TL;DR: Vector vs raster comes down to how an image is stored. Raster images (JPG, PNG, WebP, GIF, TIFF) are grids of colored pixels. They handle photos and complex detail well but blur or look blocky when enlarged. Vector images (SVG, AI, EPS, and vector PDF) are built from mathematical paths: points, lines and curves. They can scale to any size without losing sharpness, which makes them ideal for logos, icons, illustrations and type. Use raster for photographs and painted artwork; use vector for anything that must stay crisp from a favicon to a billboard.
If you have ever stretched a logo and watched it turn fuzzy, you have run into the vector vs raster problem. Every digital image is one or the other, and picking the wrong type causes blurry prints, huge files and painful redesigns. This guide explains the difference, the common file formats for each, and exactly when to use which.
What is a raster image?
A raster image, also called a bitmap, is a rectangular grid of tiny squares called pixels. Each pixel stores a single color. Put millions of them together and you get a photo.
Two numbers define a raster image’s quality:
- Pixel dimensions, such as 1600 x 900. This is the total number of pixels and is fixed when the image is created.
- Resolution for print, usually measured in PPI or DPI. A common rule of thumb for good-quality print is around 300 pixels per inch at the final printed size.
Because the pixel count is fixed, you can’t enlarge a raster image without the software inventing new pixels. Scale it up too far and you see blur or visible blocks, an effect called pixelation.
What is a vector image?
A vector image stores instructions instead of pixels: “draw a curve from this point to that point, fill the shape with this color, give it a 2-point outline.” These shapes are often built from Bézier curves, which use control points to define smooth curves.
When you display or print a vector file, the software calculates the shapes at whatever size you need. That’s why a vector logo looks just as sharp on a business card as on the side of a bus. The SVG format, a W3C standard, is the most common vector format on the web.
Vector vs raster: side-by-side comparison
| Feature | Raster | Vector |
|---|---|---|
| Made of | Grid of pixels | Mathematical paths and shapes |
| Scaling | Loses quality when enlarged | Scales to any size without losing sharpness |
| Best for | Photos, digital paintings, textures, screenshots | Logos, icons, illustrations, typography, diagrams |
| Detail and realism | Excellent; handles subtle gradients and photo detail | Best for flat colors and clean shapes; photorealism is hard |
| File size | Grows with pixel count | Grows with the number of shapes; often small for simple art |
| Editing | Pixel-level editing (retouching, painting) | Edit shapes, colors and paths without damage |
| Common formats | JPG, PNG, GIF, WebP, TIFF, HEIC, PSD | SVG, AI, EPS, vector PDF |
| Typical software | Photoshop, GIMP, Affinity Photo, Procreate | Illustrator, Inkscape, Affinity Designer, Figma |
Common raster file formats
- JPG/JPEG: lossy compression, small files, great for photos. Does not support transparency.
- PNG: lossless compression and transparency support. Good for screenshots, UI graphics and images with sharp edges.
- WebP: a web format that supports both lossy and lossless compression and transparency, often producing smaller files than JPG or PNG.
- GIF: limited to 256 colors but supports simple animation.
- TIFF: high-quality format often used in print and archiving.
- PSD: Photoshop’s layered working format.
Common vector file formats
- SVG: an open, XML-based standard that browsers render natively. Ideal for logos and icons on websites; see MDN’s SVG documentation.
- AI: Adobe Illustrator’s native working file.
- EPS: an older PostScript-based format still requested by some printers.
- PDF: can contain vector graphics, raster images or both, which makes it a popular hand-off format for print.
One caution: putting a raster image inside an SVG, AI or PDF file does not make it vector. If the file only wraps a photo, it still has a fixed pixel count.
When to use raster
- Photographs of any kind
- Digital paintings with brush textures and soft blends
- Screenshots
- Complex images with lots of fine, irregular detail
- Social media posts and blog images, saved at the size they will be shown
When to use vector
- Logos. A logo has to work everywhere, from a 16-pixel favicon to signage, so the master file should always be vector.
- Icons and UI elements that need to look crisp on high-density screens.
- Illustrations and infographics with flat colors and clean lines.
- Typography and lettering. Fonts themselves are vector outlines, which is why text stays sharp at any size. For more on type, see our guides to serif vs sans serif and kerning vs tracking.
- Anything printed large, such as banners, vehicle wraps and signage.
Converting between vector and raster
Vector to raster (easy)
Exporting a vector file as PNG or JPG is called rasterizing. You choose a pixel size, and the software draws the shapes at that resolution. Keep the original vector file so you can export again at other sizes.
Raster to vector (harder)
Turning pixels into paths is called vectorizing or image tracing. Tools like Illustrator’s Image Trace or Inkscape’s Trace Bitmap can do it automatically, and the results work well for simple, high-contrast artwork. Photos rarely convert well: you get either a posterized look or thousands of messy shapes. For logos, redrawing by hand usually gives the cleanest result.
Color and print considerations
Both types can be saved in different color modes. Screen work uses RGB, while professional printing often needs CMYK. If you are preparing files for print, read our explainer on RGB vs CMYK before you export, and check whether your printer wants vector PDFs or high-resolution raster files.
Quick decision checklist
- Is it a photograph? Use raster.
- Will it need to scale to many sizes (logo, icon, signage)? Use vector.
- Is it mostly flat colors, lines and text? Vector is usually better.
- Does it have soft painterly textures? Raster.
- Unsure? Keep a vector master file when you can, and export raster copies for specific uses.
FAQ
Is PNG vector or raster?
PNG is a raster format. It supports transparency, but it is still made of pixels and will blur if enlarged too much.
Is SVG better than PNG?
For logos, icons and simple illustrations, SVG is usually better because it scales cleanly and is often smaller. For photos and complex images, PNG or another raster format is the better choice.
Can Canva or Figma make vector graphics?
Figma is a vector-based design tool and can export SVG. Canva also offers SVG downloads on some plans. Our Figma vs Canva comparison covers how the two differ.
The Teck Hustlers Editorial Team covers technology, business, finance and gaming news for readers who want the story behind the headline. Every article is researched, written and edited by our in-house team, checked against company announcements, filings and reputable reporting, and updated when new facts emerge. We focus on what each development means for founders, professionals, investors and everyday users. Have a tip or a correction? Reach us through our contact page.
