Quick Solutions for You
๐Ÿ–ผ๏ธ Multi-Size Pack ยท One-Click Generate

Online ICO Icon Generator

Upload any image to create ICO icons with sizes from 16x16 to 256x256
100% browser-based processing, no server uploads, essential for website favicon

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Click to upload or drag & drop image here
Supports PNG / JPG / BMP / GIF / WebP / SVG ยท Or Ctrl+V to paste screenshot

๐Ÿ’ก When Do You Need ICO Icons?

ICO icons are essential for websites and applications

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Website Favicon

The small icon shown in browser tabs that helps users identify your site at a glance. Sites without favicons look unprofessional.

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Desktop App Icons

Windows applications require ICO format icons, supporting sizes from 16x16 to 256x256 for different display contexts.

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Bookmarks & Shortcuts

When users bookmark your page or create desktop shortcuts, the system uses ICO icons for display. Missing sizes result in default icons.

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SEO Optimization

Search engines and social media show site icons in results. A clear favicon improves click-through rates and brand recognition.

๐Ÿ“– How to Generate ICO Icons

3 simple steps, no software installation needed

1

Upload Image

Click, drag & drop, or Ctrl+V to paste. Supports PNG/JPG/BMP/WebP/SVG

2

Select Sizes

Choose the sizes you need. Favicon preset (16+32+48) recommended

3

Generate & Download

One-click ICO generation with HTML code snippet included

โ“ Frequently Asked Questions

Upload your PNG image, select the sizes you need (16x16 and 32x32 recommended), then click 'Generate ICO' to download the favicon.ico file. Everything runs in your browser โ€” your image is never uploaded to a server.
At minimum, include 16x16 and 32x32. A complete set would be 16, 32, and 48, which covers browser tabs, Windows taskbar, and bookmarks. Add 64 and 128 for high-DPI displays.
ICO is a Windows icon format that can contain multiple image sizes in one file. Browsers look for favicon.ico specifically. PNG is a single image format โ€” modern browsers support PNG favicons, but ICO ensures maximum compatibility.
Place favicon.ico in your website's root directory, then add <link rel="icon" href="/favicon.ico" type="image/x-icon"> inside your HTML <head> tag. The tool generates this code for you.
Yes, completely safe. Your image is processed entirely in your browser and never uploaded to any server. All data disappears when you close the page.
All browser-supported formats: PNG, JPG/JPEG, BMP, GIF, WebP, and SVG. PNG is recommended because it supports transparent backgrounds.
16 pixels is extremely small โ€” complex images lose detail when scaled down. Use a simple design like a logo with transparent background for best results at small sizes.
Yes. Select multiple sizes (16, 24, 32, 48, 64, 128, 256) and they'll all be packaged into a single ICO file. Browsers automatically pick the best size for each context.
The ICO format supports up to 256x256 pixels. This tool offers 7 sizes: 16, 24, 32, 48, 64, 128, and 256, covering all common use cases.
Yes, you can download each size as a separate PNG file, which is useful for PNG favicons or other contexts. Both ICO (multi-size bundle) and individual PNGs are available.

๐Ÿ“š ICO Icon Reference

  • ICO Format Spec: ICO files consist of an ICONDIR header and multiple ICONDIRENTRY structures, supporting PNG or BMP encoded image data
  • Browser Compatibility: All major browsers support favicon.ico; modern browsers also support PNG/SVG favicons
  • Recommended Size Combos: Website favicon: 16+32+48; Windows app: 16+24+32+48+64+128+256
  • Transparent Background: Use PNG format for upload (built-in alpha channel); JPG doesn't support transparency
  • Design Tips: Favicon display area is tiny โ€” keep icons simple and bold, avoid excessive detail and text