# Tracing photos into clean outlines with the Photo to Connected Outline Generator

> closed silhouette paths traced from any photo

Where the halftone tool rebuilds tone, this tool extracts shape: it thresholds your photo into light and dark, then traces the boundaries as smooth, closed vector outlines. The result is minimalist line art, a pet's silhouette, a face in three contours, a building's profile, that scores in seconds because the laser only draws the lines.

Closed paths are the superpower here: unlike open sketch traces, every region is a complete loop, so the same file can be scored as line art, cut as a silhouette, or extruded into a layered relief print. All processing is local; your photo never uploads.

## What you need

- **Laser:** laser cutter, 3 mm [laser-grade plywood](https://yxecreations.com/collections/laser-grade-plywood), [acrylic](https://yxecreations.com/pages/acrylic-sheets), or [leatherette](https://yxecreations.com/pages/leatherette) for scored patches
- **3D printing:** any FDM printer, one or two filament colors

## Step 1 - Upload a photo



Open the tool and upload an image with a clear subject; profile shots, pets against plain walls, and architectural photos trace beautifully. Use **Gamma**, **Brightness**, and **Contrast** to separate subject from background before tuning the trace.

## Step 2 - Tune the trace



- **Threshold** decides what counts as dark; sweep it slowly and watch the silhouette form. This one slider does most of the work.
- **Pre-blur** fuses freckle-level noise into bigger shapes; raise it when the trace looks shattered.
- **Path Simplification** smooths jittery edges into confident curves; a little goes a long way on faces.
- **Min Region Size** drops islands smaller than a few millimetres that would clutter the art.
- **Invert** swaps which side of the threshold becomes the outline; **Add cut frame** appends a border for cutting the panel out.
- **Width** sets the physical size with the **Units** toggle.

## Step 3 - Export



Download the **SVG** for the laser, or set **Base Thickness** and **Relief Height** and export an **STL**/**3MF** where the traced regions stand proud of a base plate.

## Laser Engraving & Cutting

### Scoring or cutting the outlines



1. Import the SVG and assign the outlines to vector score for line art; an entire portrait scores in under a minute.
2. Alternatively raster-fill the closed regions for a solid two-tone stamp of the subject.
3. For a cut silhouette, pick the dominant outline and cut it through 3 mm plywood or acrylic.
4. On leatherette, a light score makes crisp tattoo-style patch art.
5. Cut the frame border last if you enabled it.

## 3D Printing

### Printing a relief plaque



1. Set **Base Thickness** around 2 to 3 mm and **Relief Height** 1 to 2 mm, then export the 3MF.
2. Print base-down; the raised regions form a clean two-level relief.
3. Swap filament color at the relief boundary layer for a crisp two-tone image.
4. Raise Path Simplification slightly for printing; ultra-fine wiggles vanish below nozzle width anyway.
5. A 0.2 mm nozzle upgrade pays off on small, detailed reliefs.

## Make it yours

- Pet silhouette cut from black acrylic for a minimalist memorial.
- Score a child's profile from a side photo, the modern take on Victorian silhouettes.
- Trace the family home and score it onto a housewarming plaque.
- Couple's silhouette from an engagement photo as a save-the-date master.
- Print a relief version as a touchable keepsake.
- Layer two thresholds of the same photo, cut from two wood tones, for depth.
- Score a motorcycle or car outline onto a garage sign.
- Run the outline as an engraving layer on a keychain or ornament from another tool.

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Open the Photo to Connected Outline Generator: https://www.mylasertools.com/photo-line-art-generator
Read online: https://www.mylasertools.com/learn/guides/photo-line-art-generator