PICON to SK Converter

Transform PICON bitmaps into SK vector graphics easily

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Browser-Based Tool

No software to download — convert PICON to SK entirely in your web browser. Works on any device with an internet connection.

Cross-Platform Access

Whether you are on a desktop, tablet, or phone — convert PICON to SK from any device with a modern web browser.

Cloud Conversion

All PICON to SK processing runs on Convertio servers — your device stays fast and free while the conversion happens in the cloud.

How to convert PICON to SK

1

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

2

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

3

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

About formats

PICON (Personal Icon) is a small-format image type used in the X Window System ecosystem, developed by Steve Kinzler at Indiana University around 1990 as part of the picons (personal icons) database project. Picons are small, typically 48x48 pixel, color images used as visual identifiers for people, organizations, domains, and Usenet newsgroups in Unix mail readers, news readers, and other communication tools. The picon format is essentially an XPM (X PixMap) image stored with specific naming conventions and directory structures that allow software to look up the appropriate icon based on email address, domain name, or newsgroup name. The picons database organized thousands of these small images in a hierarchical directory structure keyed by domain name components (e.g., faces/com/example/user.xpm), enabling mail clients like exmstrstrstr and faces to automatically display a sender's photo or organizational logo alongside their messages. The system predated the modern concept of contact photos and avatars by more than a decade. One advantage is the system's pioneering role in visual identity for electronic communication: picons introduced the idea that email and Usenet messages should display a visual representation of the sender — a concept that eventually became standard in every modern email client, messaging app, and social media platform. The XPM-based format ensures that picons are displayable on any system with X Window libraries. Picon images are supported by ImageMagick, GIMP, and X Window display utilities, and the historical picons database remains archived online at Indiana University.
Developer: Steve Kinzler
Initial release: 1990
SK is the native file format of Skencil (originally named Sketch), a free vector graphics editor for Linux created by Bernhard Herzog, with the first public release on October 31, 1998. Skencil holds historical significance as one of the earliest full-featured vector drawing applications written almost entirely in Python, with only performance-critical rendering components implemented in C. The SK file format uses a text-based, Python-like syntax to describe document structure — pages, layers, groups, and individual graphic objects are represented as nested statements with parameters specifying coordinates, colors, line styles, and transformations. The format supports Bezier curves, rectangles, ellipses, text objects with font specifications, imported raster images, gradient and pattern fills, and hierarchical grouping with affine transforms. One advantage is human readability — SK files can be opened in any text editor, making it possible to inspect, modify, or generate artwork programmatically using simple scripts. The Python-native structure also provides a benefit for automation: since Skencil itself is a Python application, the file format integrates naturally with scripting workflows for batch processing and procedural graphic generation. While Skencil's development slowed after the mid-2000s, its SK format became the foundation for the sK1) project, which extended the format and continued active open-source vector graphics development. SK files remain convertible through sK1, UniConvertor, and other open-source tools.
Developer: Bernhard Herzog
Initial release: October 31, 1998

Frequently Asked Questions

Why convert PICON to SK?

SK provides Sketch/Skencil vector drawing format, which PICON cannot offer. This conversion lets you move from fixed-resolution bitmaps to flexible vector artwork.

Which software can view SK files?

SK files can be opened with Skencil, Inkscape (with import), UniConvertor. Most of these are available across Windows, macOS, and Linux.

How long does PICON to SK conversion take?

Usually just seconds. PICON files are typically small, so the upload, conversion, and download process finishes very quickly on Convertio.

Is PICON to SK conversion free?

Yes — Convertio offers free PICON to SK conversion. Premium options exist for users who need more capacity or faster processing speeds.

What exactly is the PICON format?

PICON (small thumbnail/icon format from Unix systems) originated in Unix file managers. It has very limited modern application support but can be converted to modern formats on Convertio.

Can I convert multiple PICON files to SK at once?

Yes — upload several PICON files in one session and Convertio processes them all into SK simultaneously, saving you time.