JPG to ICO Converter

Convert JPG, PNG, or any image to ICO favicon format. Choose your icon sizes, generate multi-size ICO files instantly — 100% private, processed in your browser.

Drag & Drop images here

or click to browse — JPG, PNG, WEBP, GIF supported

ICO Sizes to include

16×16 32×32 48×48 64×64 128×128 256×256

Standard favicon sizes. Select at least one. Multi-size ICO files work on all browsers and OS platforms.

What is an ICO file?

ICO is the standard format for icons on Windows and for website favicons. An ICO file can contain multiple images at different resolutions in a single file — the operating system or browser picks the most appropriate size automatically.

A well-formed ICO for a website favicon typically includes at least 16×16 and 32×32 pixels. For Windows application icons, 48×48 and 256×256 are also standard. This tool lets you pick exactly which sizes to include so your ICO works everywhere it needs to.

Multi-size in one file

One ICO file holds all your icon sizes. Browsers and operating systems automatically pick the right resolution for each context — toolbar, taskbar, tab, or bookmark.

100% Private

All conversion happens in your browser using the HTML5 Canvas API. Your images are never uploaded to any server. The tool works completely offline once the page loads.

Universal support

ICO files are supported by every major browser (Chrome, Firefox, Safari, Edge) and all versions of Windows dating back to the 1990s. It is the safest favicon format available.

How to use your ICO as a favicon

After downloading your .ico file, place it in the root of your website and add this tag inside your HTML <head>:

Most browsers will also automatically pick up a file named favicon.ico placed in the root without any HTML tag at all.

Frequently Asked Questions

No. Everything runs in your browser using the HTML5 Canvas API. Your images never leave your device. You can verify this by switching to airplane mode — the tool continues to work.

JPG, JPEG, PNG, WEBP, GIF, BMP, and SVG are all supported. The browser decodes the image before conversion, so any format your browser can display will work.

For a basic favicon, 16×16 and 32×32 are sufficient. Adding 48×48 improves display on HiDPI screens. Including 256×256 is useful if you also want the file to work as a Windows application icon.

Yes, if your source image has a transparent background (PNG or WEBP with alpha channel), the transparency is preserved in the ICO output. The ICO format supports 32-bit images with full alpha transparency.

Yes. You can drag and drop multiple images at once. Each image generates its own ICO file with the sizes you selected.

ICO files store uncompressed pixel data for each size included. A JPG uses lossy compression which produces much smaller files. A multi-size ICO with 6 resolutions will be significantly larger, which is expected and normal.

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