Raster and vector graphics are two different ways to represent images digitally.
Raster Graphics
Raster graphics are made up of a grid of pixels, or tiny squares of color. Each pixel has its own unique color, and the image is created by combining all of these pixels together.
Think of a digital photograph - it's made up of millions of tiny colored dots. That's a raster image.
Examples of raster graphics: JPEG, PNG, GIF, TIFF
Vector Graphics
Vector graphics, on the other hand, are made up of mathematical equations that define lines, curves, and shapes.
Instead of pixels, vector graphics use points, lines, and curves to represent an image. These elements can be easily resized and manipulated without losing quality.
Examples of vector graphics: SVG, PDF, AI
Key Differences:
| Feature | Raster Graphics | Vector Graphics |
|---|---|---|
| Structure | Pixels | Mathematical equations |
| Scalability | Quality degrades when resized | Can be resized without losing quality |
| File Size | Typically larger | Typically smaller |
| Editing | Can be pixelated when edited | Can be easily edited and manipulated |
| Applications | Photos, realistic illustrations | Logos, diagrams, illustrations |
Practical Insights:
- Raster graphics are best for images with lots of detail and complex color gradients, such as photographs.
- Vector graphics are best for logos, diagrams, and illustrations that need to be scalable and easily edited.
Conclusion:
In short, raster graphics are like mosaics made of tiny tiles, while vector graphics are like blueprints made of lines and curves. Raster graphics are good for realistic images, while vector graphics are better for scalable designs.
