Guide · 2 min read

What a vector file is, and when you need one.

What a vector file is, the formats it comes in, why a printer or a sign maker asks for one, and how to tell a real one from pixels in disguise.
A logo on a pale blue ground: a navy mountain with an ochre sun behind its right shoulder, above the word NORTHWIND in navy capitals
The PNG as uploaded696 KBVecSnap's SVG2.1 KB115 anchor points

A vector file stores a picture as shapes, lines and curves with their colors. It is drawn again, sharp, at any size, and each part stays editable; a pixel file is a fixed grid that blurs when enlarged. Logos live as vector files because a website, a business card and a sign each need a different size. The usual vector formats are SVG, PDF, EPS and AI; a JPG or a PNG saved under one of those names still holds pixels.

Updated Oct 24, 20262 sources ↓

The definition

What is a vector file?

A file that describes a picture as shapes: a curve by its anchor points, a circle by its center and radius, each with its color. The software draws it again at whatever size you ask, so it is never blurry.

Up close, a logo's vector file keeps every edge clean, where the picture it came from shows its pixels.

Original
1,200 pxthe PNG as uploaded, its own pixels
VecSnap
115anchor points in the whole file

The formats

What are the vector file formats?

Four you will meet: SVG, the web's own; PDF and EPS, which travel to print shops; and AI, Adobe Illustrator's working file.

  • SVG

    What it is
    The web's open standard for vector graphics
    What it is for
    Websites, apps, Figma, cutting machines

  • PDF

    What it is
    A document that can hold shapes, text and pixels
    What it is for
    Print shops, sending a file to anyone

  • EPS

    What it is
    An older print format
    What it is for
    Printers and sign makers who still ask for it

  • AI

    What it is
    Adobe Illustrator's own working file
    What it is for
    Editing in Illustrator

Real or not

How do I know if my file is a real vector?

Zoom in far. A vector stays sharp; pixels turn into squares. An SVG can also be opened in a text editor: paths and circles are shapes, an image element is pixels wrapped in an SVG.

Why printers ask

Why does a printer ask for a vector file?

Because a print is made at the size the printer chooses: a business card, a shirt, a sign. A vector file is drawn sharp at each of them; a pixel file is only as sharp as its pixels allow.

Questions

Vector files, answered.

The questions people type, and ask assistants, about vector files.

Sources

Your logo stored as shapes, usually an SVG or a PDF: one file that prints, cuts and displays sharp at any size.

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