Firefox als Linux-Alternative zu Microsoft Internet Explorer

Aktualisiert am 19. Oktober 2026

Unser Fazit

Firefox is a solid replacement for Microsoft Internet Explorer for most users. It handles modern HTML5, CSS3, and JavaScript just fine, and it imports bookmarks and passwords from IE. The browser is faster, more secure, and respects privacy. If you rely on legacy sites that require IE‑specific ActiveX or document modes, you’ll need to test those sites first. For everyday browsing, work, and even some legacy web apps, Firefox works well.

Funktionsabdeckung80%

Lizenz: MPL-2.0
Preis: Kostenlos
Aktuelle Version: 158.0.1 (19. Oktober 2026)
Bewertung: —

Firefox installieren Website ↗

Was gleich funktioniert

Both are web browsers that render HTML/CSS and execute JavaScript
Both can import bookmarks and passwords from IE
Both support extensions/add‑ons
Both offer cross‑platform sync
Both receive regular security updates

Was anders ist

Firefox does not support ActiveX controls or COM objects that some legacy IE sites depend on
IE’s proprietary rendering quirks (e.g., Quirks Mode) are not fully replicated in Firefox
Firefox lacks the built‑in Windows‑specific integration (e.g., IE’s integration with Office)
Firefox is open source; IE was closed source
Firefox may require manual configuration for some legacy sites that rely on IE’s user‑agent string

Ihre Microsoft Internet Explorer-Dateien öffnen

Firefox can open standard HTML, CSS, JavaScript, and image files that were created in IE. It does not natively open proprietary IE‑only files such as .htm files that rely on ActiveX or .xps documents. For exporting, bookmarks and passwords can be exported from IE and imported into Firefox via the import wizard. For other legacy data, manual conversion may be required.

Von Microsoft Internet Explorer zu Firefox wechseln – Schritt für Schritt

Export bookmarks and passwords from Internet Explorer using the Import/Export wizard.
Download and install Firefox from your distribution’s package manager or the official site.
Launch Firefox and run the Import wizard to bring over bookmarks and passwords.
Adjust Firefox’s user‑agent string in about:config if you need to access legacy sites that check for IE.
Install any required add‑ons for productivity or legacy site compatibility.
Test your favorite sites to confirm they work as expected.