How to Improve Vector Quality
Vector quality depends on both the source image quality and the post-trace refinement workflow. Better source preparation produces dramatically better SVG output. This guide covers pre-vectorization and post-vectorization steps to maximize vector quality.
About Improve vector quality
Vector quality means smooth curves, accurate color fills, clean closed paths, and correct path complexity — not too many anchor points, not too few. Achieving this from an auto-trace requires attention at both the input and output stages.
Pre-vectorization improvements: — Use the highest resolution source image available. 300 DPI minimum, 600 DPI preferred for logos and line art. — Convert to PNG before vectorizing. JPEG artifacts from compression create false edges that appear in the SVG as noise paths. — Increase contrast before vectorizing. A Levels or Curves adjustment that clips the shadows and highlights gives the vectorizer sharper edges to trace. — Remove background before vectorizing logos. A transparent background on the PNG prevents the background area from generating unwanted paths.
Post-vectorization improvements: — Run Object > Path > Simplify in Illustrator to reduce excess anchor points on curves. — Check all closed paths — open paths in a logo design cause rendering artifacts and prevent Pathfinder operations. — Merge overlapping fills using Pathfinder > Unite to eliminate visual artifacts where shapes overlap. — Verify color fills are flat (no unintentional gradients from the trace).
For logos specifically: if the auto-trace quality is insufficient after refinement, manual recreation in Illustrator using the Pen tool from the raster reference is always the gold standard. Use the vectorized SVG as a template layer and redraw the paths manually.