Web Manifest Generator Online Free
Use Web Manifest Generator online with a simple browser-based workflow.
or drag & drop your image or favicon here, or paste with Ctrl+V
π Multi-Dimension Output Previews (15 Sizes)
Google-compliant crisp favicon dimensions for all devices & platforms<!-- Google & Desktop Favicons -->
<link rel="icon" href="/favicon.ico" sizes="any">
<link rel="icon" type="image/png" sizes="32x32" href="/favicon-32x32.png">
<link rel="icon" type="image/png" sizes="16x16" href="/favicon-16x16.png">
<!-- iOS Safari Apple Touch Icon -->
<link rel="apple-touch-icon" sizes="180x180" href="/apple-touch-icon.png">
<!-- Android Chrome / PWA Manifest -->
<link rel="manifest" href="/site.webmanifest">
<meta name="theme-color" content="#2563eb">
Build Progressive Web App Manifests with Web Manifest Generator
Transforming a regular website into an installable Progressive Web App (PWA) requires a single central configuration file: the Web App Manifest (typically named manifest.json or site.webmanifest). This JSON-based document informs modern web browsers (including Google Chrome on Android, Microsoft Edge on Windows, and Safari on iOS) how your application should behave when saved to a user's home screen or installed as a standalone desktop application. Our Web Manifest Generator Online Free produces fully compliant, validated web manifest files with zero manual JSON coding required.
Without a valid web manifest file, browsers will not prompt visitors with an "Install App" banner, and your website cannot deliver a full-screen, native application experience. Our generator makes configuring this essential PWA file fast, accurate, and foolproof.
Key Manifest Properties Configured by Our Generator
Our generator guides you through every critical field mandated by W3C Progressive Web App specifications:
- Application Name & Short Name: Define your full brand name (used in app stores and splash screens) and a compact short name (under 12 characters, displayed on smartphone home screens).
- Display Mode: Choose between
standalone(looks like a native app with browser navigation hidden),fullscreen(for games and immersive media),minimal-ui, or standardbrowsertabs. - Start URL & Scope: Specify the exact landing page when the user launches your installed app (e.g.,
/or/app/) and security scope boundaries. - Theme & Background Colors: Match operating system status bars and native splash loading screens to your brand palette.
- Icon Declarations: Automatically registers standard 192x192 and 512x512 icons, plus maskable icons with safe zones for Android adaptive launchers.
- Orientation Preferences: Lock screen orientation to
portrait,landscape, or allow natural device auto-rotation.
Sample Web App Manifest Structure
{
"name": "My Progressive Web App",
"short_name": "MyPWA",
"start_url": "/",
"display": "standalone",
"background_color": "#ffffff",
"theme_color": "#3b82f6",
"icons": [
{
"src": "/android-chrome-192x192.png",
"sizes": "192x192",
"type": "image/png"
},
{
"src": "/android-chrome-512x512.png",
"sizes": "512x512",
"type": "image/png"
}
]
}
How to Generate Your Web Manifest File
Creating your valid PWA manifest takes three simple steps:
- Fill in App Details: Enter your App Name, Short Name, Description, and brand Theme / Background colors.
- Choose Display and Icons: Select your display mode (e.g., Standalone) and confirm icon filenames (e.g.,
/android-chrome-192x192.png). - Download or Copy JSON: Download the generated
site.webmanifestfile or click "Copy JSON" to paste it directly into your project directory. Link it in your HTML using<link rel="manifest" href="/site.webmanifest">.
Why a Valid Web Manifest is Crucial for PWA Success
Modern search engines favor websites that adopt progressive web app capabilities. Having a valid web manifest file unlocks Google Lighthouse PWA compliance, improves mobile user retention by enabling home screen installations, and creates offline-capable experiences when combined with a service worker. Using our Web Manifest Generator guarantees your JSON syntax is error-free and ready for production deployment.
Advanced Web Optimization and Technical Best Practices
To maximize the performance, discoverability, and search ranking potential of this tool's assets, follow these core technical recommendations. First, always configure robust HTTP caching headers on your web server or CDN (such as Cache-Control: public, max-age=31536000, immutable). Because static branding assets rarely change, long cache lifetimes ensure lightning-fast subsequent page visits and minimize unnecessary server roundtrips.
Second, ensure all visual elements conform to Google Core Web Vitals standards. By preloading essential visual resources using <link rel="preload"> and providing explicit width and height dimensions, you eliminate Cumulative Layout Shift (CLS) and accelerate Largest Contentful Paint (LCP). Regularly auditing your production assets with automated Lighthouse and web performance tests ensures your digital presence maintains peak speed, flawless visual fidelity, and top-tier search engine indexing across every device.
Frequently Asked Questions
What is a web manifest file in web development?
A web manifest (manifest.json or site.webmanifest) is a JSON file that provides information about a web application, including its name, icons, start URL, theme colors, and display mode, enabling browsers to install the site as a native-like app.
What is the difference between name and short_name in a manifest?
The "name" is the full title displayed on splash screens and install dialogs, while "short_name" is a concise abbreviation (recommended under 12 characters) displayed underneath the icon on mobile home screens.
Where should I save the generated manifest file in my project?
Save it in your website's root directory (or static assets folder) and link it in your HTML <head> using: <link rel="manifest" href="/site.webmanifest">.
What is a "maskable" icon in a web manifest?
A maskable icon is an Android adaptive icon designed with a safe central zone so the operating system can crop it into circles, squircles, or rounded squares without cutting off your logo.
Is this manifest generator completely free to use?
Yes. Web Manifest Generator is 100% free with no account creation, no limits, and instant file downloads.
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