What Is a Vector File?
A vector file stores an image as a set of mathematical instructions — points, curves, and filled shapes — rather than a grid of colored pixels. The result is an image that can be reproduced at any size, from a postage stamp to a billboard, with perfectly sharp edges every time.
The practical reason this matters for logos: a logo will appear everywhere — on business cards (small), websites (medium), trade show banners (large), and vehicle wraps (enormous). A single vector file handles all of these. A pixel-based file (PNG or JPG) can only do this cleanly up to its native resolution; beyond that, it blurs.
Pixels vs paths: what makes a file "vector"
Raster images (PNG, JPG, GIF, BMP) are grids of colored squares called pixels. A 1,000 × 1,000 pixel image has one million fixed data points. Zoom in far enough and you see the individual squares. Enlarge the image beyond its native resolution and the software has to guess what to fill in — the result is a blurry, pixelated edge.
Vector images describe the same shapes mathematically. A circle is center (100, 100), radius 50, fill #231F20. A curve is a Bézier function with four control points. When you render the vector at any size — large or small — the software recalculates the geometry and draws it sharp. There are no pixels to run out of.
Common vector file formats
SVG — Scalable Vector Graphics
SVG is the modern standard for vector graphics on the web. It is an XML-based text format, which means it is human-readable, editable in any text editor, and natively supported in all modern browsers. SVG files are small (a typical logo is 5–30 KB), index well in search engines, and can be embedded directly in HTML.
SVG is the output format of Logo Vectorize and the format most design tools (Figma, Sketch, Illustrator) accept and export. It is the best general-purpose vector format for logos today.
AI — Adobe Illustrator
AI is Illustrator's native format. It is based on PDF and stores all of Illustrator's internal data (layers, artboards, live effects). It is the format designers typically use while actively working on a logo. Most printers accept AI files, but they require Illustrator to open.
EPS — Encapsulated PostScript
EPS is an older vector format from the PostScript era. Many professional print workflows still use it, particularly for signage and commercial printing. If a printer or supplier specifically asks for EPS, open your SVG in Illustrator or Inkscape and export it as EPS.
PDF (vector-mode)
A PDF can be either raster (a scanned page) or vector (shapes drawn in a vector program). When exported from Illustrator or Figma, a PDF contains the same geometric paths as an SVG or AI file. Many printers accept "print-ready PDF" as a submission format. Open the PDF in Illustrator to confirm it is vector: if you see paths in Outline view, it is.
How to tell if a file is vector or raster
The easiest test: zoom in to 400% or more. Vector files remain perfectly sharp at any zoom level. Raster files show individual pixels (the "jaggies") when zoomed past their native resolution.
You can also check the file extension: SVG, EPS, and AI are always vector. PNG, JPG, GIF, and BMP are always raster. PDF can be either — the zoom test is the reliable method.
Why logos must be vector files
A logo is the one asset that needs to look identical across the widest possible range of sizes and media. Vector satisfies all of these simultaneously:
- Print: professional printers output at high DPI (often 300–1200 dpi or more). A raster logo needs to be at least 300 dpi at the final print size; vector files are resolution-independent, so they always output at the printer's native resolution.
- Merchandise: screen printing, embroidery, and laser engraving machines receive path data, not pixel data. They require vector artwork to work.
- Web: SVG logos look sharp on high-DPI (Retina) displays without needing a 2× or 3× image version.
- Recoloring: vector paths are easy to recolor — a designer can change any fill to match a brand palette in seconds. Raster color changes require destructive pixel editing.
How to get a vector file for your logo
If a designer created your logo, ask them for the source file — it should be an AI or SVG. If the original vector file was lost, or if you only received a PNG or JPG, you need to vectorize the logo: convert it from pixels back into geometric paths.
How to vectorize a logo covers the process in detail. The short version:
- Upload your PNG or JPG to Logo Vectorize.
- The AI traces the image into clean SVG paths in seconds.
- Edit colors and clean up any stray paths in the browser editor.
- Download the print-ready SVG.
Frequently asked questions
How can I tell whether a file I received is actually vector?
Three tests, in order of reliability. (1) Zoom test: open the file and zoom to 800%. Crisp edges indicate vector; pixelated or blurry edges indicate raster. (2) Extension: SVG, AI, EPS, and CDR are always vector. JPG, PNG, GIF, and BMP are always raster. PDF and WebP can be either. (3) Outline view: open in Inkscape (free) or Illustrator and switch to wireframe view. You will see either smooth paths with anchor points (vector), or a single embedded rectangle containing a raster image.
Why do embroidery and screen-printing vendors need vector files?
Embroidery machines follow stitch-path instructions — sequences of (x, y) coordinates that tell the needle where to sew. The machine controller generates those coordinates by tracing the geometric paths in the vector file. A raster image has no paths, only per-pixel color values — there is nothing to extract. Screen printing separates artwork into one layer per color, each printed through a physical mesh. Those color layers are defined as discrete shapes in the vector file; raster images cannot be separated that way.
Can a vector file contain a photograph?
Yes. AI, EPS, PDF, and SVG files can embed raster images inside the vector container. The photograph travels in the file but does not gain vector properties — it still has a fixed resolution and will blur if scaled beyond its native size. Only the geometric elements drawn as paths are truly resolution-independent. A common example: a brand kit PDF that contains a vector logo alongside a raster team photo — the logo scales perfectly, the photo does not.
What is the difference between live text and outlined text in a vector file?
Live text is set in a typeface and remains typographically editable — you can change the wording, adjust tracking, or swap the font. Outlined text has been converted to path shapes: the letter forms look identical but the text object is gone. Printers require outlined text because they may not have the original font installed; without it, their software substitutes a system default, corrupting the layout. Before sending any vector file to a printer, convert all text to outlines (Illustrator: Type → Create Outlines; Inkscape: Path → Object to Path).
What vector format should I send my print vendor?
Ask the vendor directly — print workflows differ. Most professional printers accept PDF/X-1a or PDF/X-4, the current standard for print-ready PDFs. Older workflows prefer EPS. Screen-print and embroidery shops often ask for AI or EPS. If you have an SVG, you can export to any of these from Inkscape (free) or Affinity Designer without an Illustrator subscription. A five-second email to the vendor avoids a file rejection that delays the entire project.
Related guides: How to vectorize a logo · SVG vs PNG