StampDy is a free browser-based design tool for creating custom marks and official-looking graphics without installing any software or setting up an account. The interface is built for speed: pick a base shape such as a circle, square, rectangle, or triangle, then adjust text, upload a logo, tweak fonts, borders, and colors while watching the changes update live on screen.

For users who prefer describing what they want rather than building it piece by piece, an AI generator handles the heavy lifting. Simply type a short description of the design you're imagining, and within roughly thirty seconds the tool returns a polished, high-resolution graphic with a transparent background, ready to drop into any document. This works well for notary marks, corporate approvals, contract sign-offs, or invoice authorization graphics, even for people with zero design background.

The platform is aimed at freelancers, small business owners, teachers, and event organizers who need a professional finishing touch on paperwork but don't want to hire a designer or learn complex software. Everything runs directly in the browser, including on phones and tablets, so a design can be started on a laptop and finished later on a mobile device without losing progress.

Once a design is complete, it can be exported in several formats — SVG, PNG, PDF, EPS, or DOCX — covering both digital workflows and physical production needs like ordering a printed rubber version. There are no watermarks added to the output and no hidden charges buried in the export step, so what you design is exactly what you get to keep and use.