Favicon & PWA Checker

Verify your website's favicon setup, web app manifest, service worker, and Progressive Web App readiness with a single scan.

Favicon checkPWA manifestService worker~5 seconds
This tool analyzes the single URL you enter, not your entire website.
Analyzing... Checking favicons, manifest, and service worker

What We Check

13 checks across favicons, web app manifest, and PWA requirements.

Favicon

Standard favicon is present

Svg Favicon

SVG favicon found for modern browsers

Apple Touch Icon

Apple touch icon configured for iOS

Theme Color

Theme color meta tag is set

Web Manifest

Web app manifest file is linked

Manifest Name

Manifest includes app name

Manifest Start Url

Manifest defines a start URL

Manifest Display

Manifest display mode is set (standalone or fullscreen)

Manifest Icons

Manifest includes required icon sizes

Manifest Colors

Manifest defines theme and background colors

Service Worker

Service worker is registered

Viewport

Viewport meta tag is properly configured

Https

Site is served over HTTPS

Frequently Asked Questions

Common questions about this tool.

What favicon formats should I have?
At minimum, you need a standard favicon.ico for legacy browsers, an SVG favicon for modern browsers (it scales perfectly and supports dark mode), and a 180x180 Apple touch icon for iOS devices. Adding a theme-color meta tag completes the set by styling the browser's address bar.
What makes a website a Progressive Web App?
A PWA requires three things: HTTPS, a valid web app manifest with name, start_url, display mode, and icons, and a registered service worker. When all three are present, browsers can offer the "Install" or "Add to Home Screen" prompt, letting users launch your site like a native app.
Do I need a service worker if I don't want offline support?
A service worker is required for PWA installability, but it does not have to provide full offline support. Even a minimal service worker that caches the app shell or shows a custom offline page is sufficient. Service workers also enable push notifications and background sync, which add value beyond offline capability.

Check Your PWA Readiness

Make sure your favicons are complete and your site is ready to install as a Progressive Web App.

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