With the file extension IROS settings files for the function 'save for web' of the image editing software Photoshop and the vector drawing software Illustrator of Adobe are marked. In an IROS file the image format, for example JPEG or PNG-8, the quality settings as well as size and further optimization settings are saved.
The function can be reached via 'File -> Save for the Web'. If you click on the default arrow and select 'Change output settings' you can load and save IROS files. In this way, you can easily apply a fixed optimization to all images on a web page.
The file extension is rarely used, more common is irs. Under 'Preferences / Optimized Settings' you will find various pre-installed settings files. However, these usually have the ending irs.
Most often resolving problems with opening IROS files is very simple. Just install an appropriate program that supports such files. All of the listed programs support IROS files, but may vary in offered function and purpose. Some programs may be capable only of viewing contents of IROS files or offer file conversion options, but may not be capable of editing such 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 IROS 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.
Sometimes problems with opening IROS files may not lie with the application itself, but can arise due to other causes, such as: