Sirds lets you create Single Image Random Dot Stereogram (SIRDS) and Single Image Stereogram (SIS) images.

• Generate a "wall-eyed" (divergent) or "cross-eyed" (convergent) stereogram
• Customizable dimensions (resolution, observer distance, maximum depth, and eye separation)
• Hidden-surface removal
• Center to both sides method to minimize the distortion
• Oversampling to give smooth depth levels
• Stereogram viewing guide marks
• Random Dot pattern generator
• Supported depth map and pattern image file types: PNG, TIFF, JPEG, BMP, GIF, PICT, etc.
• AppleScript scripting support
• Grand Central Dispatch support in order to generate stereograms faster

SIRDS or SIS is an autostereogram which does not require any equipment to view a three-dimensional scene.

* Stereogram algorithm licensed from W.A. Steer. Visit for technical details.

Visit our forum page for more samples.


• Choose the "New" menu item from the "File" menu or press command - N to create a new Sirds document.
• Drop a depth map image onto a Sirds document window, or choose one of the sample depth maps from the "Import" menu item from the "File" menu.
• Change the random dot color and shape, or import a pattern (or tile) image.
• Check the "Show Guide" option or press command - G to show the stereo view guide if you have trouble figuring out how deep you need to look.

What’s New

Version 2.2.1

Minor bug fixes.

Ratings and Reviews

5.0 out of 5
1 Rating

1 Rating

DrBionic ,

Unique App

A very cool app that works as promised. Developer is very responsive.

dfcurran ,

Works perfectly I am very happy with this

I looked at this program and a higher priced competitor (Which I tried a sample of) and found this to be the best value. The program is easy to use, Works very quickly. You can use their random patterns or import photos. There are a wide number of pattern choices from greyscale to full color (Grayscale works better with some images.) And the distance setting are great. This program is a great value.


Katsura Shareware
5.3 MB

OS X 10.6 or later, 64-bit processor



Age Rating


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.