App Icon vs Favicon: What's the Difference?
They look similar, but serve different purposes. Here's when to use each and how they work together.
Quick Answer
Favicons appear in browser tabs, bookmarks, and search results. App icons appear on home screens when users install your web app as a PWA. Both are essential for a complete web presence.
Side-by-Side Comparison
| Aspect | Favicon | App Icon |
|---|---|---|
| Primary Use | Browser tabs, bookmarks, search results | Home screen, app switcher, app stores |
| Where Users See It | Desktop browsers, mobile browsers | iOS home screen, Android launcher |
| Typical Sizes | 16×16, 32×32, 96×96px | 180×180, 192×192, 512×512px |
| File Format | ICO, PNG, SVG | PNG (often maskable) |
| Defined In | HTML <link> tags | manifest.json |
| Required For | All websites | PWAs, installable web apps |
What is a Favicon?
A favicon (short for "favorite icon") is the small icon that appears in browser tabs, bookmarks, browser history, and search engine results. It's your site's visual identifier in the browser.
Common use cases:
- Browser tab identification
- Bookmark visual recognition
- Search result branding
- Browser history icons
- Desktop shortcuts (Windows)
<link rel="icon" href="/favicon.ico">
What is an App Icon?
An app icon is the larger icon that appears on a user's home screen when they install your web app as a Progressive Web App (PWA). It represents your app as a standalone application.
Common use cases:
- Home screen launcher
- App switcher/multitasking
- Notification badges
- App store listings
- Splash screen branding
manifest.json: "icons": [{"sizes": "192x192"}]
Key Differences Explained
1. Size Requirements
Favicons are typically small (16×16 to 96×96px) because they appear in compact spaces like browser tabs. They need to be recognizable at tiny sizes.
App icons are much larger (180×180 to 512×512px) because they're displayed prominently on home screens. They can include more detail and are often designed with maskable variants for different device shapes.
2. Context of Use
Favicons are always visible when browsing—they're part of the browser interface. Users see them constantly as they navigate between tabs and sites.
App icons only appear after installation. They represent your app as a standalone entity, separate from the browser. Users tap them to launch your app in fullscreen mode.
3. Technical Implementation
Favicons are declared in HTML using <link> tags in the document head. Multiple sizes can be specified for different contexts.
App icons are defined in manifest.json, which is referenced by the HTML. The manifest also includes other PWA metadata like app name, theme colors, and display mode.
Do You Need Both?
Yes, you should have both. Here's why:
- Favicons are essential for all websites—they improve brand recognition in browser tabs and search results.
- App icons are required if you want users to install your site as a PWA. Without them, install prompts won't appear and the home screen experience will be poor.
- They can share the same design, but should be optimized for their respective sizes and contexts.
Best Practices
Favicon Design Tips
- Keep designs simple—details get lost at 16px
- Use high contrast for visibility
- Test at multiple sizes (16×16, 32×32, 96×96)
- Consider using SVG for crisp scaling
- Ensure it works on both light and dark backgrounds
App Icon Design Tips
- Design for 192×192px minimum (512×512px recommended)
- Create maskable variants for Android
- Ensure safe zone (inner 80%) contains critical elements
- Use consistent branding with your favicon
- Test on actual devices for best results
Generate Both in One Click
Our favicon generator creates all the sizes you need for both favicons and app icons, plus a complete manifest.json file.
Generate Your Icons