Answer

Do PWAs improve conversion rate?

Short answer

Yes, when users actually install. Published case studies (Alibaba, Twitter Lite, Pinterest, Uber, BookMyShow) show 30-100% conversion lift after PWA adoption — driven by faster loads, offline support and home-screen install. The effect is largely from install: once your icon sits on the home screen, return sessions jump.

By InstantPWA growth research·Reviewed July 22, 2026

Where the lift comes from

Two levers: (1) faster loads (service-worker cache) improves same-session conversion, and (2) home-screen install shortens the path to return visits, which are always higher-intent than first-touch.

The install is the unlock

A PWA without installs performs the same as a mobile website. The measurable ROI comes from the install rate — which is what a well-timed install prompt drives.

Realistic expectations

Expect 3-8% install rate on mobile with a well-timed prompt, and 20-40% higher LTV for installed users vs anonymous mobile visitors.

Sources

What is a PWA?

A PWA (Progressive Web App) is a regular website that meets three technical criteria — HTTPS, a Web App Manifest and a service worker — so browsers let visitors install it on their home screen. Once installed, it launches like a native app, works offline and can send push notifications.

Why is my PWA install prompt not showing?

Chrome shows the install prompt only when the site passes strict installability criteria: HTTPS, a valid manifest with name, icons and start_url, a registered service worker with a fetch handler, and the user has not previously dismissed the prompt. Any one of these missing is enough to block the prompt entirely.

Can PWAs read and write files?

Yes on Chromium browsers (Chrome, Edge, Opera). The File System Access API lets a PWA open, read, edit and save files with the user’s permission — Figma, VS Code Web and Excalidraw use it in production. iOS Safari and Firefox fall back to the standard `<input type="file">` and downloads.

Can PWAs use Bluetooth?

Partially. The Web Bluetooth API works on Chrome, Edge, Opera (desktop and Android) and Samsung Internet — enough to connect to BLE peripherals like heart-rate monitors, printers and IoT devices. iOS Safari and Firefox do not support it, and Apple has stated no intent to ship it.

What is a Web App Manifest?

A Web App Manifest is a JSON file — usually manifest.webmanifest — that declares your app’s name, icons, start URL, theme colour and display mode. Browsers read it to decide whether to offer the install prompt and what icon and name to show on the home screen.