Vector vs Raster Graphics: Technical Differences & When to Use Each

Vector vs Raster Graphics: Technical Differences & When to Use Each

All 2D digital imagery is divided into two primary categories: Vector Graphics and Raster (Bitmap) Graphics. Understanding their underlying mathematical structures ensures you select the correct asset type for branding, web applications, and print.

1. Raster (Bitmap) Graphics

Raster images are composed of a fixed grid of individual square colored blocks called pixels:

• Formats: JPEG, PNG, WebP, GIF, BMP, TIFF.
• Resolution-Dependent: If you zoom in or enlarge a 200 × 200 px raster icon, the pixels stretch, causing visible pixelation and blur.
• Strengths: Excels at rendering complex photography, continuous lighting gradients, subtle shadows, and facial portraits.

2. Vector Graphics

Vector images are composed of mathematical coordinates, geometric paths, curves (Bezier curves), and polygons:

• Formats: SVG, AI, EPS, PDF.
• Resolution-Independent: You can scale a vector graphic to the size of a postage stamp or a 50-foot highway billboard without losing a single drop of clarity.
• Strengths: Ideal for logos, typography, line diagrams, maps, UI icons, and brand emblems.

3. Comparison Matrix