How to Work Offline with Free Online Tools (PWA Guide)
What is a PWA?
A Progressive Web App (PWA) is a website that can be installed on your device like a native app. Once installed, it opens in its own window (no browser chrome), can work offline, and appears in your app launcher/dock. YantraKosha tools support PWA installation — giving you instant access to 40+ tools without needing an internet connection.
How to Install a PWA
**Chrome/Edge (Desktop):** Click the install icon in the address bar, or go to Menu > Install app. **Chrome (Android):** Tap Menu > Add to Home Screen. **Safari (iOS):** Tap Share > Add to Home Screen. **Firefox:** Firefox support varies — look for the install prompt or use Chrome for the best PWA experience. Once installed, the tool opens like a native app with its own icon.
Which Tools Work Offline?
Tools that process data client-side work fully offline: calculators, text tools, JSON formatter, code generators, color tools, and more. Tools that require network access (API tester, IP lookup, DNS checker) need a connection for their core function but still load the interface offline. File-based tools (PDF, image) work offline for processing files already on your device.
Benefits Beyond Offline Access
PWAs aren't just about offline — they also load faster (cached resources), use less memory than browser tabs, get their own taskbar icon for quick access, can receive push notifications (if enabled), and provide a distraction-free environment without other browser tabs competing for your attention.
Managing Your PWA Tools
Installed PWAs update automatically when you're online — no manual updates needed. To uninstall, right-click the app icon and select Uninstall, or go to chrome://apps. Your data (localStorage) persists between app sessions. For the best experience, keep your browser updated — PWA features improve with each browser release.