Bitmap images are made up of individual pixels, each with its own color. Resizing a bitmap image can reduce its quality as pixels are enlarged or removed. Vector images use mathematical formulas to define points, lines, and curves, allowing the image to be resized without quality loss. Key examples of bitmap images are photographs and computer icons, while vector images are well-suited to logos, posters, and other artwork.

1. Bitmap
Which image
looks sharper?
Let’s zoom in…
Image A
Image B

2. Vector
Lets make the
phone larger
Does it lose its
sharpness?
and
again…

3. Why use bitmap?
You can easily change
the colour of each pixel!
Before
Paint.net software used to
manipulate image
After…

4. Key points
Bitmap
Made up of pixels;
each pixel = 1 colour.
Image made up of many pixels.
Resizing reduces quality.
Vector
Easily resized without loss of quality.
Uses points, lines and curves –
combined to make an image
(there are some mathematical
formulae involved).
Examples include…
Bitmap
Photographs, icons on the computer,
scanned images.
Vector
Logos, posters, artwork.