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.IRS File Extension

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File TypeAdobe Save For Web Settings

DeveloperAdobe Systems
3.5 (2 Votes) Thanks for voting!
Rare Uncommon Average Common Very Common
CategorySettings Files


This file is saved in a binary format, which requires a specific program to read its contents.


Settings file created by Adobe Photoshop and Illustrator; contains settings for the "Save for Web" dialog; stores the image format (GIF, JPEG, PNG-8, PNG-24, or WBMP), quality, size, and other optimization options; enables Web designers to save multiple images that have the same formatting and quality specifications.

More Information

You can open the Save for Web dialog in Photoshop CS5 by selecting File → Save for Web & Devices.... Photoshop includes several preinstalled IRS files in the /Presets/Optimized Settings/ directory.

Programs that open IRS files
Adobe Photoshop CC 2015
Adobe Illustrator CC 2015
Adobe Photoshop CC 2015
Adobe Illustrator CC 2015
Updated 2/14/2014