Convert HEIC to SK Online — Free & Fast | AnyConv

HEIC to SK Converter

Quickly convert multiple heic files to sk — free & online.

Drag & drop your files here or click to upload

How to convert HEIC to SK online

Follow these simple steps to convert heic files to sk using AnyConv. It works on all devices — Windows, Mac, Linux, iPhone, Android.

Upload your HEIC file

Drag & drop your file into the upload area. You can also click to select it manually. Max file size: 100 MB.

Start converting

Hit the “Convert” button to turn your HEIC into SK. The process usually takes just a few seconds.

Download your SK

Once ready, download your converted file instantly. The download link is private and only works on your device.

What is a HEIC file?

HEIC stands for High Efficiency Image Container. It’s a modern image file format developed by Apple in 2017 as part of the HEIF (High Efficiency Image Format) standard. HEIC uses advanced compression to store high-quality images in smaller file sizes compared to older formats like JPG. This format became widely known with the release of iOS 11 and macOS High Sierra.

HEIC supports a range of features, such as 16-bit color depth, transparency, and even storing image sequences or bursts — making it ideal for Live Photos on Apple devices. It's efficient, but not yet universally supported.

How to open HEIC files

HEIC files are natively supported on Apple devices (iPhone, iPad, Mac). Windows 10 and 11 can also open them with additional codecs available via the Microsoft Store. For Linux or unsupported apps, third-party tools and online converters like AnyConv can help.

For broader compatibility, many users convert HEIC images to JPG or PNG when sharing with others or uploading online.

Key facts about HEIC

  • Full name: High Efficiency Image
  • Extension: .heic
  • MIME type: image/heic
  • Developed by: Apple Inc.
  • Initial release: 2017

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 HEIC

Need to change your HEIC files to a different format? Below are all the available tools to help you turn HEIC into the format you need.

Convert to SK

Want to get a file in SK format? Choose the original format you’re starting with — AnyConv can quickly convert dozens of file types into SK.

❓ Frequently Asked Questions

Answers to common questions about converting HEIC to SK
  • Do I need to register to convert HEIC files?
    Not at all! You can convert HEIC to SK without signing up or installing anything.
  • Is it safe to convert HEIC to SK on AnyConv?
    Absolutely. All HEIC and SK files are securely handled and automatically deleted after 1 hour. Nobody can access your data.
  • Will the quality change after converting HEIC to SK?
    We do our best to preserve the original quality during HEIC to SK conversion. The result is accurate and clean.
  • How long does it take to convert HEIC to SK?
    Most conversions from HEIC to SK take just a few seconds — even for larger files.
  • Can I upload more than one HEIC file?
    Yes, batch conversion is supported. You can convert multiple HEIC files to SK at once — fast and easy.
  • What browsers support HEIC to SK conversion?
    All modern browsers! Chrome, Firefox, Safari, Edge — AnyConv runs online and supports converting HEIC to SK on any platform.