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Convert PNG to ICO

· Last updated：2025-10-10

Convert PNG images to ICO format for Windows icons and favicons

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Written by the Elysia Tools team
Image355
PNG63
Icon12
ICO8

Tool usage guide

Learn when to use this tool, what it supports, and how real users apply it.

Key facts

Category
Media
Input types
file, number
Output type
file
Sample coverage
4
API ready
Yes

Overview

Easily convert your PNG images into ICO format with this efficient utility, perfect for creating custom Windows application icons and website favicons.

When to use

  • When you need to create a favicon for your website to display in browser tabs.
  • When you want to customize the desktop icon for a Windows application or shortcut.
  • When you need to convert high-quality PNG graphics into a multi-resolution icon format.

How it works

  1. 1Upload your source PNG image file using the file selector.
  2. 2Specify your desired icon size in pixels, ranging from 16 to 1024.
  3. 3Click the convert button to process the image and download your new ICO file.

Use cases

  • Generating professional favicons for web development projects.
  • Creating custom desktop icons for personal software shortcuts.
  • Preparing image assets for Windows software distribution.

Compare alternatives

  • Convert multiple image files between different formats like JPG, PNG, WebP, AVIF, TIFF, GIF with quality settings and batch processing

  • Convert AVIF images to PNG format with transparency support and high quality output

  • Convert multiple images to different formats with quality settings and batch processing

Who it's for

Best for

  • Convert images in the browser.
  • Repeatable jobs with images and the same settings every time.
  • Jobs where the output is a downloadable file.

Not ideal for

  • Fully automated batch jobs — this page is built for interactive use; use the API endpoint for scripts.
  • Files in formats this tool does not accept — it works with .png input.

Edge cases & common failures

  • Very large files

    Large files take longer and can hit browser memory limits — try a smaller sample first.

  • Skipping the output check

    Compare the first rows or pages of the output with the input before using it in production.

  • Files from unusual exporters

    Some files use format variants that do not convert cleanly — if the output looks wrong, re-save the file from the app that created it and try again.

Examples

1. Creating a Website Favicon

Web Developer

Background

A developer needs to add a branded favicon to a new website to improve user recognition in browser tabs.

Problem

The logo is currently a high-resolution PNG, but browsers require an ICO format for the favicon.

How to use

Upload the logo PNG and set the size to 32 pixels for a standard favicon.

size: 32

Outcome

A perfectly sized 32x32 ICO file ready to be implemented as a website favicon.

2. Customizing Desktop Application Icons

Software Enthusiast

Background

A user wants to replace the default icon of a desktop shortcut with a custom graphic.

Problem

Windows shortcuts require the ICO format, but the custom graphic is saved as a PNG.

How to use

Upload the custom graphic and use the default 256-pixel setting to ensure high quality.

size: 256

FAQ

What is an ICO file?

An ICO file is an image format used for icons in Microsoft Windows and as favicons for websites.

Can I convert multiple images at once?

This tool currently supports processing one PNG file at a time.

Is there a limit to the file size?

Yes, the maximum file size for the uploaded PNG is 10 MB.

What is the default icon size?

The tool defaults to 256 pixels if no specific size is provided.

Does the tool support transparency?

Yes, the conversion process preserves the transparency of your original PNG file.

Hub

SVG Favicon and Icon Conversion Workflow

Prepare favicon, app icon, and web icon assets from SVG, PNG, ICO, JPG, and WebP sources with conversion and optimization checks.

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