Is 192x192 required for PWAs?

Yes. The manifest.json specification requires at least a 192x192 icon for the app to be installable on Android. Without it, the browser's 'Add to Home Screen' prompt won't trigger.

Can I use the same PNG for both 192x192 and 512x512?

No — they must be separate files at their actual sizes. Using a 512x512 file for both sizes by relying on the browser to scale it down reduces quality. Generate each size properly.

What display format goes in manifest.json?

Use 'standalone' for a full-screen app experience that hides the browser UI, or 'browser' to show the browser address bar. Most PWAs use standalone.

Does a regular website need manifest.json?

Not strictly. Manifest.json is primarily for Progressive Web Apps. However, having one can improve how your site appears in some search engine results and enables the 'Add to Home Screen' prompt on Android even for regular sites.

PWA Manifest Icons: 192x192 and 512x512 Explained

Why PWA Icons Are Different From Favicons

Standard favicons (16x16, 32x32) live in your HTML head and tell browsers what icon to show in tabs. PWA manifest icons are registered in your manifest.json file and tell the operating system what icon to show when the user installs your app to their home screen or app launcher. Both sets are needed for complete coverage. FreeFaviconGen generates both in one step.

The 192x192 Icon: Android Home Screen

The 192x192 icon is used by Android Chrome when a user adds your web app to their home screen. It appears in the app drawer alongside native Android apps. Some Android launchers apply a circular mask to icons, so keep important content centered.

The 512x512 Icon: Splash Screen and App Store

The 512x512 icon serves two purposes: it's the loading splash screen image when a PWA is opened, and it's used by Google in search results when displaying your PWA. This is your largest, most detailed icon. It's also used by Microsoft Store and Google Play when listing PWAs as apps.

Setting Up manifest.json Correctly

A minimal manifest.json for PWA icon support needs: name, short_name, icons (array with at least 192x192 and 512x512 entries), theme_color, background_color, and display. FreeFaviconGen generates a complete manifest.json snippet in the Code Snippets section after you generate your favicons.