About Toolwoven Coloring
huepad makes printable coloring pages two ways: it turns your own photo into black line art, or it draws a mandala or geometric pattern from a design number.
How it works
Photo pages are made by an edge-finding filter that runs in your browser: it smooths the photo, finds where brightness changes sharply, removes small specks and thickens the lines. There is no AI service and no upload. Pattern pages are drawn from fixed geometric rules; the same style, settings and design number always give the same page.
Pages are 300 DPI on A4 or US Letter, portrait or landscape, with an optional border and caption. You can print directly or download a PDF or PNG.
Your last settings (not your photo) are kept in this browser's local storage so they are still there next time; clearing this site's browser data removes them.
Who makes it
Toolwoven Coloring is part of Toolwoven, a small independent collection of free browser tools. Each tool focuses on one practical task and can be used without signing up.
Read the privacy notice for details on storage and hosting.
Last updated: 19 October 2026