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 $200 \times 200$ 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 | Attribute | Raster Graphics | Vector Graphics | | :--- | :--- | :--- | | **Basic Unit** | Colored Pixels | Mathematical Paths & Points | | **Scalability** | Pixelates when enlarged | Infinitely scalable without quality loss | | **File Size Determinant** | Pixel dimensions & compression | Geometric complexity of paths | | **Primary Use Cases** | Photography, digital paintings | Logos, icons, typography, vector art |