Convert QOI to ICO Online Free

Drag & drop your .qoi file here, or click to browse

Converts to ICO in your browser · first daily conversion free · no signup

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Convert QOI images to ICO format instantly in your browser. ICO is the standard format for Windows favicons and application icons.

By ChangeThisFile Team · Last updated: March 2026

Quick Answer

ChangeThisFile converts QOI to ICO instantly in your browser using the Canvas API. No file upload needed — your image stays on your device. Drop your QOI and download the result in seconds. Free and completely private.

First daily conversion free No signup required Files stay on your device Instant conversion Updated May 2026

QOI vs ICO: Format Comparison

Key differences between the two formats

Feature	QOI	ICO
Purpose	Game assets and real-time images	Application and favicon icons
Multi-size support	No — single resolution	Yes — bundles multiple resolutions
Transparency	Full 8-bit RGBA alpha	Yes — 1-bit or 8-bit alpha
Browser support	No native support	Universal as favicon.ico
Software use	Game engines and custom tools	Windows apps, browsers, web
File size	Moderate	Small — icon-sized images
Best for	Fast-loading game sprites	Web favicons and Windows icons

When to Convert

Common scenarios where this conversion is useful

Create a website favicon from game art

Game projects often have pixel art or icon designs stored as QOI. Converting to ICO produces the favicon.ico file needed to display your icon in browser tabs and bookmarks.

Windows application icon generation

Windows applications require ICO format for their executable icon. Convert QOI artwork to ICO and embed it in your Windows app installer or executable.

Convert game sprite to system icon

Shortcut icons and system tray icons on Windows must be ICO format. Converting a QOI game sprite to ICO allows it to be used as a desktop shortcut or system tray icon.

Cross-project icon reuse

Icon designs created for one project in QOI can be repurposed for web or desktop use by converting to ICO. No re-drawing needed — just convert and deploy.

Who Uses This Conversion

Tailored guidance for different workflows

Designers

Convert QOI mockups to ICO for sharing with clients who need a universally compatible format
Transform QOI design assets to ICO for embedding in presentations or documents

Check the converted ICO at full zoom to verify no visible artifacts in gradients or fine details

Keep the original QOI as your master copy in case you need to re-export later

Web Developers

Convert QOI images to ICO for optimized loading on websites and web applications
Transform QOI assets to ICO for cross-browser compatibility in production builds

Test the converted ICO file in both Chrome and Safari to ensure consistent rendering

Consider the file size difference between QOI and ICO when optimizing page load speed

Photographers

Convert QOI photos to ICO for uploading to stock photography platforms or portfolios
Batch convert QOI images to ICO for delivering client galleries in a widely supported format

Use the highest quality setting when converting to ICO to preserve fine detail in your photos

Verify color accuracy after conversion, as QOI and ICO may handle color profiles differently

How to Convert QOI to ICO

1

Select your QOI file

Drag and drop your QOI file onto the converter, or click browse to choose from your files.
2

Instant conversion

The browser converts your QOI to ICO locally using the Canvas API. No upload needed and no data leaves your device.
3

Download the ICO

Save your converted ICO file. Ready to use as a favicon or Windows application icon.

Developers: convert via API →

Frequently Asked Questions

Why convert QOI to ICO?

ICO is the required format for website favicons (favicon.ico) and Windows application icons. QOI is not supported in web browsers as a favicon — converting to ICO makes your icon usable on the web and in Windows apps.

What ICO size is created?

The converter creates a 32x32 pixel ICO with a single embedded PNG frame. This is the standard favicon size and works in all modern browsers and Windows applications.

Does this upload my QOI file?

No. Conversion is entirely local in your browser using the Canvas API. Your file never leaves your device.

Does QOI transparency carry over to ICO?

Yes. ICO supports alpha transparency. If your QOI has an alpha channel (RGBA), the transparent areas will be preserved in the ICO output, giving you a proper transparent icon.

What is QOI format?

QOI (Quite OK Image) is a fast lossless image format from 2021. It stores 24-bit RGB or 32-bit RGBA pixel data using a simple algorithm optimized for encode/decode speed.

Can I use the ICO as a browser favicon?

Yes. Place the ICO file at the root of your website as favicon.ico and reference it in your HTML. All major browsers will display it as the tab and bookmark icon.

Does this work for 256x256 ICO files?

The converter resizes to 32x32 for the ICO output. If you need a 256x256 ICO (used in some high-DPI Windows contexts), consider converting to PNG first and then using a dedicated ICO tool.

Is there a file size limit?

No server limit — conversion is local. QOI files are typically small, well within browser memory limits.

What software opens ICO files?

All modern browsers display ICO as favicons. Windows Explorer, File Explorer, and applications that use Windows icons support ICO natively. GIMP and Photoshop can also open ICO files.

What browsers support this conversion?

Chrome, Firefox, Safari, and Edge all support the Canvas API used for this conversion. ChangeThisFile includes a JavaScript QOI decoder so QOI input works without native browser support.