SGN File Documentation
Summary
An SGN (Print Artist Sign/Project) file is a project saved by Print Artist, the craft and print suite originally from Sierra and now published by Nova Development. It holds a printable design such as a sign, greeting card or calendar, and its MIME type is application/octet-stream. The format is proprietary, so essentially only Print Artist opens a .sgn file. Print Artist is still sold and updated (currently version 25), so a recent copy can open and re-export these projects.
Technical details
| Feature | Value |
|---|---|
| Full name | Print Artist Sign / Project File |
| File extension | .sgn |
| MIME type | application/octet-stream |
| Format type | Proprietary craft-project document (signs, cards, calendars) |
| Developer | Sierra (original); Nova Development (current) |
| Introduced | 1990s (Sierra Print Artist) |
| Open standard | No — proprietary, undocumented |
| Magic number | No published signature |
| Status | Actively sold — Print Artist 25 (Nova Development) |
| Opens in | Print Artist (Windows) |
| Export via | Print Artist’s own Print-to-PDF / Save-As |
| Third-party viewers | None reliable |
| Other common meaning | Digital-signature / saved-signature file |
| Related extensions | .pa, .paf, .cnv, .cal |
| Developer site | novadevelopment.com |
What is an SGN file?
An .sgn file is a project document from Print Artist, a consumer desktop-publishing and craft program first released by Sierra as Sierra Print Artist in the 1990s. The program is used to design and print signs, greeting cards, stationery, calendars and similar artwork, and an .sgn file stores one such project. It is a proprietary format with no published specification, so this page does not describe a byte layout for it; the file is passive data, not a program.
Unlike many legacy craft formats, Print Artist is not abandoned. Sierra no longer develops it, but the product is now owned, sold and maintained by Nova Development, with the current release being Print Artist 25. That is the important, and unusually positive, fact for anyone holding old .sgn files: a current, purchasable program still opens them, and installing it restores the file association so .sgn files open on a double-click.
What a Print Artist project holds
An .sgn is a single project that bundles several data types together: the page layout with its positioned elements, text objects with their fonts and styles, embedded or referenced graphics and clip art, and the print settings that record the project type (sign, card, calendar) and how it should be printed.
| Contains | What it is |
|---|---|
| Project layout | The page or canvas with positioned design elements |
| Text objects | Headlines and body text with fonts and styles |
| Graphics / clip art | Embedded or referenced images and artwork |
| Print settings | Project type and print options |
Because the layout, text and images all live inside one proprietary project, there is no partial way to read the design from outside the program. The original software could export individual elements to standard formats, but the .sgn project as a whole is Print Artist’s own.
Opening an SGN and getting the design out
To open an .sgn, install Print Artist (current version 25 from Nova Development) and use File › Open. From there you can edit and reprint the project, and you get a portable copy of the design through the program’s own export features rather than any third-party converter. For a PDF, open the project and Print to a PDF printer, or use its export. For an image, use Print Artist’s Export or Save-As to write a JPG or a PNG (choose PNG when you need transparency or lossless output). There is no standalone .sgn-to-PDF or .sgn-to-image tool, because reading the proprietary project requires the program that wrote it; conversion has to happen from inside Print Artist.
The other .sgn: signature and signed-data files
The .sgn extension is reused by unrelated programs. Some applications write a .sgn for a detached digital signature or a saved handwritten or email signature; a few other consumer card and craft suites also output a .sgn project similar in spirit to Print Artist’s. These open only in the application that created them, and a signature file in particular should not be “opened” as a document. Confirm the file came from Print Artist, by its origin, before installing anything to view it.
Getting Print Artist from the right place
Print Artist projects are passive documents and low-risk. The real caution is sourcing the software: searches for “open .sgn file” lead to many generic “universal file viewer” sites and bundled installers that carry adware and cannot actually read the proprietary project. Get Print Artist only from Nova Development. If your .sgn turns out to be a digital-signature file rather than a craft project, do not try to open it as a document at all; handle it in whatever security or messaging app produced it.
References
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