How to Fix Jagged Edges in Vector
Jagged or staircase edges in a vector file come from tracing low-resolution or noisy images. Fix them by smoothing the path curves in Illustrator or Inkscape, or by pre-processing the source image before re-vectorizing.
About Fix jagged edges in vector
Jagged edges in a vector file appear as straight angular segments along curves where smooth curves are expected — like stairsteps around a circular logo or text outline. They typically come from tracing low-resolution source images where the pixel grid becomes visible in the traced paths.
Fix method 1 — Smooth paths in Illustrator: 1. Select the path with jagged edges. 2. Switch to the Smooth tool (grouped with the Pencil tool). 3. Drag along the jagged edge. Illustrator smooths the curve while keeping the general shape. 4. Alternatively: select all anchor points, then use Object > Path > Simplify with Curve Precision at 85%. This removes the excess anchor points causing the staircase.
Fix method 2 — Re-vectorize from a higher-resolution source: Jagged edges are most effectively fixed by going back to the source. Upscale the raster image using an AI upscaler (like the Logo Upscaler) before re-vectorizing. A 2x–4x upscale gives the vectorizer more pixel data to trace smooth curves from.
Fix method 3 — Blur before re-vectorizing: Apply a 1px Gaussian blur to the source image in Photoshop or GIMP. The blur softens the pixel staircase so the vectorizer traces a smoother curve through the averaged pixels. Then increase contrast before saving and re-uploading.
Fix method 4 — Manual node editing in Inkscape: Use the Node tool (N). Select anchor points creating the staircase. Delete excess nodes. Drag the bezier handles to create a smooth curve where the staircase was.