Is a PDF a Vector File?
People call PDFs "vector" — but the truth is nuanced. A PDF can contain vector, raster, or both.
Quick answer: a PDF is a container. It can store vector drawing (sharp at any zoom) or raster images (pixel-based), often both in one file.
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Vector vs raster inside PDF
- Vector: text and shapes from design apps stay crisp when scaled.
- Raster: scans and photos are pixels, which blur when enlarged.
Why it matters
For print and logos you want vector; for photos, raster is fine. Compressing a raster-heavy PDF mostly shrinks images, not text.
FAQ
How do I tell what is inside?
Zoom way in: crisp edges = vector; blurry = raster.
Does compressing hurt vectors?
Good compressors keep text sharp; only raster images get lighter.