How does Tor Browser load favicons?

Tor Browser discovers favicons via link tags in the document head and default requests to /favicon.ico. This page lists supported formats and preferred sizes.

Does Tor Browser support SVG favicons?

Support varies by version and platform. Always provide PNG and ICO fallbacks even when shipping SVG.

Why is my favicon not updating in Tor Browser?

Browsers cache favicons aggressively. Hard-refresh, clear cache, or rename the file when testing changes in Tor Browser.

Favicon for Tor Browser

Tor Browser bases its engine on Firefox ESR with privacy hardening that disables many fingerprinting vectors but retains standard favicon fetching from the visited origin.

Engine

gecko

Preferred size

16×16

Formats

ICO, PNG

Supported formats

ICO favicon support
PNG favicon support
Preferred tab size: 16×16
Gecko rendering engine

Browser-specific quirks

Security levels above Standard may block mixed-content icons.
New Identity clears favicon cache instantly—users see fresh fetches often.
Onion services must serve icons from the same hostname.
Letterboxing does not affect favicon size in tabs.
No PWA install prompts—manifest icons are lower priority.

Generate your Tor Browser Favicon

Drag & drop your image here

PNG, JPG, or WebP. We recommend at least a 260×260px image. All processing happens entirely in your browser.

All browsers

Chrome, Safari, Firefox, Edge

All devices

iOS, Android, PWA

Complete package

ICO, PNG, SVG, manifest

Other browsers

Explore more favicon tools

Generate, convert, and validate favicons across our free tool suite.

Guides & articles

Browse favicon topics

Frequently asked questions

1How does Tor Browser load favicons?: Tor Browser discovers favicons via link tags in the document head and default requests to /favicon.ico. This page lists supported formats and preferred sizes.
2Does Tor Browser support SVG favicons?: Support varies by version and platform. Always provide PNG and ICO fallbacks even when shipping SVG.
3Why is my favicon not updating in Tor Browser?: Browsers cache favicons aggressively. Hard-refresh, clear cache, or rename the file when testing changes in Tor Browser.