What is your minimum font size?
It depends on the font style, font color and background color. Generally, at least a 6 pt. font is required. In certain cases, we've been able to print 4 pt. fonts at an acceptable quality level.
We do not guarantee small fonts will print legibly. There are too many font styles and color combinations for us to know for certain if an especially small font will be legible when printed. Additionally, the legibility of small fonts is often subject to the opinion of the viewer.
If you're concerned about the legibility of your fonts when printing, we recommend ordering a small batch of stickers using our custom samples service. If the legibility is acceptable, you can place a reorder of the exact design.