Vector vs Raster: Key Differences Between Image Types
Published on April 9, 2026
Vector images are built from mathematical paths (lines, curves, shapes) that can scale to any size without losing quality. Raster images are grids of colored pixels that become blurry or pixelated when enlarged beyond their original resolution. This core difference determines which type you should use for logos, photos, print, and web graphics.
How They Work
A vector file stores instructions like "draw a circle at coordinates X,Y with radius R and fill it blue." The rendering engine recalculates these instructions at whatever size you need, so a logo looks equally sharp on a business card and a billboard. A raster file stores a fixed grid of pixels, each with a specific color value. A 1000x1000 image has exactly one million pixels. Scale it up to 2000x2000 and the software has to guess what goes between the existing pixels, which creates blur.
Common Formats
Vector formats include SVG, AI (Adobe Illustrator), EPS, and PDF (when containing vector data). Raster formats include JPG, PNG, WebP, GIF, TIFF, and BMP. Some formats like PDF can contain both vector and raster elements. SVG is the standard vector format for the web, while JPG and PNG dominate raster web usage.
File Size
Vector files are typically tiny for simple graphics. An SVG logo might be 5-50 KB regardless of the display size. Raster files grow with resolution: a 4000x3000 photo at high quality can easily be 10-20 MB. However, for complex illustrations with thousands of paths, vector files can become large too. Photographic content is always more efficient as raster since the mathematical description of every pixel variation would be enormous.
Editing Differences
Vector graphics let you select and modify individual shapes, change colors, move elements, and scale without any quality loss. Raster editing operates on pixels: you can paint, blur, sharpen, and apply filters, but you cannot easily separate objects from the background. Photo editing is inherently raster-based, while logo and icon design is inherently vector-based.
When to Use Each
Use vector for logos, icons, typography, illustrations, diagrams, and anything that needs to scale across different sizes and media. Use raster for photographs, screenshots, detailed artwork, and any image with complex gradients and millions of colors. For web use, SVG is ideal for UI elements and logos, while WebP or JPG works best for photos and backgrounds.
Need to convert between image formats? Try our PNG to JPG converter or image to WebP converter. For more format comparisons, see SVG vs PNG, SVG vs WebP, and EPS vs SVG.