Understanding the difference between vector images and bitmap images is essential for anyone working with artwork, logos, or files for print. Choosing the wrong type can lead to blurry prints, oversized files, or artwork that looks fine on a screen but falls apart when enlarged for posters or signage.
This guide explains each format clearly, when to use them, and why the right file type matters so much in print.
What Is a Vector Image?
A vector image is created using mathematical paths - points, lines, curves and shapes. Because it's built from formulas rather than pixels, the image can scale infinitely without losing quality.
Common vector file types
- AI
- EPS
- SVG
- PDF (when created from vector artwork)
Why vectors are so important
- They stay crisp at any size
- Perfect for logos, icons, and text-based designs
- Easy to edit without losing clarity
- Ideal for printing on everything from business cards to A0 posters
A vector logo can be printed on a pen, a billboard, or a van wrap - all from the same file - and it will remain pin-sharp.
What Is a Bitmap Image?
A bitmap image (also called a raster image) is made of individual pixels. Each pixel holds a colour value, and together they create the picture. When enlarged too far, the pixels become visible, and the image loses quality.
Common bitmap file types
- JPG / JPEG
- PNG
- GIF
- TIFF
- PSD
When bitmaps are ideal
- Photographs
- Detailed artwork with shading or texture
- Web graphics and social media images
Bitmaps capture detail beautifully, which makes them perfect for photography. However, because they are resolution-dependent, they must be supplied at the correct size and DPI for print.
