Free PWA Manifest Generator — Create manifest.json Online

Turn any website into an installable app with a proper Web App Manifest. Fill in your app details, upload one icon (we resize it to the required 192×192 and 512×512 for you), and watch the manifest.json build live — then download it plus the icons and the HTML snippet that wires everything up. Everything runs in your browser; nothing is uploaded.

PWA Manifest Generator

Build a valid manifest.json with live preview — auto-resized icons and the install snippet included.

🌙 Dark

100% Free Forever No Sign-up No Credit Card Private — files never leave your browser Unlimited Use

1 App details & icon

App name *

Short name

Shown on the home screen — keep it under 12 characters.

Description

Start URL

Upload your app icon (PNG) one square PNG — we generate the 192px & 512px versions

icon-192.png

icon-512.png

2 Display settings

📱 Mobile app 🖥️ Desktop PWA 🎮 Game

Theme color

Colors the browser toolbar on mobile.

Background color

Splash-screen background while the app loads.

Display mode Standalone — app-like, no browser chrome Fullscreen — games & media Minimal UI — small browser controls Browser — normal tab

Orientation Portrait Landscape Any

Scope

Maskable icon purpose

Lets Android crop your icon into adaptive shapes — recommended.

3 Preview & download

Generate Manifest ⬇ Icons only

📄 Live manifest.json preview

🎉 Free forever. No sign-up. No credit card. No limits.

Generate manifests for unlimited projects — everything runs in your browser.

How it works

The tool reads your app details and builds a Web App Manifest object in your browser — the JSON file that tells browsers your site is installable, with its name, colors, display mode, and icon set. Your uploaded icon is resized to 192×192 and 512×512 on a canvas (the two sizes Chrome requires for the install prompt), and a live preview shows exactly what will be saved. Downloads are plain files generated locally; nothing leaves your device.

Everyday uses

• Site owners — make any website installable as an app in minutes.
• Freelancers — deliver a complete PWA starter pack (manifest + icons + snippet) to clients.
• Bloggers — let readers “install” your blog for one-tap return visits.
• Indie hackers — ship app-like experiences without app-store fees or reviews.

Frequently asked questions

Where do I put these files?

Save manifest.json and both icons in your site root, then paste the install snippet into your pages’ <head>. Serve everything over HTTPS.

Why do I need both 192px and 512px icons?

Chrome’s installability checklist requires at least a 192px and a 512px icon. The 512px one is also used for the splash screen.

Is anything uploaded?

No. Icon resizing, JSON generation, and downloads all happen locally in your browser.