ICO to WebP Crop Converter
Load an ICO file, drag the crop handles to define exactly the area you need, preview the result, then download a compact WebP. Everything runs in your browser — your image never leaves your device.
Drop an ICO here
or Browse Files · ICO supported
What This Tool Does
This tool loads an ICO image directly in your browser, presents an interactive crop overlay with draggable handles, and converts the selected area to a WebP file. No server upload is required. The full workflow — loading, cropping, and WebP encoding — runs entirely in client-side JavaScript using the HTML5 Canvas API. ICO files are decoded by drawing them to an offscreen canvas, ensuring complete pixel data is available before the crop overlay is drawn. The output uses the browser's native canvas.toBlob('image/webp') API at 90% quality, preserving full alpha channel transparency and delivering substantially smaller file sizes than equivalent PNG output.
Who This Is For
- Web developers who need a cropped ICO region as a compact WebP for use in modern web pages
- Performance-focused designers converting icon assets to WebP to reduce page weight
- Anyone who needs to extract and convert a portion of an ICO to WebP without installing dedicated software
- Content creators who want a quick, privacy-respecting crop-and-convert tool that needs no account or upload
ICO vs WebP: Format Comparison
| Property | ICO | WebP |
|---|---|---|
| Compression | Lossless (PNG) or uncompressed (BMP) | Lossy or lossless (VP8/VP8L-based) |
| Color depth | Up to 32-bit (RGBA) | 24-bit color + 8-bit alpha |
| File size | Small for icon sizes | 25–35% smaller than PNG at equivalent quality |
| Animation support | None | Supported (WebP animation) |
| Transparency support | Full alpha channel | Full alpha channel |
| Web support | Limited (favicon use only) | All modern browsers (Chrome, Firefox, Safari 14+, Edge) |
| Best for | Windows icons and favicons | Web images, UI elements, performance-critical assets |
Frequently Asked Questions
WebP is a modern image format from Google that delivers superior compression compared to PNG and JPEG while supporting full transparency. Converting a cropped ICO region to WebP produces a compact, high-quality file ideal for modern web pages and performance-critical assets.
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 ICO you want in the output WebP. Click Preview Crop to see the result before downloading.
No. All processing — loading, cropping, and WebP encoding — happens entirely in your browser using JavaScript and the HTML5 Canvas API. Your image never leaves your device.
Yes — WebP supports full alpha channel transparency. Any transparent areas in your ICO will be preserved exactly in the WebP output, making it an excellent choice when you need both small file size and transparency.
WebP is supported in all modern browsers including Chrome, Firefox, Safari (14+), and Edge. WebP encoding via the Canvas API is available in all major modern browsers.
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 ICO.