Files with irs extension are used by Adobe Illustrator program. They store optimized settings of this software.
There are 2 other file types using
the IRS file extension!
.irs - Corel WordPerfect IRS resource file
.irs - Adobe Photoshop optimized setting file
Detailed description
Software that open irs file
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IRS file extension - Adobe Illustrator optimized setting file
What is irs file? How to open irs files?
The irs file extension is associated with Adobe Illustrator, a vector graphic software editing tool, developed by Adobe Systems Incorporated.
The irs files are used for saving optimized setting file for the application.
The default software associated to open irs file:
Adobe Illustrator 
Company or developer:
Adobe Systems Incorporated
Adobe Illustrator is a vector graphics editor and part of some editions of Adobe Creative Suite and Cloud. It is a direct competitor to programs like CorelDraw. Illustrator allows users to create sophisticated artwork for virtually any medium.
The latest version, Illustrator CC is available through the new Adobe Creative Cloud suite. The previous version was Illustrator CS6.
Adobe Illustrator for Mac 
Company or developer:
Adobe Systems Incorporated
Mac version of Adobe Illustrator, a vector graphics editor that is part of some editions of Adobe Creative Suite and Creative Cloud. The newest member of Illustrator family is the CC version available in Creative Cloud bundle.
Help how to open:
The irs files are not meant to be opened directly and are integral part of the Adobe Illustrator application.
How to convert:
As far as we know, this .irs file type can't be converted to any other file format. This is usually the case of system, configuration, temporary, or data files containing data exclusive to only one software and used for its own purposes. Also some proprietary or closed file formats cannot be converted to more common file types in order to protect the intellectual property of the developer, which is for example the case of some DRM-protected multimedia files.
List of software applications associated to the .irs file extension
Recommended software programs are sorted by OS platform (Windows, macOS, Linux, iOS, Android etc.)
and possible program actions that can be done with the file: like open irs file, edit irs file, convert irs file, view irs file, play irs file etc. (if exist software for corresponding action in File-Extensions.org's database).
Hint:
Click on the tab below to simply browse between the application actions, to quickly get a list of recommended software, which is able to perform the specified software action, such as opening, editing or converting irs files.
Software that import irs file - Adobe Illustrator optimized setting file
Programs supporting the exension irs on the main platforms Windows, Mac, Linux or mobile. Click on the link to get more information about listed programs for import irs file action.
Applications that export irs file - Adobe Illustrator optimized setting file
Programs supporting the exension irs on the main platforms Windows, Mac, Linux or mobile. Click on the link to get more information about listed programs for export irs file action.
Settings file type for software that use irs file - Adobe Illustrator optimized setting file
Programs supporting the exension irs on the main platforms Windows, Mac, Linux or mobile. Click on the link to get more information about listed programs for settings irs file action.
Unspecified and all other actions for computer programs working with irs file - Adobe Illustrator optimized setting file
Click on the software link(s) for more information. Suggested software applications use irs file type for internal purposes and/or also by different way than common edit or open irs file actions (eg. to install/execute/support an application itself, to store application or user data, configure program etc.).
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