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PWA manifest.json Builder — Free Online Tool

Generate manifest + icons + theme color

Generate manifest.json for PWA (Progressive Web App). Name, icons, theme color, display mode, start URL, all required fields. Plus install-prompt JS snippet.

App basics

Icons

Optional

📄 manifest.json + HTML

↗ Generate maskable icons
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Learn more

PWA manifest.json Builder

Generate Web App Manifest (manifest.json). Required fields, icon sizes, maskable variants, optional shortcuts + screenshots. Plus HTML link-tag.

How to use this tool

  1. 1

    App basics

    Name, theme, start URL, display mode.

  2. 2

    Icons

    Icon sizes 192 + 512 + maskable.

  3. 3

    Output

    manifest.json + HTML link tag + install JS.

Frequently Asked Questions

Why PWA in 2026?
PWAs install like native apps on iOS, Android, ChromeOS, Windows. Works offline (with service worker). No app store fees. Better discoverability via web search. Apple finally added "Add to Home Screen" prompt support 2023. PWA is the most cost-effective way to ship cross-platform.
Required fields for installability?
Minimum: name, short_name, icons (≥192px + ≥512px), start_url, display ("standalone" or "fullscreen"), theme_color, background_color. Plus: HTTPS + service worker registered + valid manifest. Chrome DevTools → Application → Manifest shows compliance.
Maskable icons?
Adaptive icons that fill the entire frame on Android (where launchers crop the icon). Generate at 512×512 with safe zone (inner 80%). Add purpose: "any maskable" to manifest. Tools: maskable.app shows preview. Without maskable, your icon may look small / cropped.

Key Takeaways

  • PWA manifest.json Builder is a free, browser-based seo & web tool — generate manifest + icons + theme color.
  • No signup, no downloads, no file uploads — your data stays on your device.
  • Works on desktop, tablet, and mobile. Install as a PWA for offline access.

How to Use PWA manifest.json Builder

  1. Open the tool: Launch PWA manifest.json Builder on Toololis — no account or download needed.
  2. Enter your data: Paste text, enter values, or select a file directly in your browser.
  3. Get instant results: Everything is processed locally — results appear immediately.
  4. Copy or download: Save your output or share it. Bookmark for quick access next time.

PWA manifest.json Builder — Quick Facts

Price
Free — no limits, no watermarks, no paywalls
Privacy
100% browser-based — no data is sent to any server
Platform
Any modern browser on desktop, tablet, or mobile
Category
SEO & Web Tools on Toololis
Offline
Works offline after first visit (Progressive Web App)
FeatureDetails
ToolPWA manifest.json Builder
CategorySEO & Web
Signup RequiredNo
File UploadNone — processed in browser
Mobile SupportFully responsive
CostFree forever

Why Use PWA manifest.json Builder?

You should try PWA manifest.json Builder for a quick, private way to generate manifest + icons + theme color. All processing happens in your browser. Your files and data never leave your device. According to web.dev, client-side processing is the gold standard for privacy.

On the other hand, dedicated APIs or desktop tools suit batch processing better. They also handle server-side automation. For everyday tasks, browser tools offer the best speed, privacy, and convenience.

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100% Privacy. This tool runs entirely in your browser. Your data is never uploaded to any server.