Raster vs vector — what’s the difference? The two graphics formats that run every visual workflow.
Raster images are grids of pixels — fixed resolution, perfect for photographs, lossy when scaled. Vector images are mathematical paths — infinitely scalable, perfect for logos and production output, can’t represent photographic detail. Use raster for photos, screenshots, painterly art. Use vector for logos, icons, anything heading to a vinyl plotter, embroidery digitizer, screen-print press, or CNC table.
The core difference, in one paragraph
Raster images are made of pixels — small coloured squares laid out in a grid. The image 'is’ the pixel data. Vector images are made of paths — mathematical descriptions of points, curves, and fills. The image is the recipe to draw it, not the drawing itself. That single difference cascades into every other property they have.
Converting it yourself is fiddly. See where auto-trace breaks — free.
Our in-browser tracer shows the failure points; a human then redraws it clean and production-correct in 24 hours.
Need something custom? Email hello@vectorwiz.com
Side-by-side comparison
| Property | Raster | Vector |
|---|---|---|
| What it stores | Pixels (a grid of coloured squares) | Paths (math: points, curves, fills) |
| Scaling | Loses detail when enlarged (pixelation) | Infinite — sharp at any size |
| File size | Large (one entry per pixel) | Small (one entry per path) |
| Editing | Edit pixels — Photoshop, GIMP, Affinity Photo | Edit paths — Illustrator, Inkscape, Figma, Affinity Designer |
| Photographic detail | Excellent — millions of subtle tones | Poor — you’d need millions of paths |
| Logo / icon work | Locked-resolution output, bad for scaling | Production-ready, scales to any size |
| Print at any size | Needs source higher than print resolution | Print at any size from any source |
| Common formats | JPG, PNG, WebP, GIF, TIFF, PSD | SVG, AI, EPS, PDF, DXF |
| Typical use | Photographs, social media, screenshots | Logos, vinyl, embroidery, CNC, signage |
When raster is the right choice
- Photographs. Every photo is raster — pixels capturing what the camera sensor saw.
- Screenshots and screen captures.
- Painterly, textured, or impressionistic art where the goal is brush-stroke feel.
- Anything with photo-realistic gradients or millions of subtle tone variations.
- Quick web display where file size + load time outranks scalability.
When vector is the right choice
- Logos, wordmarks, icons, illustrations with flat colour areas.
- Anything heading to a vinyl plotter — closed cut paths required.
- Embroidery digitizing source — clean joins, no spurious nodes.
- Screen-print spot color separation work.
- CNC routing, laser cutting, plasma — closed-path DXF required.
- Engraving — single-stroke or outline-only paths.
- Channel letter / signage fabrication.
- Anything that needs to scale from business-card to billboard.
Why vector files are smaller (the math)
A 2000×2000 raster image stores 4 million pixels. Even at 8 bits per channel × 3 channels, that’s ~12 MB uncompressed. The same logo in vector might be 20–50 paths × a few control points each — a few KB total. Vector wins on size by 100×–1000× for logo-style art, every time.
Converting it yourself is fiddly. See where auto-trace breaks — free.
Our in-browser tracer shows the failure points; a human then redraws it clean and production-correct in 24 hours.
Need something custom? Email hello@vectorwiz.com
Scaling behaviour — the most visible difference
If you take a 200×200 raster logo and blow it up to 2000×2000, the browser or print software has to invent ~99% of the pixels via interpolation. The result is pixelation, blocky edges, blurry curves. The same logo in vector renders 2000×2000 just as sharp as 200×200, because the math is recomputed at the output size.
This is why production buyers care so much about getting vector source. A vinyl plotter cutting a 4-foot decal can’t do anything useful with a 300×300 raster logo — the cut path has to be drawn at the actual output size, which means starting from vector geometry, not pixels.
Converting between raster and vector
Vector → raster is trivial: every browser, print software, and image editor can rasterise a vector at any chosen output size. Raster → vector is the hard direction.
- For single-color, high-contrast logos: Adobe Illustrator’s Image Trace or Inkscape’s Trace Bitmap — fast but needs cleanup.
- For photographic source or stylised illustration: AI tools like Vectorizer.AI, vector.ai, Adobe Firefly — better quality than path-finding tracers.
- For production output (vinyl, embroidery, screen, CNC): hand rebuild by a designer. Auto-trace cleanup eats the same hours and produces worse files.
Deciding for a real job
- I’m posting on Instagram
- Raster. PNG or JPG. Vector formats don’t even render on social platforms.
- I’m printing a magazine ad
- Vector for the logo and type. Raster for the photo. PDF/X-4 with the right ICC profile bundles both for the press.
- I’m running a vinyl plotter
- Vector. AI, EPS, SVG, or DXF — closed paths required.
- I’m setting up an embroidery digitizer
- Vector source, stitch-friendly geometry. Hand-rebuilt vector beats auto-traced for digitizing quality.
- I’m laser-cutting acrylic
- Vector — closed-path DXF in AutoCAD 2000 dialect.
- I’m posting a wedding photo to a blog
- Raster. Lossy compressed JPG at 1200–1800 pixels wide. Vector would be huge and slow.
Naimur Rahman
Leads design direction and quality at VectorWiz. Reviews and redraws production artwork by hand across sign, screen-print, embroidery, and CNC work.
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