OPTICAL POWER Install guide
App

Add the converter to your home screen and it runs like a native app — full screen, no browser bars, and fully offline after the first load.

iPhone & iPadSafari · iOS / iPadOS 16.4+
  1. Open the app's web address in Safari. (Add to Home Screen is a Safari feature — Chrome or Firefox on iOS won't show it.)
  2. Tap the Share button — bottom toolbar on iPhone, top bar on iPad.
  3. Scroll the share sheet and tap Add to Home Screen.
  4. Adjust the name if you like, then tap Add (top-right).
  5. Launch it from the new home-screen icon. It opens standalone and works without a connection.
AndroidChrome · Edge · Samsung Internet
  1. Open the app's web address in Chrome.
  2. Tap the menu (three dots, top-right). An Install banner may also appear on its own.
  3. Tap Install app (or Add to Home screen), then confirm Install.
  4. The icon lands in your app drawer / home screen. Open it to run full screen and offline.
  5. Edge and Samsung Internet work the same way: menu → Add page to → Home screen, or Install.
The page must be served over HTTPS for installation. Load it online once so the files are cached — after that it opens with no network. To update later, just reopen it while online.