

How that text is used ​

Our service runs on Google Cloud. To classify a headline it hasn't seen before, it uses Google's Vertex AI (Gemini) with Google Search grounding to look up real release dates. We retain the submitted headline text along with its result (whether it references a datable title, plus the title's category and release date), so the next time anyone encounters the same headline the answer is instant. We also keep request logs — including the headline text and the hostname it came from — to operate and debug the service, monitor cost and quality, and prevent abuse. None of this is linked to your identity: there is no account, and we attach no user identifier to these records.

What we do not collect ​

  • No accounts or sign-up to use the free version, and we never collect your name. (Subscribing to Plus involves an email and payment details, handled by ExtensionPay and Stripe — see Third parties.)
  • No full page addresses (URLs), and no record of the specific pages you visit.
  • No advertising, no third-party trackers, and no analytics SDKs.
  • We never sell, rent, or share your data.

Third parties ​

We rely on a few service providers, and only for the purposes described here:

  • Google Cloud — hosts our classification service and provides the Vertex AI (Gemini) classification and Google Search lookups used by Spoiler Block Plus. It processes the headline text we send solely to return a classification. See Google Cloud's privacy notice.
  • ExtensionPay and Stripe — process payments for Spoiler Block Plus. When you subscribe, ExtensionPay manages your subscription and uses Stripe as its payment processor to handle billing. Your card details go directly to Stripe; we never receive or store them. See Stripe's privacy policy and ExtensionPay.

Data retention ​

Classification results and the headline text that produced them are cached with automatic expiration and refreshed over time; the durable catalog also stores public facts about titles (name, category, release date). Request logs that include headline text and hostname are kept only as long as needed to operate the service and prevent abuse. Because there is no account and no user identifier is attached to any of it, none of this is tied to you — there is no personal profile to retain or delete.

Limited Use disclosure ​

Spoiler Block's use of information received from its operation adheres to the Chrome Web Store User Data Policy, including the Limited Use requirements. Headline text is used solely to provide the spoiler-blurring feature, is not transferred to third parties except as needed to provide that feature (Google Cloud / Vertex AI), is never used for advertising, and is never sold.

Children ​

The Extension is not directed to children under 13 and does not knowingly collect personal information from anyone.

Changes ​

We may update this policy as the product evolves. Material changes will be reflected by the "Last updated" date above.

Contact ​

Questions about this policy or your data? Email support@getspoilerblock.com, or write to us at:

Spoiler Block
8334 Clairemont Mesa Boulevard
Ste 101 #200
San Diego, CA 92111
United States