Privacy Policy

Wolfie Font Swapper does not collect, store, transmit, or sell any personal data. There is no analytics, no tracking, and no server owned by the developer. Everything you configure stays in your browser.

Last updated: 6 June 2026

• Local storage only. Your font selections, presets, per-domain rules and interface language are stored locally in your browser (chrome.storage / localStorage). This data never leaves your device and is never shared.
• Runs on the pages you visit (to apply fonts). A content script lets you (a) open the font panel from the toolbar icon, and (b) auto-apply the per-domain font rules you saved when you revisit those sites. To do this it reads only the page's hostname (to match your rules) and injects CSS to restyle text. It does not read, collect or transmit the page's content, your history, or anything you type.
• Google Fonts. When you preview a Google font, your browser fetches the font CSS/files from fonts.googleapis.com / fonts.gstatic.com and catalog metadata from fonts.google.com. These requests go from your browser to Google; the extension adds no personal data.
• System fonts. With your one-time browser permission (Local Font Access API), the extension reads only the names of fonts installed on your system to populate the picker. This list stays on your device.
• Pro subscription (optional) — ExtensionPay. If you upgrade to Pro, payments are handled by ExtensionPay (which uses Stripe). ExtensionPay processes your email and payment details on its own servers — the developer never sees your card data. The free tier never contacts ExtensionPay for billing. See ExtensionPay's and Stripe's privacy policies for details.

• activeTab, scripting — open the panel and apply/remove the font preview on the page you are viewing.
• storage — remember your selections, presets, per-domain rules and language locally.
• Content script on all sites (<all_urls>) — required so saved per-domain font rules auto-apply when you revisit a site, and so the panel can open on any page. It only matches the hostname and injects CSS; no page content is read or sent.
• host_permissions: fonts.googleapis.com, fonts.gstatic.com, fonts.google.com (preview Google fonts + catalog) and extensionpay.com (Pro subscription only).

We do not sell your data. The only data that leaves your device is: (1) the standard Google Fonts requests your browser makes to Google when you preview a font; (2) — only if you allow analytics on this website — usage data sent to Google Analytics and WolfieEye; and (3) — only if you opt into Pro — your email and payment details to ExtensionPay/Stripe. The extension itself sends nothing. See Google's Privacy Policy for how Google processes Analytics data.

This page (the website, not the extension) uses privacy-first analytics — WolfieEye (cookieless) and Google Analytics — but only after you allow it, and never if your browser sends a Do-Not-Track (or Global Privacy Control) signal. Until you consent, no analytics cookies are set. If you allow it, Google Analytics may set its own cookies and send usage data to Google, while WolfieEye stays cookieless. You can decline, and your choice is respected. This has no effect on the extension, which tracks nothing.

This product's access to and use of information from the pages you visit adheres to the Chrome Web Store User Data Policy, including the Limited Use requirements. The extension accesses page content only to provide its font preview/swap feature and to auto-apply your saved per-domain rules; it does not collect, transmit, or sell browsing activity, and does not use data for advertising or profiling.

Commercial font names shown in the extension are trademarks of their respective owners, referenced only to link to the official seller; the extension is not affiliated with or endorsed by any foundry and bundles no commercial font files. "Buy" links may be affiliate links (the developer may earn a commission). The extension's own code is MIT; bundled third-party components keep their own licenses (ExtPay.js — AGPL-3.0; Rubik & Audiowide fonts — SIL OFL 1.1).