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Learn to turn HTML into Android apps

In-depth guides on building, fixing and publishing Android apps made from HTML — offline apps, HTML5 games, frameworks, signing and Google Play.

Start here

14 min read

HTML to Android app — the complete guide

The pillar guide: every route from HTML to an installed Android app, how it works inside, and what it takes to reach Google Play.

Build

9 min read

Build an offline HTML app

Bundle every asset, keep data on the device, and make the online-only parts fail gracefully.

7 min read

Prepare a ZIP for APK conversion

Structure, paths, names, size — everything to check before you upload a ZIP.

7 min read

Reduce the size of an HTML APK

Media is the size, JavaScript is the speed. The fixes that matter, with typical savings.

Troubleshoot

8 min read

Fix a blank screen in an HTML APK

Nine causes, ordered by how often they happen, each with a two-minute check.

Games

10 min read

HTML5 game performance on Android

Resolution, draw calls, garbage and audio — what decides the frame rate of a packaged HTML5 game.

Publish

11 min read

Play Store requirements for HTML apps

AAB, target API, minimum functionality, Data safety, the 12-tester rule — and why HTML apps get rejected.

8 min read

Android signing keys, explained

Upload key, app signing key, keystore, SHA-256 — what each is and the one rule you must not break.

7 min read

Install and test an APK on your phone

Sideload safely, decode 'App not installed', then run the 15-minute device test.

Frameworks

7 min read

Routing for React, Vue and Angular apps

History-mode routes need a server that an APK does not have. Switch to hash routing in one line.

Features

8 min read

Push notifications for HTML apps

Web Push is not available in a WebView. Native push via OneSignal is — here is how it fits together.

Reference

9 min read

JavaScript APIs in an Android WebView

Storage, camera, location, files, share, push, downloads — what works, what needs a permission, and what to do instead.

Your HTML is one upload away from an app

Install the free builder, drop in your HTML file or ZIP, and download a signed APK in a few minutes. No watermark, no card, no Android Studio.

Build my APK free