Pick the path by what the file is for.

Step 1: identify your output target

The conversion approach depends entirely on what the resulting vector file is going to be used for. Skipping this step and just running an auto-tracer is the #1 cause of files that look fine on screen but break in production.

Web display, social, app icon

Auto-trace is fine. Quality matters less than file size and round-trip speed.

Print at multiple sizes (logos, business cards, posters)

AI vectoriser or auto-trace + cleanup. Output needs to be edge-clean at any size.

Vinyl plotter

Manual rebuild. Auto-traced paths usually have open contours or sub-pixel jitter that the plotter chokes on.

Embroidery digitizing

Manual rebuild. The digitizer needs stitch-friendly geometry, not just any valid vector.

Screen-print spot colour

Manual rebuild + colour separation. Each ink needs its own clean layer.

CNC routing, laser, plasma

Manual rebuild. Closed-path DXF in AutoCAD 2000 dialect.

Engraving (rotary, fiber)

Manual rebuild. Single-stroke fonts for rotary, outline-only for fiber.

Step 2: inspect your source

• Resolution. At least 2000×2000 for AI tools. 1200×1200 is the practical minimum for auto-trace.
• Contrast. High-contrast (black logo on white) traces cleanly. Low-contrast or noisy source produces messy output.
• Colour count. 1–4 colours: spot-colour-friendly. 5+ colours: prefer simulated-process or AI vectorisation.
• Fine type. Small text at low resolution traces poorly — consider re-typesetting in the original font.
• Subject. Logo / icon / illustration → vector wins. Photograph → vector struggles; consider whether you actually need vector.

Step 3: pick the conversion tool

Step 4a: auto-trace workflow (Illustrator)

Step 4b: AI vectoriser workflow (Vectorizer.AI as example)

Step 4c: manual rebuild (the production path)

For production-buyer output — vinyl, embroidery, screen print, CNC, engraving — manual rebuild is the right answer. A designer redraws the artwork on top of the raster reference using the Pen tool, producing clean closed paths with the minimum anchor points needed to describe each shape.

Time: 30–60 min for Simple (single-color clean logo); 1–2 hr for Medium (multi-color, some interpretation); 2–4 hr for High (gradients, halftones, complex composition); 4+ hr for Complex (photo-derived full reconstruction). Production-buyer shops typically outsource to a specialist (VectorWiz, in-house freelancer, or a designer subcontractor).

Step 5: cleanup checklist

• Closed paths — every shape’s start and end points should connect, especially for cut-line work.
• Minimum anchor points — Object → Path → Simplify with a tight tolerance.
• Outlined type — Type → Create Outlines so the file renders correctly even without the source font installed.
• Layer structure — one layer per output stage (per ink colour for screen print, per cut depth for CNC, per fabrication step for signage).
• Named swatches — Pantone codes or named colours so the press operator picks the right inks without guessing.
• No embedded raster — make sure the trace went all the way; an embedded raster image inside the file defeats the purpose.
• Stroke vs fill — production tools care which is which. Stroke = cut path or engrave line; fill = solid colour region.

Common mistakes

• Trusting auto-trace output for production. The cleanup step is mandatory, not optional.
• Skipping font outlining. The vector ships without the source font; the customer’s machine reverts to fallback fonts and the file looks wrong.
• Mixing stroke and fill on the same path. Production tools handle strokes (cut paths) and fills (regions) differently — picking the wrong one breaks the workflow.
• Using PNG/JPG output of a vector trace as if it were still vector. Once you export to a pixel format, the vector is lost; keep the AI/SVG source.
• Not zooming to actual output size to check edges. Vectors look fine at any zoom; bugs only show up at the actual output resolution.
• Ignoring the layer structure. A multi-color file with everything on one layer is hard to separate downstream; one layer per ink colour saves the press operator an hour.