Color String Art Portrait Generator •

Upload Image

Preset

Basic Parameters

Number of threads? 10000Thread opacity? 0.020Target contrast? 0.55Density penalty? 0.120

Black Thread

Black bias? 0.80Black thread strength? 0.40Black line visibility? 0.080K-factor? 0.75

Color Threads

Color thread strength? 1.00Color line visibility? 0.100

Source

Square cropping used for current preview.

String Art Preview

Color result for circular pattern on 250 pins.

Instruction

1. Upload a Portrait

Use a clear, front-facing image where the face fills most of the circular preview. Small faces, heavy shadows, and low-resolution photos produce weaker thread patterns because the generator has fewer usable details to convert into lines.

2. Tune the Pattern

Start with the Classic preset. Use Vibrant only when the image needs stronger color. If the preview is too pale, increase Number of threads or Target contrast. If it becomes too dark or crowded, reduce Thread opacity, Color line visibility, or Black thread strength.

After changing any slider, click Generate Color Pattern again. The preview and thread length estimates are recalculated from the current settings.

3. Check Thread Lengths

Thread Mix shows the estimated total length and the approximate amount of Cyan, Magenta, Yellow, and Black thread needed for the generated portrait. These values are calculated for a 46 cm working diameter and 250 pins.

4. Download the Instructions

Download PDF saves the ordered winding route. Each row tells you the color and the next pin connection, for example Cyan: 12 -> 184. Download Video creates a short build animation of the same pattern.

5. Prepare the Frame

Use exactly 250 pins on a 46 cm circle. Pin 0 is at the top, in the 12 o'clock position, and pin numbers increase clockwise. A different pin count or diameter will not match the generated PDF route.

Print the A4 tiled template at Actual Size / 100%. It contains a 50 x 50 cm working sheet with a centered 46 cm circle, 250 evenly spaced pin marks, labels on every tenth pin, and stronger marks on every fifth pin.

Open A4 tiled frame template PDF

6. Follow the Route

Attach the first thread color to the indicated pin and follow the PDF line by line. When the color changes, tie off the current thread and start the next color from the specified pin. Keep thread tension consistent throughout the build.