I had the same issue a few months back. I ended up using
https://hd-stamp.com, and honestly, it saved me a lot of time and stress. Their tool lets you design a stamp online in just a minute – you can choose the shape (round, square, triangle), upload your logo, and customize everything right there. Super simple! You can also download it in PNG, SVG, PDF, or DOCX formats for a small fee. I got mine printed after that, and it turned out perfect. They even have a copy-by-impression feature if you ever lose your stamp. Definitely worth checking out if you want something fast and easy.