File Extension IRS

  • Full name
    Adobe Photoshop Optimized Setting Format
  • Developer
    Adobe Systems
  • Popularity
Have you encountered a problem with a IRS file? Don’t you know which program opens a file with this extension? You will find all the information you need about working with a IRS file here. In the further part of this page we have added a list of programs that should open your IRS file. It is enough you choose a proper application for your operating system, download and install it.

What is IRS file?

The file extension IRS marks preference files for the 'Save to Web' feature of Photoshop's image-editing software and Illustrator's vector-drawing software Adobe. In an IRS file the image format, for example JPEG or PNG-8, the quality settings as well as size and further optimization settings are stored.

More info

You can reach the function via 'File -> save for web'. If you click on the default arrow and select 'Change output settings' you can load and save IRS files. In this way, you can easily apply a fixed optimization to all images on a web page.

Under 'Preferences / Optimized Settings' you will find various pre-installed settings files. A less commonly used extension for these settings files is iros.

Programs which can open a IRS file

How to open file with IRS extension?

In order to open a file with IRS extension one of the following programs must be installed on user’s system. If a problem with opening IRS file occurred, it is highly possible that none of the listed programs is present on user’s system. Even if one or more said programs are installed, there may be issues related with given programs. In order to solve a problem with IRS files, follow the instructions below.
Install Adobe Photoshop or other program from the list

Most often resolving problems with opening IRS files is very simple. Just install an appropriate program that supports such files. All of the listed programs support IRS files, but may vary in offered function and purpose. Some programs may be capable only of viewing contents of IRS files or offer file conversion options, but may not be capable of editing such files.

Set Adobe Photoshop as the default program for opening IRS files

It is possible that although a compatible program has been installed on user’s system, it is not used by the system to open it. This may happen because no default application was associated with this type of files. To associate IRS files with given application, select "Open with" from drop-down menu (accessed by right-clicking on the file). Then select from the list the program or application you want to be used to open this type of file. If the Adobe Photoshop applications is not on the list, select "Browse" option in order to manually locate the directory where Adobe Photoshop has been installed.


Check the section that lists most common problems with IRS files

Sometimes problems with opening IRS files may not lie with the application itself, but can arise due to other causes, such as:

  • File data is corrupted
  • IRS files has been not been completely download from the internet (only a part of the data has been downloaded)
  • Currently used user account hasn’t been granted necessary privileges to open IRS files (should that be the case, please contact your system administrator or IT specialist)
  • IRS file was being copied from a corrupted storage device and is incomplete or data is corrupted. (Copying files from unknown or untrusted sources should be conducted with great care as such files may contain malicious software, which can damage your system)

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