How to Smooth Vector Lines
Jagged vector lines, rough path edges, and bumpy curves are common after tracing raster images. Smoothing them transforms a noisy trace into professionally refined vector artwork with clean, flowing curves.
About How to smooth vector lines
Rough vector lines occur when the auto-tracer follows pixel edges too closely, generating many anchor points that closely hug the raster edge noise. Smoothing converts these zigzag sequences of straight segments into smooth Bezier curves.
Method 1 — SVG Cleanup (automatic): upload your SVG to the SVG Cleanup tool. The tool applies path simplification and anchor point reduction automatically. This is the fastest way to smooth paths from a vectorizer trace.
Method 2 — Inkscape Path Simplify: open the SVG in Inkscape. Select the paths with rough edges and go to Path > Simplify (Ctrl+L). Inkscape reduces anchor point count and smooths Bezier handles. Apply multiple times for progressively smoother curves.
Method 3 — Manual Bezier editing in Inkscape: select the path and activate the Node Tool (N). Select jagged anchor points and convert them from Corner nodes to Smooth nodes (click the Smooth node button in the toolbar). Drag Bezier handles to reshape curves. Delete unnecessary anchor points by selecting them and pressing Delete.
Method 4 — Illustrator Smooth tool: in Adobe Illustrator, select the path and use the Smooth tool (under the Pencil tool). Drag over rough segments to automatically smooth them. Use Object > Path > Simplify to reduce anchor count after smoothing.
For logos specifically, target smooth closed paths with anchor points at natural curve inflection points only. Aim for the minimum number of anchors that accurately represent the design shape.