Can I convert multiple PNGs at once?

Convert one icon at a time to keep the interface simple. Exporting takes less than a second, so iterating on variants stays fast.

Do I need to register or pay?

No accounts, paywalls, or watermarks—just a lightweight converter that runs locally.

Which browsers are supported?

Modern Chromium, Firefox, and Safari releases all support the Canvas APIs used for encoding ICO binaries.

How do I link the ICO on my website?

Place the downloaded file in your public directory and reference it with in the head.

Turn PNG Artwork into Pixel-Perfect Icons

Upload a square PNG, choose the sizes you need, and download a single .ico file that covers desktop, taskbar, and browser tab use cases.

Overview

Design teams bounce between design tools, dev environments, and marketing checklists. This converter closes the gap by packaging every required icon dimension into one ICO file without a round trip to another service.

The workflow is private by design. Conversions happen on-device, so you can iterate on unreleased app icons, prototypes, or game badges without leaking artwork. Paired with the Image Compressor, it becomes a full pipeline for launch assets.

Key features

Multi-size bundles
Generate classic 16×16, 32×32, 64×64, 128×128, and 256×256 icons in one go. Pick only the sizes you need to keep file sizes trim.
Transparency preserved
The converter respects alpha channels, so rounded corners and drop shadows render cleanly against any desktop wallpaper.
Offline-friendly workflow
No servers, no uploads, and no bandwidth usage—ideal for secure workstations or air-gapped environments.
Ready for web favicons
Download a standards-compliant ICO that you can drop straight into a favicon bundle alongside SVG fallbacks.

How it works

1
Prepare your source PNG
Start with a square PNG at least 512×512 pixels. Transparent backgrounds give you the cleanest results for browser tabs.
2
Upload and choose icon sizes
Use the checkboxes to select the resolutions your app or site requires. The tool can export one or many sizes simultaneously.
3
Convert and download instantly
Click “Convert & Download .ico” to save the bundled file locally. The action completes immediately because encoding happens in your browser.

Use cases

Launch-ready favicons

Ship a single favicon.ico that covers high-resolution displays, pinned tabs, and Windows tiles without juggling multiple exports.

Desktop app icon sets

Publish Windows and Electron apps with crisp icons for installers, taskbars, and notifications.

Internal tooling polish

Give internal dashboards, PWAs, and prototypes a professional finish with branded icons created in minutes.

Examples & tips

Create a favicon from brand artwork

Upload your PNG logo, select 32px, 64px, and 128px sizes, and download the ICO file to drop into /public of your Next.js project.

Generate icons for a Windows shortcut

Choose 48px and 256px outputs to cover Start Menu tiles and desktop shortcuts for an internal utility.

Rapidly test icon experiments

Iterate on colourways or gradients. Export new ICO files in seconds and swap them into your project without rerunning design exports.

Pro tips

Keep source artwork centred and avoid thin outlines that may blur at 16×16 pixels.
Pair the converter with the CSS Gradient Builder to test colourful icon backgrounds quickly.

Frequently asked questions

Can I convert multiple PNGs at once?: Convert one icon at a time to keep the interface simple. Exporting takes less than a second, so iterating on variants stays fast.
Do I need to register or pay?: No accounts, paywalls, or watermarks—just a lightweight converter that runs locally.
Which browsers are supported?: Modern Chromium, Firefox, and Safari releases all support the Canvas APIs used for encoding ICO binaries.
How do I link the ICO on my website?: Place the downloaded file in your public directory and reference it with <link rel="icon" href="/favicon.ico" /> in the head.

Resources & internal links

Related tools