How to Make a Stencil SVG from an Image

A stencil looks simple — a shape cut out of a sheet so paint lands only where you want it. The catch is that every enclosed hole has to stay attached to the surrounding material, or it drops out and ruins the design. Getting there starts with a clean vector outline, then a few deliberate edits. Here's the whole process.

What makes a stencil different from a normal cut file?

A regular cut file just needs accurate outlines. A stencil needs those outlines plus a guarantee that the sheet stays in one connected piece. Any shape with an enclosed interior — the hole in an O, the triangle inside an A, a donut ring — creates an island: material that is completely surrounded by a cut and has nothing holding it in place.

The fix is a bridge (also called a tie): a small gap left uncut that links the island to the rest of the stencil. Bridges are what separate a stencil from an ordinary silhouette, and no vectorizer adds them for you — they're a design decision about where a tiny break in the line is acceptable.

Stencil SVG vs. a plain cut SVG

	Plain cut SVG	Stencil SVG
Paths connected	Not required	Required — one connected sheet
Interior islands	Allowed (they're separate pieces)	Must be bridged
Thin details	Fine	Risk tearing or lifting
Typical use	Cricut layers, vinyl decals	Spray paint, airbrush, etching
Extra step after tracing	None, from a transparent source	Add bridges

How do I make a stencil SVG from an image?

The reliable path is vectorize first, then bridge:

1. Vectorize the image. Go to swiss-vector-svg.com and drop in your PNG or JPG — ideally a PNG with a transparent background. It traces the art into vector shapes in a few seconds, with a watermarked before/after preview side by side — previewing is free and needs no account.
2. Simplify the art. Stencils cut best from high-contrast, flat artwork. If the trace looks busy, raise the Detail slider to drop tiny stray shapes and lower the Colors slider to merge similar shades into fewer regions, then re-trace. One or two solid colours is ideal for a single-layer stencil.
3. Download the clean SVG. Spend one credit to download the vector file with no watermark. This is your base outline. With a transparent-background source, the counters (the middle of an O, A, or e) are already real holes in the letter shapes. With an opaque source, they come out as separate shapes stacked on top of the letters, over a full-size background shape: delete the background, then subtract the inner shapes from the letters beneath (Inkscape: Path → Difference; Illustrator: Pathfinder → Minus Front) before you bridge. Our guide to cleaning up a traced SVG covers the rest of the tidy-up.
4. Add bridges. Open the SVG in Inkscape (free), Illustrator, or your cutter's software. For each enclosed island, draw a small rectangle across the cut line and subtract it, leaving a 1.5–3 mm uncut tie. Letters O, A, B, D, P, Q, R, e, a, o, and the dots on i and j are the usual suspects.
5. Check for stranded islands. Before cutting, scan the whole design for any hole that still floats free. A quick test: imagine lifting the sheet — nothing should fall out.

For the raw conversion step, the PNG to SVG converter takes PNG, JPG, WebP, and BMP files, and the SVG for Cricut page covers machine import if you're cutting on a Cricut.

How wide should stencil bridges be?

Bridge width depends on the material and how fine the detail is. As a rule of thumb:

• Vinyl and card stock: 1.5–2 mm bridges hold well and stay subtle.
• Mylar and plastic sheet: 2–3 mm, since the material flexes and thin ties can tear.
• Fine lettering: keep bridges narrow but add more of them — two small ties hold an island better than one wide gap that reads as a visible break.

Place bridges where they'll be least noticeable — along the axis of a stroke rather than across a curve — and add them symmetrically so the final paint job looks intentional.

What images make the cleanest stencils?

The same art that vectorizes cleanly also stencils cleanly:

• Bold lettering and logos — thick strokes survive bridging without looking broken.
• Flat, two-tone illustrations — clear figure-and-ground maps straight to cut-and-keep regions.
• High-resolution sources — sharp edges trace to tight paths, so you spend your time on bridges, not cleanup.

Photographs and soft gradients are a poor fit: they have no flat regions, so the trace produces thousands of tiny paths and far too many islands to bridge. If that's your starting point, simplify or threshold the image to black-and-white first.

That's the full workflow: vectorize the image into a clean SVG, simplify it to flat regions, then add bridges so every island stays put. Do the conversion in a minute, spend a few more on the ties, and you have a stencil that cuts and sprays exactly as drawn.