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Description
Open legacy sites that only render in Internet Explorer inside a Chrome tab: ActiveX, VBScript and IE document modes. Compat renders pages that only work in Internet Explorer — including ActiveX, VBScript, Adobe SVG Viewer, and classic MSHTML document modes — inside a Chrome tab on Windows. Users stay in Chrome. Compat hosts the real Windows IE engine (IWebBrowser2 / MSHTML) beside Chromium through a small native helper. No second browser window, and no rewriting of the page. A 14-day full-feature trial is included so you can confirm compatibility before buying. After the trial, a paid seat licence is required. WINDOWS 10 AND 11 Compat uses the MSHTML engine that still ships with Windows. It is intended for legacy intranet apps, OEM catalogs, and ActiveX workflows that Chromium cannot load on its own. FEATURES • Toolbar toggle — open the current tab with the IE engine (or press Alt+Shift+I) • Auto URLs — glob or regex rules that open matching sites in Compat automatically • Document modes — IE7 Quirks through IE11 (FEATURE_BROWSER_EMULATION) • Adobe SVG Viewer / ActiveX — 32-bit native host for classic controls • Exceptions — keep the IE engine off sites you do not want in legacy mode • Seat licensing — activate, deactivate, and move a seat to another PC • Enterprise Self-Deploy — signed CRX and your own update manifest (no Store surprises) PRICING • 14-day trial with every feature unlocked (tied to the PC; reinstalling does not reset it) • Individual from €29 per seat per year • Team and Enterprise volume seats, including Self-Deploy See https://compat.app/pricing/ WHY A HELPER INSTALLER? Chrome extensions cannot host Internet Explorer’s rendering engine by themselves. Compat installs a per-user Windows helper (LegacyTabHost.exe) that talks to the extension over Native Messaging and overlays a real MSHTML session on the tab. The helper needs no administrator rights. The first time you add Compat, Chrome opens a setup page that downloads the installer and checks that the helper is connected. FREQUENTLY ASKED QUESTIONS 1. Why do I have to install a helper .exe? The IE engine cannot be loaded from extension JavaScript. The helper is a 32-bit native process that creates IWebBrowser2 and attaches it to the Chrome tab. 2. Is the helper safe? It is scoped to the sites you open with Compat. Auto URLs and exceptions limit which pages use the legacy engine. Licensing and trial checks talk only to https://compat.app/. 3. Do I need a subscription? Yes, after the 14-day trial. Buy seats at https://compat.app/pricing/ or enter a licence key in Settings → License. 4. Does reinstalling reset the trial? No. The trial is bound to the machine device ID reported by the helper. 5. Can we deploy without the Chrome Web Store? Yes. Enterprise Self-Deploy ships a CRX and an update manifest you host yourself. See https://compat.app/enterprise/ 6. A page still looks wrong. Try another document mode (IE7 Quirks through IE11) from the Compat menu, then send the URL and the mode to support@compat.app. Privacy policy: https://compat.app/privacy/ Support: https://compat.app/contact/ Documentation: https://compat.app/docs/