Dear Sign Lady, "I pulled my logo straight off our website and emailed it over. Why are you telling me it will look blurry on my new storefront sign?" — Pixelated in Pasadena
It is the single most common hiccup in the sign industry! When you stretch a small image off a screen across a 10-foot storefront, those tiny digital building blocks turn into a blocky, fuzzy mess. Understanding the difference between raster and vector files will save your sign project from pixelation.
Raster Graphics (Pixels)
- How they work: Built from a grid of tiny colored squares called pixels, much like a tile mosaic.
- Common formats:
.JPG,.PNG,.GIF,.WEBP
- The issue: They have a fixed resolution. Enlarging a 300-pixel web logo to fit a building sign is like trying to stretch a postage stamp over a queen-sized mattress—it stretches and distorts instantly.
Vector Graphics (Math)
- How they work: Built using mathematical points, lines, anchors, and curves rather than pixels.
- Common formats:
.AI,.EPS,.SVG,.PDF
- The benefit: Because it relies on math, a vector file scales to the size of a business card or a billboard with zero loss in quality or sharpness.
The Sign-Ready File Cheat Sheet
File Extension | Format Type | Sign Shop Ready? | Notes |
.AI | Vector | Yes | Native Adobe Illustrator file; the gold standard. |
.EPS | Vector | Yes | Universal vector exchange file. |
.SVG | Vector | Yes | Scalable vector format used for clean web & print paths. |
Vector / Hybrid | Usually | Must be exported directly from vector software with fonts outlined. | |
.PNG / .JPG | Raster | No | Excellent for screens and email signatures, unacceptable for large-scale production. |
Pro Tip: If a graphic designer created your logo, they have these vector files saved in your master brand folder. Ask them directly for your "outlined vector source file."
