What is ICO and why convert WebP to ICO?

ICO (Windows Icon) is the format used for application icons, favicons, and Windows desktop/taskbar icons. Browsers load favicon.ico from the root of a website. Converting a cropped WebP to ICO lets you produce a favicon or application icon from any region of a WebP image without needing Photoshop or dedicated icon editors.

Can I crop the WebP 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 WebP you want in the output ICO. The crop is especially useful for isolating a logo or symbol from a larger image before converting to icon format.

Does my image get uploaded to a server?

No. All processing — loading, cropping, and ICO file construction — happens entirely in your browser using JavaScript. Your image never leaves your device.

What size is the output ICO?

The tool generates a single-frame ICO file at the size you select: 16×16, 32×32, 48×48, 64×64, 128×128, or 256×256 pixels. The cropped region is resampled to fit the chosen size. For a favicon, 32×32 or 48×48 is recommended. For application icons, 256×256 gives the best result.

Does the ICO output preserve transparency?

Yes. The ICO file embeds a 32-bit PNG image which supports a full alpha channel. Transparent areas in your WebP source are preserved in the ICO output.

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 WebP.

WebP to ICO Crop Converter

Load a WebP, drag the crop handles to isolate the region you want, choose an icon size, then download a proper ICO file. Perfect for creating favicons and application icons from any WebP image. Everything runs in your browser — your image never leaves your device.

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Drop a WebP here

or Browse Files · WebP supported

What This Tool Does

This tool loads a WebP image directly in your browser, presents an interactive crop overlay with draggable handles, and converts the selected area to an ICO file. No server upload is required. The workflow runs entirely in client-side JavaScript. The cropped region is drawn to an offscreen canvas at the target icon size (16–256 px), exported as a PNG data URL, and then wrapped in a correctly structured ICO binary: a 6-byte ICONDIR header, a 16-byte ICONDIRENTRY, and the PNG image data. The resulting file is a valid single-frame 32-bit ICO recognised by Windows, macOS, Linux desktops, and all major browsers as a favicon. Transparency is fully preserved because the embedded format is 32-bit PNG.

Who This Is For

Web developers creating a favicon.ico from a WebP logo or brand mark
Designers producing Windows application icons from existing WebP artwork
Anyone who needs a quick ICO from a specific cropped region of a WebP image
Site owners who want to update their favicon without installing icon software

ICO Format & Size Guide

Size	Common Use	Notes
16 × 16	Browser tab favicon (small)	Minimum favicon size; keep design very simple
32 × 32	Standard favicon, Windows taskbar (small)	Most widely used single favicon size
48 × 48	Windows taskbar, desktop shortcut	Recommended for Windows desktop icons
64 × 64	High-DPI favicon, large UI elements	Good for retina display compatibility
128 × 128	macOS Dock, high-resolution icons	Used by macOS and high-DPI desktop environments
256 × 256	Windows Vista+ large icon view	Maximum ICO size; best for Windows Explorer thumbnails

Frequently Asked Questions

What size should I choose for a favicon?▼

32×32 is the most widely supported single-size favicon. Browsers scale it down to 16×16 when needed. If you want to include both sizes in one file, multi-frame ICO creation is outside the scope of this tool — use a dedicated favicon generator for multi-size ICOs. For a simple single-size favicon, 32×32 is the best choice.

Will transparent areas in my WebP be preserved in the ICO?▼

Yes. The ICO file uses a 32-bit PNG-in-ICO format, which supports a full alpha channel. Transparent pixels in your WebP source are preserved in the ICO output. Modern Windows versions (Vista+) and all major browsers support 32-bit ICO with transparency.

How is the image resampled to the icon size?▼

The cropped region is drawn to an offscreen canvas at the target icon size using the browser's built-in bilinear scaling. For small sizes like 16×16, consider cropping tightly around a simple symbol or letter to keep the icon readable at small sizes.

How precise is the crop tool?▼

The crop operates at native pixel accuracy on the original WebP dimensions. The canvas is scaled to fit your screen for display, but crop coordinates are mapped back to the full-resolution image before the ICO is generated.

Can I move the crop selection after setting it?▼

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

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. WebP files are natively decoded by all modern browsers. Most modern desktops handle WebP files up to 50 MP comfortably.

WebP to ICO Crop Converter

What This Tool Does

Who This Is For

ICO Format & Size Guide

Frequently Asked Questions

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