Piktochart is a free, web-based graphic design tool for creating a variety of designs, including:
Piktochart is easy to use, with many pre-set templates and images provided within the tool.
Sign up for a free account at piktochart.com
Click the shape to have it appear in your design.
Unfortunately, there is no 'collaborative' feature offered on the basic, free Piktochart account. Only you can edit your work from your original account. Instead, try:
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