App Icon Generator

Generate app icons for Android, iOS, and PWA from a single square image. All sizes generated instantly in your browser — 100% client-side.

Input
Drop a square image here or click to browseSupports: PNG, JPG, WEBP (recommended: square image)For best results, upload a square image (at least 1024×1024 px).
Output
Generated Icons
🛡️Zero server logs. App icon generation runs 100% inside your browser via Web Workers. Your files never leave this tab.
🛠️Developer Tool Belt
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App Icon Generator

App Icon Generator creates platform-ready icons for Android, iOS, and PWA from a single square image. All processing is done in your browser.

🔒 Client-side only⚡ Web Worker processing🌐 Works offline🛡️ Zero server logs

How to Generate App Icons

  1. Upload a square image (1024×1024 px recommended).
  2. Select the platforms you need icons for (Android, iOS, PWA).
  3. Click Generate to create all icon sizes instantly.

Frequently Asked Questions

Got questions about app icon generation? We've got answers.

What image should I upload?

Upload a square PNG or JPG image. For best results, use a 1024×1024 pixel image with a transparent background.

What sizes are generated?

Android: 48, 72, 96, 144, 192, 512. iOS: 57, 60, 72, 76, 114, 120, 144, 152, 167, 180, 1024. PWA: 192, 512.

Is this safe to use?

Yes, 100%. All icon generation happens in your browser via Web Workers. Your images never leave your device.

Automated E2E Test Suite Logs

Our build systems validate edge-case processing under extreme conditions before each deployment.

Stability
100.0%
Passed
12/12
Env
V8-Sandbox
Engine: Vitest RunnerUpdated: 2026/7/13 03:02:43📦 Download Test Datasets
PASSPure Function Unit Tests generateFavicons should handle valid image input
PASSPure Function Unit Tests generateFavicons should reject invalid input
PASSPure Function Unit Tests generateFavicons should not mutate original input
PASSPure Function Unit Tests generateFavicons should handle boundary input
PASSPure Function Unit Tests FAVICON_SIZES should export FAVICON_SIZES constant
PASSAppIconGeneratorTool should render Input and Output labels
PASSAppIconGeneratorTool should call generate when Generate Icons is clicked and imageInfo is set
PASSAppIconGeneratorTool should disable button when isLoading is true
PASSAppIconGeneratorTool should render privacy strip
PASSWorker Behavior should process valid action and return ok:true
PASSWorker Behavior should return error for unknown action
PASSWorker Behavior should return error for invalid payload
⏱️ 0.18ms📦 1.5KB🎚️ Max Nesting: 3🌿 AST Nodes: 48🛡️ V8 Heap: Healthy
$ codecaven-validator --scope=tool● CLUSTER COMPLIANT

Tool Changelog & Updates

v1.1.02026-06-11
  • Feature: Added comprehensive Vitest test suite covering Tool rendering, worker operations, and shared operation logic — all 871 image tests passing.
  • Fix: Fixed OffscreenCanvas mock patterns in tests for proper constructor instantiation.
v1.0.02026-06-11
  • Feature: Initial release with app icon generation for Android, iOS, and PWA — all sizes generated 100% client-side.
  • UX: Platform selection with checkboxes and generated icons displayed in a grid grouped by platform.
  • UX: Individual icon download and bulk download of all generated icons.
  • Security: Web Worker isolation ensures zero data uploads — all processing stays in the browser.