SiteTailor is built on a privacy-first foundation: all CSS customizations, element selections, sticky notes, and theme overrides are processed locally in your browser and never transmitted to developer-operated servers.
SiteTailor does not collect, track, or sell your browsing activity. We do not use third-party tracking cookies or advertising networks. Your customized styles and annotations remain entirely under your personal control.
SiteTailor processes the following information entirely inside your browser client to deliver visual styling and annotation capabilities:
example.com) or URL path to which you attach a customization rule..btn-primary) and the associated CSS properties you choose to modify (e.g., font size, color, margin, padding, border).All data is saved utilizing Chrome's native extension storage APIs:
chrome.storage.sync): If you are signed in to a Google Chrome profile, Chrome synchronizes your custom rules across your devices through your Google Account under Google's standard encryption and privacy policies.chrome.storage.local): If sync storage reaches quota limits or sync is disabled in your browser, data is automatically stored locally on your device.SiteTailor adheres strictly to the Principle of Least Privilege. Every requested permission serves a direct, essential user function:
| Permission | Justification / Technical Purpose |
|---|---|
storage |
Enables persisting your CSS rules, theme overrides, annotations, and configuration preferences across browser sessions. |
activeTab |
Allows the visual inspector and editor to interact with the single web page tab that you actively choose to customize. |
scripting |
Allows injection of the visual editor interface, style sheets, and annotation canvas into the active tab upon explicit user activation. |
Optional Host Permissions (http://*/*, https://*/*) |
Enables instant re-application of your saved personal CSS rules early during page load (document start), preventing visual flash. Requested only on-demand when authorized by the user. |
SiteTailor offers optional premium features via ExtensionPay (extpay.js), a third-party merchant service powered by Stripe.
You retain complete ownership and control over all data created with SiteTailor:
SiteTailor is a general-purpose productivity developer tool and does not knowingly collect or solicit personal information from children under the age of 13.
If this Privacy Policy is updated, the changes will be reflected in this document with a revised "Last Updated" timestamp. Material changes will be noted in the extension changelog.
If you have questions, feedback, or concerns regarding this Privacy Policy or SiteTailor's data practices, please reach out via our support channels:
support@sitetailor.dev