Polka dot pattern generator lets you generate seamless repeating patterns for use in web background or with Photoshop as custom patterns and in custom graphics. You can generate one with the background and foreground color of your choice or even with a transparent background and use it which ever way you like. It's free with no credits required (but recommended).
Have you tried our Stripe Generator yet?
|Select Dot's Size (i.e. diameter in pixels)|
|Select Dot Spacing (in pixels)|