UD5 Toolkit
Paint Color Visualizer – Online Test Wall Colors on Sample Rooms
Simulate paint colors on a pre-loaded room photo by adjusting hue, saturation. Find your perfect shade before buying. Local canvas.
Color by Number Generator - Online from Photo to Paint-by-Numbers
Upload Photo
Click or Drag & Drop
JPG, PNG, WEBP (max 10MB)
Upload an image to preview
Frequently Asked Questions
A Color by Number generator transforms any photo into a paint-by-numbers template. It segments the image into numbered regions, each assigned a specific color. You simply match the paint color to the numbers on the canvas to recreate the picture.
Upload your photo, adjust the number of colors and grid size, then click “Generate”. The tool creates a stylized block version with numbered cells and a matching palette. Download the result and print it on canvas or paper to start painting.
Photos with clear subjects and good contrast produce the best results. Avoid overly detailed or blurry images. Portraits, landscapes, and pet photos are excellent choices. High-resolution images give sharper base data, but the tool automatically scales for faster processing.
More colors (12-24) capture subtle gradients and look more realistic, but require more paints and patience. Fewer colors (4-8) give a bold, poster-like effect and are easier to complete. Start with 8-12 for a balanced experience.
Grid size controls the block dimensions. Smaller grids (e.g., 10px) create many tiny cells with finer detail, while larger grids (40-60px) produce larger, easier-to-paint blocks. Adjust based on your canvas size and desired level of detail.
Yes! Download the image with numbers and print it on canvas, thick paper, or adhesive sheets. The palette helps you identify which acrylic or oil colors to use. For best painting results, print on matte canvas and use light priming.
Image to Color Squares - Online Abstract Block Art
Reduce an image to large colored squares. Create bold, minimalist wall art. Adjust block size. Download PNG.
Photo to Oil Painting Effect - Online Canvas Filter
Apply a realistic oil painting texture to your photo. Adjust brush size and roughness. Brush stroke simulation.
Pigment Mixing Simulator - Online Color Blending Tool
Mix two or more colors using subtractive (CMYK‑like) blending. See what happens when you combine real paints. Brush effect canvas.
Pixel Art Coloring Book – Online Click to Fill Grid Cells
Choose a pre-drawn pixel outline and fill cells with colors. Save your masterpiece. Meditative fun.
Image to Cross Stitch Pattern - Online Convert Photo to Grid
Upload a photo and convert it to a pixelated cross-stitch pattern with DMC floss color matching. Adjust size and color count. Local processing.
Photo to Charcoal Drawing - Online Art Filter
Turn your photo into a black‑and‑white charcoal or chalk drawing. Adjust texture and contrast. Artistic.
Random Sketch Idea - Online Drawing Prompt Generator
Click for a random drawing or sketching idea. Characters, objects, scenes. Beat artist's block. All local.
Photo to Pencil Sketch - Online Realistic Effect
Turn any photo into a greyscale pencil sketch. Adjust detail level and darkness. Download your artwork. Local canvas filter.
Grid Drawing Tool - Online Overlay on Photo for Copying
Overlay a grid on any image to help you draw it freehand. Adjust grid size and line thickness. Useful for artists.
Color Inversion Calculator - Online Exact Opposite Hue
Get the exact RGB inversion (negative) of any color. Useful for dark mode theming and high‑contrast accessibility checks.
3D RGB Color Cube - Online Interactive Space
Explore the RGB color space as a rotatable 3D cube. Pick a color directly from the volume. Drag to rotate. Canvas 3D.
Perspective Grid Generator - Online Drawing Reference
Create 1-point, 2-point, or 3-point perspective grids. Adjust vanishing points and grid spacing. Useful for artists and architects.
Image to Embroidery Pattern - Online Cross‑Stitch Chart
Convert a photo into a color‑reduced embroidery or cross‑stitch pattern with DMC thread colors. Adjust size and palette. Print chart.
Color to Emotion Visualizer - Online Interactive Wheel
Click colors on an interactive wheel and see the common emotions and meanings associated with them. A design resource.
Color to Emotion Reference - Online Psychology Quick Guide
Click any color to see common emotional associations and cultural meanings. Quick design reference.
3D Color Space Viewer - Online Explore RGB Cube
Rotate and explore the RGB color space as a 3D cube. Pick colors directly from the volume. Interactive Three.js.
Quilt Pattern Previewer - Online Fabric Layout Visualizer
Arrange virtual fabric squares or triangles on a grid to preview a quilt pattern. Change colors and sizes. Export layout.
Text to ASCII Drawing - Online Simple Diagrams
Create simple ASCII diagrams (arrows, boxes, trees) using a visual editor. Copy the plain text art. For comments and docs.
Houdini Paint Perspective Cube - Online CSS Art
A paint worklet that draws a moving 3D cube. See Houdini in action and copy the JS file. Modern CSS magic.
WebGL Fluid Simulation - Online Interactive Ink Drop
Move your mouse to create colorful ink swirls in a simulated fluid. Beautiful and mesmerizing. No install. Just WebGL.
CSS Grid Layout Generator - Online Visual Grid Builder
Build CSS Grid layouts by defining columns, rows, and gaps visually. Get the complete grid CSS code. An essential web design tool running in the browser.
Mat Border Proportion Calculator – Online Golden Ratio & Standard
Enter frame and art size to get equal or weighted mat borders. See a golden ratio option for an artistic touch.
Calligraphy Practice Paper Generator - Online Slant Guide Sheet
Generate and print custom calligraphy practice sheets with adjustable x-height, slant angle, and base line. Perfect for copperplate or Spencerian.
Number Guessing Game - Online Guess the Secret Number
Guess a random number between 1 and 1000 with feedback 'higher or lower'. Track attempts, beat the high score. Classic beginner's game.
Visual Garden Bed Grid Planner – Online Drag & Drop Plants
Draw a raised bed and drag plant icons to arrange them. See spacing requirements. Print layout.
Escape Room Puzzle Generator – Online DIY Game Ideas
Generates simple puzzle ideas (cipher, hidden messages) that can be printed for home escape rooms.
HTML Table Generator - Online Visual Spreadsheet to Code
Create HTML tables visually by adjusting rows and columns. Add data, style, and copy the generated markup. Perfect for quick table prototyping.
Fractal Tree Drawer - Online Recursive Art & Chaos Game
Generate a beautiful fractal tree with adjustable depth, angle, and color. Watch it draw branch by branch. Relaxing and educational.
Knitting Gauge Calculator – Online Swatch to Stitches
Enter swatch dimensions and stitches to get gauge. Then calculate cast-on for desired finished size.