Sign Printing File Guidelines

Vector files — PDF, AI, and EPS — are strongly preferred for sign printing. Vector artwork scales to any size without losing quality, which is critical when a design created on screen needs to print at 3x5 feet or larger. High-resolution TIFF and PSD files are accepted for photographic elements but should be embedded within a vector layout for the best results. JPEG files are not recommended for large-format work because compression artifacts become visible at sign scale. If your only available file is a JPEG, submit the highest resolution version you have and we will advise on printability.

Resolution requirements for signs vary based on finished size and viewing distance. For small signs (up to 24 inches): 300 DPI at full size — the same standard as paper printing. For medium signs (24 to 48 inches): 200 DPI at full size provides sharp results at typical viewing distances of 5 to 10 feet. For large banners and signs (48 inches and above): 150 DPI at full size is sufficient because these are viewed from greater distances. For very large format (8 feet and above): 100 DPI minimum at full size. The key principle: as viewing distance increases, required resolution decreases. Our team will advise if your file resolution is insufficient for your selected size.

Submit all files in CMYK color mode. Sign substrates interact with ink differently than paper — corrugated plastic, aluminum, and vinyl each absorb and reflect color in unique ways. Designing in CMYK from the start ensures the most accurate color translation from screen to substrate. For Pantone-critical applications such as branded corporate signage, specify PMS numbers in your order notes. UV-cured inks provide excellent color gamut on all substrates, but some extreme color values may require adjustment. Our prepress team flags any concerns before production.

Standard signs require 0.125 inches of bleed on all sides, the same as paper printing. For vinyl banners, the considerations are different: allow at least 1 inch of clear space from all edges for grommet placement and hem folding. Any text, logos, or critical content should be at least 1.5 inches from banner edges to account for grommets, pole pockets, and wind-flex that obscures edge content. For rigid signs with routed edges (cut-to-shape signs), extend your artwork 0.125 inches past the cut line on all contours.

The standard readability rule for outdoor signage: text should be at least 1 inch tall for every 10 feet of intended viewing distance. A roadside sign viewed from 50 feet needs text at least 5 inches tall for the primary message. Secondary information can be slightly smaller but should still follow the distance ratio. Use bold, high-contrast color combinations — dark text on light backgrounds or white text on dark backgrounds. Avoid thin fonts, decorative scripts, and detailed serifs that lose legibility at distance. Our team can review your design for readability if requested.

Convert all text to outlines (curves) in your vector file before submitting. This eliminates font substitution issues and ensures your text renders exactly as designed regardless of which fonts are installed on our production systems. If submitting a layered file, include the font files with your submission. For sign text visible from distance, use sans-serif fonts with medium to bold weights for maximum legibility. Avoid fonts with thin strokes — they may not reproduce reliably when enlarged to sign scale.

Corrugated plastic (Coroplast): Printed surface has a slight texture from the fluted core beneath. Avoid very fine detail and thin rules that may appear uneven over the fluted surface. Aluminum composite: Smooth surface produces the crispest detail of any sign substrate. Suitable for photographic images and fine typography. PVC board: Smooth, paintable surface works well for both printed and cut vinyl applications. Vinyl banner: Flexible material that will flex in wind. Avoid critical text placement near edges where wind-flex is greatest. For all substrates, our prepress team can advise on artwork adjustments specific to your chosen material.