Why File Prep Matters More at Trade Show Size
Trade show graphics print far larger than almost anything else your design team produces - a single 10ft backwall panel can be six feet tall, and a 20x20 tower graphic can run even larger. Mistakes that are invisible on a business card or a web banner become obvious at that scale: a slightly low-resolution photo turns visibly soft, text set too close to the edge gets trimmed off, and a color that looked right on a monitor can shift once it's printed. Getting the file right before it goes to print is far cheaper than reprinting after a booth graphic arrives with a problem you could have caught in the design file.
Resolution: What "High-Resolution" Actually Means Here
Large-format printing doesn't need the same resolution as a printed photograph you'd hold in your hand, because viewers stand much further away from a trade show graphic than they would from a printed photo. All raster files - whether they're the final print file or images linked into a layout - should be supplied at 100-120 pixels per inch at 100% of the final print size. That's lower than the 300 DPI you might be used to for a brochure, but it's calculated for actual viewing distance, and going higher just means unnecessarily large files without any visible improvement once the graphic is printed and hung.
The common mistake here isn't using too low a resolution - it's scaling a smaller image up to fit a much larger canvas after the fact. A photo that's 100 PPI at its original size becomes 25 PPI if you stretch it to four times its size in your layout software, and that loss of quality is exactly what shows up as soft or pixelated once it's printed at full scale. Always place images into your layout at or near their intended final size, not scaled up from something smaller.
Bleed, Trim and Safe Zone
Every large-format print needs three reference lines: the bleed edge, where your background artwork extends past the final cut so no white sliver appears if the cut shifts slightly; the trim line, which is the actual finished edge of the graphic; and the safe zone, an inset margin inside the trim line where text and logos should stay clear of, in case of minor shifts during production or mounting.
Unlike resolution, there's no single bleed measurement that applies to every product - a tension fabric graphic, a rigid panel and a banner stand each have different bleed and safe zone requirements based on how they're finished and mounted. Always work from the graphic template for your specific display rather than assuming a standard bleed size, and when in doubt, ask before you finalize a design rather than after it's gone to print.
Color: CMYK, RGB and What to Expect
Color specifications depend on the type of file. Vector files built in Illustrator or InDesign should be supplied in CMYK, which is the standard color model for print production. Raster artwork - Photoshop files, JPGs and TIFFs - should be supplied in RGB for the most accurate color output once printed. If a specific brand color needs to match exactly, include the Pantone (PMS) reference in your file; without a Pantone reference, a hard copy proof, or a requested hard copy proof, color accuracy on large-format prints can't be guaranteed, since every monitor and every printer renders color slightly differently.
If color accuracy matters for your brand - and for most companies it does - request a hard copy proof before full production runs. It's a small extra step that catches a color shift while it's still cheap and easy to fix.
Accepted File Formats
Illustrator, Photoshop and InDesign files (current version or below) are all accepted, though InDesign is not preferred for large-format graphic production. High-quality, editable PDFs, Photoshop and Illustrator files are the most suitable formats for large-format printing and are preferred whenever possible. If your file includes text, either convert the type to outlines before sending it or include the actual font files along with an editable version of the layout, so nothing shifts or substitutes automatically if the printer doesn't have your exact font installed.
Common File Prep Mistakes
- Pulling images straight from a website. Web images are built for screens at 72 PPI and are almost always too low-resolution once scaled up to trade show size, even if they look fine in a browser.
- Ignoring safe zone on curved or wrapped graphics. A tension fabric display that wraps around a frame can distort text placed too close to a seam or corner - keeping important elements in the safe zone matters even more on non-flat surfaces.
- Sending a flattened JPG instead of a layered file. If a last-minute text change is needed, a layered, editable file can be fixed in minutes. A flattened image often means starting the design over.
- Assuming screen color matches print color. Monitors display color as light; printers reproduce it with ink or dye. Without a Pantone reference or a proof, some color shift between the two is normal, not a printing error.
- Skipping the graphic template. Every display has its own bleed, safe zone and panel dimensions. Designing to a generic size instead of your specific product's template is one of the most common causes of a graphic that doesn't fit once it arrives.
A Quick Pre-Flight Checklist
- Images placed at or near 100% of final print size, not scaled up from something smaller
- Resolution of 100-120 PPI at 100% for all raster files
- Bleed and safe zone match the graphic template for your specific display
- Vector files in CMYK, raster artwork in RGB
- Pantone references included for any brand colors that need to match exactly
- Fonts outlined, or font files and an editable layout included
- A hard copy or requested proof if color accuracy is critical
If you're not set up to prepare print-ready files in-house, our graphics and printing team can take your logo and brand assets and build the layout for you, so none of the above falls on your design team.