ICO to SK Converter
Drag & drop your files here or click to upload
How to convert ICO to SK online
Upload your ICO file
Start converting
Download your SK
What is a ICO file?
ICO is a file format used for icons in Microsoft Windows. It stores one or more small images in different sizes and color depths, allowing Windows to scale icons across different UI components.
ICO files are essential for desktop software and websites (as favicons), and they can include both bitmap and PNG-based images.
How to open ICO files
ICO files can be opened with Windows built-in image viewer, Paint, or advanced tools like IcoFX, GIMP, and Photoshop (with plugins). macOS may require conversion first.
If you need to convert ICO to PNG or JPG, AnyConv makes it simple to do so online in just a few clicks.
Key facts about ICO
- Full name: Icon File
- Extension: .ico
- MIME type: image/x-icon
- Developed by: Microsoft
- Initial release: 1981
Useful links and resources
What is a SK file?
SK is a proprietary 3D file format used by Autodesk SketchBook, mainly for storing layered sketches and illustrations. While it is technically 2D, it can include elements such as perspective grids and annotations that relate to 3D workflows.
SK files are typically used by digital artists and illustrators and can be opened only with SketchBook or compatible Autodesk software.
How to open SK files
SK files are used in Autodesk SketchBook to store sketches and layered illustrations. They can be opened only in SketchBook or compatible Autodesk products.
To share or edit SK content outside of SketchBook, export the drawing to PNG, JPG, or PSD format using SketchBook's export options or AnyConv.
Key facts about SK
- Full name: SketchBook Drawing File
- Extension: .sk
- MIME type: application/octet-stream
- Developed by: Autodesk
- Initial release: 2009
Useful links and resources
Convert from ICO
Convert to SK
❓ Frequently Asked Questions
- Do I need to register to convert ICO files?Not at all! You can convert ICO to SK without signing up or installing anything.
- Is it safe to convert ICO to SK on AnyConv?Absolutely. All ICO and SK files are securely handled and automatically deleted after 1 hour. Nobody can access your data.
- Will the quality change after converting ICO to SK?We do our best to preserve the original quality during ICO to SK conversion. The result is accurate and clean.
- How long does it take to convert ICO to SK?Most conversions from ICO to SK take just a few seconds — even for larger files.
- Can I upload more than one ICO file?Yes, batch conversion is supported. You can convert multiple ICO files to SK at once — fast and easy.
- What browsers support ICO to SK conversion?All modern browsers! Chrome, Firefox, Safari, Edge — AnyConv runs online and supports converting ICO to SK on any platform.