Vector graphics describe shapes with mathematical paths; raster graphics describe an image with a grid of pixels. Choose vector artwork for a logo that must work on both a business card and a banner. Choose raster images for photographs, textured artwork and pixel-by-pixel editing. Many finished designs contain both.
The practical question is what you need to change next: the shape of an object, the appearance of a photograph, or the size of the final output. Understanding that distinction prevents blurry logos and unnecessarily complicated files.
How do paths and pixels work?
A raster image records color across rows and columns. A 1200 × 800 image contains 960,000 pixels. A curve in that image is represented by colored pixels along its edge, often with intermediate colors that make the boundary look smoother.
A vector circle can instead be described by its geometry and appearance. Paths use points and curves; fills color the inside, while strokes define outlines. You can move a point or change a stroke without repainting every part of the image. Aalto University’s guide explains this distinction between pixel grids and editable paths.
Think of a café menu: the coffee photograph is naturally raster, while a simple cup icon can be vector. Neither is inherently more professional. Each stores the visual information in a way that suits the subject.
Why does raster artwork blur when enlarged?
A raster image has a finite supply of original pixels. Enlarging its display stretches that information over more space. Resampling creates additional pixels by estimation, which may smooth the result but cannot guarantee recovery of missing detail.
For print, divide pixel width by the intended width in inches to find effective pixels per inch, or PPI. A 2400-pixel-wide photo printed 8 inches wide provides 300 PPI. At 16 inches wide, the same file provides 150 PPI. These are calculations, not promises of a particular print quality.
Changing a resolution field from 72 to 300 without resampling does not create detail. Adobe’s resizing guidance distinguishes changing physical size from changing pixel dimensions. Ask the printer for its preferred resolution at the final size; viewing distance and printing method matter. Our guide to photo sizes and cropping explains another common source of unexpected results.
Does vector mean unlimited print quality?
Vector geometry can scale without becoming a larger grid of source pixels. That makes it useful for repeated resizing. However, a screen still displays pixels, and a printer still produces marks with physical limits. Fine lines, small lettering and closely spaced details can disappear or merge at small sizes.
Also inspect everything inside the design. A vector logo placed over a low-resolution photograph does not improve the photograph. Raster textures, shadows or other effects may have their own resolution settings. Preserve the editable original and check the exported file, rather than assuming a vector-based document makes every element scalable.
Which format should you export?
Match the delivery format to the receiving application. MDN’s image-format guide describes the strengths of common web formats. A practical starting point is:
Logo or simple icon for a website: SVG when the platform accepts it and the artwork contains suitable paths. If SVG is unsupported, export a PNG at the required pixel dimensions.
Photograph for a website or message: JPEG for broad compatibility, or WebP or AVIF when the destination supports them. Check the compressed result for visible artifacts rather than choosing the smallest possible file.
Screenshot, transparent cutout or crisp raster graphic: PNG is useful when you need lossless storage or transparency. PNG does not make a small image resolution-independent.
Commercial print layout: use the printer’s requested PDF preset and specifications for bleed, fonts, color and image resolution. Keep the source document separately for editing. For photographic originals, our RAW versus JPEG workflow guide covers the capture-stage decision.
Are PDF and SVG always entirely vector?
No. A PDF can contain vector paths, text and raster images together, or just a scanned page. Adobe’s raster and vector overview explicitly identifies PDF as supporting both. Saving a JPEG inside a PDF does not turn its pixels into editable curves.
SVG is designed for scalable graphics, but it can reference or embed raster pictures. The SVG specification’s embedded-content section documents this capability. Inspect the objects in an appropriate editor if scalability matters; the extension alone is not enough.
Text also needs care. Live text remains editable but depends on suitable font handling. Converting text to outlines produces shapes and sacrifices ordinary text editing. Rasterizing it produces pixels. Keep an editable version before outlining or flattening, and follow the recipient’s font requirements.
Can you convert a raster image into a vector?
Yes, through manual redrawing or automatic tracing. Tracing estimates paths from pixel boundaries. It works best when the source and the intended result have clear, simple shapes. A clean monochrome symbol is a more realistic starting point than a detailed landscape.
Automatic tracing cannot reliably reconstruct the original designer’s curves or recover missing photographic detail. It may trace compression noise, create excessive points or simplify features you wanted to keep. Adobe’s tracing guidance recommends manual work for precise geometry and identifies limits with photographs and fine detail. For lettering, finding the correct font and retyping is often better than tracing a blurry screenshot.
Frequently asked questions
Is vector always a smaller file?
No. Simple shapes can be compact, but intricate paths and embedded images can make a vector document large. Raster file size depends on dimensions, compression and content. Compare actual exports.
Is a transparent image automatically vector?
No. Transparency describes how the background behaves. A transparent PNG still contains pixels; an SVG may contain transparent shapes or embedded pictures.
What should I ask a logo designer to deliver?
Request an editable vector master, an agreed scalable delivery format, and raster exports sized for your actual uses. Confirm font handling and whether any embedded images or effects limit scaling. Open the delivered files before approving them.
Optional drawing tools
A pen tablet can make freehand drawing more comfortable, but it does not determine whether your artwork is vector or raster. If you are comparing input devices, you can browse pen tablets for graphic design on Amazon. Check compatibility with your computer and drawing application before buying.
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