What is ICO format and why convert GIF to ICO?

ICO (Icon) is the file format used by Windows for application icons and browser favicons. It stores one or more images at different sizes in a single file. Converting a GIF to ICO lets you use a GIF image as a desktop icon, taskbar icon, or website favicon compatible with all major browsers and Windows applications.

Can I crop the GIF image before converting to ICO?

Yes — the tool provides an interactive crop overlay on the source image. Drag the corner and edge handles to define exactly which portion of the GIF you want in the output ICO. Click Preview Crop to see the result before downloading.

Does my image get uploaded to a server?

No. All processing — loading, cropping, and ICO encoding — happens entirely in your browser using JavaScript and the HTML5 Canvas API. Your image never leaves your device.

What sizes does the output ICO file contain?

The output ICO embeds your cropped image as a PNG at the exact pixel dimensions of your crop selection. Modern ICO files support embedded PNG data, compatible with Windows Vista and later, as well as all major browsers for favicon use. For best favicon results, crop to a square aspect ratio.

What happens with animated GIFs?

The tool renders the first (visible) frame of the GIF and converts that frame to ICO. Only the first frame is captured — the output ICO is a static icon image.

How do I reset and convert a different image?

Click the Start Over button that appears after loading an image. This clears the current file and resets the crop area so you can load a new GIF.

GIF to ICO Crop Converter

Load a GIF, drag the crop handles to define exactly the area you need, preview the result, then download an ICO icon file. Everything runs in your browser — your image never leaves your device.

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Drop a GIF here

or Browse Files · GIF supported

What This Tool Does

This tool loads a GIF image directly in your browser using URL.createObjectURL and img.decode() for reliable, guaranteed non-blank rendering. It presents an interactive crop overlay with draggable handles, and converts the selected area to an ICO icon file. No server upload is required. The full workflow — loading, cropping, encoding — runs entirely in client-side JavaScript using the HTML5 Canvas API. The output is an ICO file with an embedded PNG image, compatible with Windows Vista and later, all major browsers for favicon use, and any icon-aware application.

Who This Is For

Web developers who need to extract a specific region from a GIF and save it as a favicon or browser icon
Designers preparing Windows application icons from GIF source artwork
Anyone who needs to crop a GIF image and produce a valid ICO file without installing Photoshop or GIMP
Users converting legacy GIF graphics into modern favicon format for websites and apps

GIF vs ICO: Format Comparison

Property	GIF	ICO
Primary use	Animated web graphics, simple images	Application icons, favicons, taskbar icons
Color depth	8-bit (256 colors maximum)	Up to 32-bit RGBA (PNG-embedded)
Transparency support	1-bit (on/off only)	Full alpha channel (PNG-embedded ICO)
Multiple sizes	No	Yes — can embed multiple resolutions
Browser favicon support	Limited — not recommended	Universal — all major browsers
Windows icon support	No	Yes — native Windows format
Animation support	Yes	No (static frames only)
Best for	Simple animations, legacy web	Favicons, app icons, Windows desktop icons

Frequently Asked Questions

What is ICO format and how is it used?▼

ICO (Icon) is the native icon format for Windows and one of the most widely supported favicon formats on the web. It can contain multiple images at different sizes — for example 16×16, 32×32, and 256×256 — all inside a single file. Modern ICO files can embed PNG data, providing full RGBA color and transparency at any supported size.

How precise is the crop tool?▼

The crop operates at native pixel accuracy on the original GIF dimensions. The canvas is scaled to fit your screen for display, but the actual crop coordinates are mapped back to the full-resolution image before the ICO is generated. You get an ICO at the exact pixel dimensions shown in the crop dimensions badge.

Can I move the crop selection after setting it?▼

Yes — click and drag anywhere inside the crop rectangle (away from the handles) to reposition it anywhere within the image. Handles resize; the interior pans.

Should I crop to a square for favicon use?▼

Yes — browsers and operating systems display favicons and app icons as squares. Cropping to a square aspect ratio before converting to ICO ensures the icon looks correct without distortion or letterboxing. Common favicon sizes are 16×16, 32×32, 48×48, and 256×256 pixels.

What browsers are supported?▼

All modern browsers — Chrome, Firefox, Edge, Safari (desktop and mobile). The tool uses standard HTML5 Canvas and Blob APIs that have been universally supported since 2015.

Is there a file size limit?▼

There is no server-imposed limit because no upload occurs. The practical limit is your browser's available RAM. Most modern desktops handle GIF files comfortably. Very large files on memory-constrained mobile devices may be slower to process.

GIF to ICO Crop Converter

What This Tool Does

Who This Is For

GIF vs ICO: Format Comparison

Frequently Asked Questions

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