
In this article I discuss how to create a stereogram online with the help of 4 free online stereogram maker sites. With this website, you can create a stereogram by adding masks and patterns. Most of these websites provide you with various masks and patterns that you can use in your stereogram. Whereas in some websites it also lets you use/create your own masks and patterns.
A stereogram is a computer-generated image that provides a 3D representation of an object. It uses a 2D depth map image with a textured image on top. At first glance the stereogram looks like an abstract patterned image, but with a proper look we can find amazing 3D images hidden within. And it’s not just a play of imagination, hidden pictures are very realistic and real.
St.hjg.com.ar

St.hjg.com.ar is a Website for creating online stereograms has a project called mySIS where you can create your own stereogram by creating a new project. This online tool is the first to create text-based masks for stereograms. For that, you have to add some text along with the email id. You can scale the text and set the position by specifying the axis coordinates and rotating the angle.
On the next screen, this tool generates a mask from the text and shows it to you. If everything is as you want, you can move to the next step, if not, go back to the previous step for repairs.
Then, in the next step, you can select a pattern for the stereogram and define border emphasis for it. When you submit your selection, this tool generates a stereogram for you which you can save as a JPG image. You can visit this online stereogram maker website from here.
Flash Gear

Flash-Gear provides a free online stereogram maker tool. This tool requires Flash to run, so, make sure Flash is enabled in your web browser. Unlike other tools, in this tool, you can draw a mask. It provides you canvas area with brush tool with various size and color options. Using this brush tool, you can draw a mask for the stereogram.
When your sign is ready, just click on the Finish button present in the toolbar and the tool will generate a stereogram for you by automatically selecting a random pattern. As this tool is Flash based, so, you cannot download stereograms. But you can share it by its URL. Also, This Tool provides you with embed code to add stereograms on web pages. You can visit the online stereogram maker website from here.
EasyStereogramBuilder

EasyStereogramBuilder is one of the best websites to create stereograms online for free. The process of creating a stereogram involves two simple steps here. In the first step, you have to add a pattern for the stereogram. For that, you can choose a pattern image from 176 images provided by this website or upload your own image.
The second step is to add a mask. This website offers 210 different masking images that you can use in your stereogram. You can also upload your own image along with the mask and use it in the stereogram. Alternatively, you can create a text-only mask.
After adding the desired pattern and mask, you can create a stereogram by clicking on the Stereogram button. It gives you a link which takes you to a new tab and shows the stereogram. From there, you can download the stereogram image from the right-click context menu. You can visit the online stereogram maker website from here.
Sasibak

Sasibak offers a free online stereogram maker tool where you can create stereograms about nature, love, art, flowers, friends, funny things, and much more. All of these options are available as Depth Info (masks) for the stereogram. You can select any of those options as a mask for the stereogram and also add text, sets, or grooves.
Then, you can select a pattern image for the stereogram from the given options. You can also add text on pattern image. After adding all the information, you can create a stereogram
Here you can create custom made stereograms on anything; love, friends, nature, art, flowers, funny things, religion, initials of you or your favorite team, etc. You can design using pre-installed images for hidden depth images or repeat pattern images, or you can use text options. You can visit the online stereogram maker website from here.
Closing remarks: Those are 4 free online stereogram maker websites. With this website, you can easily create custom stereograms and share them with others.