Resolution Requirements for Large Format Printing
The most common mistake people make when ordering banners and signs is submitting a low-resolution file they pulled from the internet or designed in a tool meant for screen, not print. What looks sharp at 1000px wide on your laptop will print blurry and pixelated at 6 feet wide on a vinyl banner.
The rule for large format printing: your artwork must be at least 150 DPI at actual print size, and ideally 100–150 DPI at full size. Here is why: a 6 ft × 2 ft banner is 72 inches × 24 inches. At 150 DPI, that file needs to be 10,800 × 3,600 pixels — substantially larger than any standard web image.
A better approach: design in a vector application (Adobe Illustrator, Inkscape, Affinity Designer) so your file is resolution-independent. Vector files can be scaled to any size without quality loss. Submit as PDF, AI, or EPS and your printer can output at any size with perfect sharpness.
The PRINTING United Alliance publishes file preparation standards for large format printing, including resolution, color profiles, and bleed requirements.
Bleed and Safe Zones
If your banner has a colored background that extends to the edges — which most do — you need to add bleed. Bleed is extra artwork that extends beyond the finished size of the banner. When the banner is trimmed or finished, slight variations in cutting can leave a thin white strip along the edge if there is no bleed. Standard bleed for banners is 0.25 inch on each edge.
The safe zone is the opposite concept: keep all critical content (text, logos, phone numbers) at least 0.5 inch inside the finished edge. Content placed too close to the edge can get cut off or obscured by grommets and hemming.
- Add 0.25 inch bleed on all sides beyond the finished size
- Keep text and logos at least 0.5 inch from the finished edge
- If your banner will have grommets, keep content 2 inches from the corner grommet positions
Vector or 150 DPI+ raster file. CMYK color mode. 0.25 inch bleed. Fonts outlined. Submitted as PDF, AI, or EPS. Include the finished size in the filename or notes.
Vinyl vs. Mesh: Choosing the Right Material
13 oz vinyl is the standard for most indoor and outdoor banners. It is opaque, smooth, and produces vibrant, accurate color. It is waterproof and UV-resistant, making it suitable for outdoor installations. Standard vinyl is best for banners displayed against a wall or solid mounting surface.
Mesh vinyl (perforated vinyl) has small holes across the surface that allow wind to pass through. It is essential for banners displayed across open gaps, fence lines, or outdoor structures where wind loading is a concern. A solid vinyl banner acting like a sail in 30 mph wind will pull hardware out of the wall, rip grommets, or tear. If your banner will be outdoors and not backed against a solid wall, use mesh.
For interior signage, foam board and PVC board (Sintra) are popular options for rigid signs. Coroplast (corrugated plastic) is the standard for yard signs — it is lightweight, weather-resistant, and accepts print cleanly.
The Sign Industry resource network and Big Picture Magazine are two authoritative sources on large format materials, installation, and design best practices.
Grommets, Hemming, and Hanging
Most banners are finished with a welded hem (heat-sealed border) and grommets — metal rings punched through the banner at regular intervals for hanging. Standard grommet spacing is every 2 feet along the top and bottom edges, plus corners.
- For lightweight display (lobby, event table), a banner stand or pocket hem (no grommets) works well.
- For outdoor installation with rope or zip ties, grommets every 24 inches provide secure attachment.
- For very long banners (over 8 feet), add grommets along the sides as well to prevent sagging.
- Wind pockets or cut-outs can be added to large outdoor banners to reduce wind resistance.
Color Profiles: CMYK vs. RGB
All printers print in CMYK (Cyan, Magenta, Yellow, Black). Computer screens display in RGB (Red, Green, Blue). These are different color spaces, and the conversion between them can cause color shifts — especially with bright greens, electric blues, and vivid oranges.
Always design your banner artwork in CMYK mode. When you convert a design from RGB to CMYK at submission, colors can shift noticeably. Designing in CMYK from the start means the colors you see in your design software are accurate representations of what will print.
What Makes a Sign Readable From a Distance?
- Font size: As a rule, every 1 inch of letter height is readable at approximately 10 feet. A 6-inch tall headline is readable at 60 feet. For yard signs viewed from a moving car, use letters no smaller than 3 inches tall.
- High contrast: Dark text on light background or light text on dark background. Avoid color combinations with low contrast — yellow on white, gray on light blue.
- Fewer words: A sign should communicate one primary message, one phone number or URL, and nothing else. Every additional element reduces the speed at which your main message lands.
- Bold, sans-serif fonts: Script and thin serif fonts are decorative but difficult to read at distance or speed. Use bold sans-serif fonts (Impact, Bebas Neue, Montserrat Bold) for primary text.
Order Custom Banners and Signs in Chicago
June's Tees & Things prints banners, yard signs, step and repeat backdrops, foam boards, and more for businesses, events, and graduations across Chicago. Learn more on our banners and signs service page or call (773) 849-1854 for a fast quote.