RunConvert

SK Converter

Convert files to and from SK online for free. Fast, secure, and high-quality file conversion with no sign-up or software required.

Free to useNo file stored beyond 1 hourEncrypted over TLS 1.2/1.3No watermarks

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How it works

Three steps to your converted file

Everything happens in your browser tab - upload, pick a format, download. The heavy lifting runs on our servers.

01

Upload your file

Drag and drop, click to browse, or paste a URL. Batches take up to 20 files at once - 230+ input formats across video, audio, image, document, and archive types.

02

Choose an output format

Pick from over a hundred output formats. Filter by category or search by name - every option is open to everyone, no account needed.

03

Convert & download

Hit Convert and grab your download link moments later. Originals are erased when the job completes; results are cleared within about an hour.

What is an SK file?

The SK file extension is primarily associated with vector drawings created by Skencil (formerly known as Sketch), an interactive vector drawing application for Linux and Unix-like systems. The format relies on the Python programming language for its object definitions, allowing for the storage of Bezier curves, rectangles, and ellipses. Historically, the format was notable for its integration with the LaTeX typesetting system and its use in the open-source graphics community prior to the dominance of SVG.

How to open an SK file

Opening SK files requires the legacy Skencil application running on a Linux-based environment. Modern support is scarce; however, the sK1 vector graphics editor (a fork of Skencil) maintains partial compatibility. Users attempting to access SK files on Windows or macOS generally require file conversion utilities to transcode the Python-based vector objects into standard formats such as PDF, EPS, or SVG.

SK Technical Info

Full Name
Skencil Drawing File
Developed By
Bernhard Herzog
Initial Release
1998
MIME Type
application/x-skencil

Why RunConvert

The fastest way to convert any file

Purpose-built for speed, privacy, and breadth of format support.

3,000+ conversions supported

Every popular and niche format covered - video, audio, image, document, archive and more. New formats added regularly.

Fast, cloud-powered

No queue, no waiting. Files are processed on high-performance servers and returned in seconds, even for large files.

Secure & private

Encrypted in transit and never shared with anyone. Uploads are erased the moment your job completes, and results shortly after.

Free - no account needed

Convert without creating an account - no credit card, no trial clock. Sign in only if you want history and higher daily limits.