ICO to CUR Converter

Seamless ICO to CUR conversion online — always free

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Expand Usability

ICO is limited to icons and favicons — converting to CUR gives you a standard format that works in image editors, documents, and beyond.

Bulk Conversion

Need to convert dozens of ICO files? Upload them all and batch-convert to CUR — much faster than processing one at a time.

Any Device, Any OS

Run ICO to CUR conversion on desktop, laptop, tablet, or smartphone. Works on every operating system with a modern web browser.

How to convert ICO to CUR

1

Select files from Computer, Google Drive, Dropbox, URL or by dragging it on the page.

2

Choose cur or any other format you need as a result (more than 200 formats supported)

3

Let the file convert and you can download your cur file right afterwards

About formats

ICO is the icon file format for Microsoft Windows), introduced with Windows 1.0 in 1985 and serving as the standard container for application icons, file type icons, and shortcut icons throughout the Windows ecosystem. An ICO file bundles multiple image variants within a single container — each at different sizes (16x16, 32x32, 48x48, 256x256, and others) and color depths (4-bit, 8-bit, 24-bit, 32-bit with alpha) — allowing Windows to select the most appropriate image for each display context, from tiny taskbar buttons to large desktop icons. The container structure consists of an ICONDIR header, an array of ICONDIRENTRY records describing each variant, and the image data itself. Since Windows Vista, ICO files support embedded PNG-compressed images for the larger sizes (typically 256x256), dramatically reducing file size while maintaining quality with full alpha transparency. One advantage is automatic size adaptation — Windows pulls the optimal resolution from the ICO container for each context (Explorer list view, desktop tile, Alt-Tab preview), ensuring crisp display without the application managing separate image files. The format's operating system-level integration is another core strength: ICO files serve as the identity mechanism for executables, file associations, and shortcuts across all Windows versions, and web browsers use favicon.ico for website identity in tabs and bookmarks. ICO creation and editing is supported by image editors like GIMP, Inkscape, and dedicated icon tools, and the format remains essential for Windows application development.
Developer: Microsoft
Initial release: 1985
CUR is the cursor image format for Microsoft Windows), structurally nearly identical to the ICO (icon) format but with the addition of a hotspot coordinate that identifies the precise pixel position where mouse clicks register. Introduced with early Windows versions, CUR files use the same container structure as ICO: a directory header listing one or more image entries, each specifying dimensions and color depth, followed by the pixel data for each variant. Like ICO, a single CUR file can contain multiple images at different sizes and color depths, allowing Windows to select the most appropriate cursor image for the current display resolution and color settings. Image data within CUR files can be stored as BMP pixel arrays (for legacy compatibility) or as embedded PNG images (supported since Windows Vista) for alpha-blended cursors with smooth edges. The hotspot coordinate — the distinguishing feature separating CUR from ICO — is stored as an X,Y pair in the directory entry header, typically pointing to the tip of an arrow or the center of a crosshair. One advantage is multi-resolution packaging: a single CUR file provides appropriate cursor imagery across display densities from standard DPI to high-DPI screens. Native Windows integration is another strength — CUR files are loaded directly by the operating system for mouse cursor) display without any third-party software. CUR files are used by application developers and theme creators to customize the pointing experience across Windows environments.
Developer: Microsoft
Initial release: 1987

Frequently Asked Questions

Why convert ICO to CUR?

CUR turns your icon into a Windows mouse cursor with a defined hotspot — needed when building custom cursor themes or UI pointer sets for Windows.

Which apps support CUR files?

You can open CUR files with Windows cursor editor, RealWorld Cursor Editor, GIMP. Free alternatives are available for every platform.

Does this work on mobile devices?

Yes — the ICO to CUR converter works in any mobile browser on iOS and Android. No app installation is needed — just open convertio.tools and upload your file.

What happens to my uploaded files?

Your ICO files are automatically deleted right after conversion. The resulting CUR files remain available for download for 24 hours, then they are permanently removed.

Is ICO to CUR conversion free?

Basic conversions are free on Convertio. Premium plans offer faster processing, larger file sizes, and higher daily conversion limits for heavier workloads.

How long does ICO to CUR conversion take?

Most conversions complete within seconds. Processing time depends on file size and server load, but the entire workflow typically finishes in under a minute.

ICO to CUR Quality Rating

4.6 (631 votes)
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