Raster vs Vector Graphics: When to Use Each and Why It Matters

The short answer: a raster image is made of pixels, so it looks great for photos but turns blurry when you enlarge it. A vector image is made of shapes defined by maths, so it stays perfectly sharp at any size, which makes it the right format for logos, icons and anything printed large.

Ever stretched a logo and watched it go fuzzy, or zoomed into a photo and seen tiny squares? That is the raster vs vector difference, and understanding it saves you blurry prints, rejected files and paying for designs twice.

Raster vs Vector at a Glance

What Is a Raster Image?

A raster image is a grid of pixels. Every photo from your phone is raster. Because the image has a fixed number of pixels, enlarging it spreads those pixels out and the edges go soft. That is why a profile photo stretched onto a poster looks blurry.

Raster is the right choice for photos, digital paintings and anything with smooth shading, gradients or texture.

What Is a Vector Image?

A vector image stores instructions: "draw a curve from here to here, fill it with this colour". Because the computer redraws it at whatever size you need, a vector logo looks just as sharp on a business card as on a billboard. You can also change its colours and shapes without any loss of quality.

Vector is the right choice for logos, icons, typography-based designs, illustrations with flat colour, stickers, signage and vehicle branding.

Which File Format Should You Use?

• JPG: photos on websites and social media. Small files, no transparency.
• PNG: graphics and logos for screens when you need a transparent background.
• WebP: modern web images, smaller than JPG and PNG.
• SVG: vector logos and icons for websites.
• PDF: print files; can contain vector and raster content together.
• AI and EPS: editable vector source files for designers and printers.

Resolution for Print: Why 300 DPI Matters

For print, raster images should be at least 300 pixels per inch (PPI/DPI) at the final print size. A 72 DPI image that looks fine on screen will print blurry. Large-format prints viewed from a distance, such as banners, can use lower resolution, but your printer will tell you what they need. Vector files avoid the problem entirely because they have no fixed resolution.

Can You Convert a Raster Image to Vector?

You can, but not just by changing the file extension. Saving a JPG as an SVG still leaves pixels inside. A real vector needs to be traced or redrawn. Automatic tracing works for simple shapes; for a logo, a designer should redraw it by hand so the curves are clean. Going the other way, from vector to raster, is easy: just export a PNG or JPG at the size you need.

When to Use Each

• Use raster for photos, digital artwork and most social media content.
• Use vector for logos, brand assets, print materials and anything that will be resized.

Most real projects combine both: a vector logo and type laid over a raster photo, exported as a PDF for print or a PNG for social media.

Why It Matters for Your Business

If your logo only exists as a small JPG or a WhatsApp image, every printer, signwriter and web designer will struggle with it. Make sure you own vector versions of your logo. When you pay for a logo, the delivery should include vector files; see what you should get from a logo designer.

Raster vs Vector FAQs

Is PNG raster or vector?

Raster. PNG supports transparency, which makes it useful for logos on screens, but it still gets blurry when enlarged.

Is PDF raster or vector?

It can be either, or both. A PDF exported from Illustrator keeps vectors; a scanned document saved as PDF is raster.

What format should my logo be in?

Keep a vector master (SVG, AI, EPS or PDF) and export PNG and JPG versions from it for everyday use.

Can AI upscaling fix a blurry logo?

It can improve a photo, but a logo should be redrawn as a vector instead. See our article on AI upscaling with Magnific.

Need your logo redrawn as a vector or a full set of brand files? Our brand identity service can help.