Connect the Dots Maker: Free Printable Dot to Dot

Our free connect the dots maker turns a picture into a printable dot to dot worksheet. Upload a silhouette, a logo, clip art, or a simple outline drawing, choose between 10 and 150 dots, and get a numbered sheet plus a solution page on US Letter or A4. Before you print, the tool checks the sheet for numbers that are hard to read and dots that are easy to mix up. It runs in your browser, needs no account, adds no watermark, and never uploads your picture.

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Table of Contents

How to Make Your Own Connect the Dots Worksheet

It takes about a minute:

Add a picture. Click “Upload photo”, drag a file onto the preview, or paste an image with Ctrl+V (Cmd+V on a Mac). Image links work too, if the website hosting the picture allows it. Phones and tablets also get a “Take photo” button.
Choose the number of dots. Move the slider anywhere from 10 to 150. The tool places the dots along the outline of your shape and numbers them in order.
Read the sheet check. A green box means every number sits next to its own dot and no two dots are easy to confuse. An orange box lists what could trip up the person solving the puzzle and, where it can, offers a dot count that works better.
Check the preview. Switch between “Sheet”, “Solution”, and “Compare”. Compare slides between your picture and the dots.
Print or download. “Print / Save as PDF” creates two pages: the dot sheet and the solution. You can also save both pages as PNG images.

To try the tool before using your own picture, click one of the sample shapes: a rabbit, a cat, a dolphin, or a turtle. Each sample sets a dot count that suits the shape. All four images are in the public domain or released under CC0 and load from Wikimedia Commons.

What Each Setting Does

Number of dots (10 to 150, default 30): how many numbered dots trace the outline.
Shape detection (1 to 9, default 5): how different a pixel must be from the background to count as part of the shape. Raise it if parts of a pale shape go missing, lower it if shadows or paper texture are taken as part of the shape.
Start at and Direction: dot 1 sits at the top, right, bottom, or left of the shape, and the numbers run clockwise or counterclockwise.
Number size: Small, Medium, Large, or Auto. Auto prints large numbers on sheets with up to 25 dots and makes them smaller step by step as the dot count grows, so they still fit between the dots.
Dot size: Small, Medium, Large, or Auto (bigger dots for fewer dots).
Keep inner lines: keeps details inside the outline, such as an eye, a wing, or a fin, so the finished picture looks complete and can be colored in afterward.
Mark the start with a star: draws a small star around dot 1, so children know where to begin.
Paper and Title: US Letter is the default, A4 is available. The title appears at the top of both pages. Leave it empty and the sheet says “Connect the Dots”.
Add a name line: adds a “Name:” line under the title, which is handy for classrooms.

“Reset settings” brings back the starting values. The zoom buttons enlarge the preview up to 400 percent. On small screens, the preview shows the numbers larger than they will print so you can read them; downloads and printouts use the size you chose.

The Sheet Check: Why It Matters

A dot to dot sheet fails when a child cannot tell which number belongs to which dot, or when two dots far apart in the sequence sit side by side. The tool tests every sheet for:

Easy mix-ups. Two dots that are not next in line but lie closer together than 70 percent of the typical distance between dots. This happens on both sides of narrow parts such as legs.
Unclear numbers. A number that sits almost as close to another dot as to its own.
Overlaps. Numbers that touch each other, numbers without a free spot, and dots that almost touch.
Dots on inner lines, which are hard to see.
Shape accuracy. If the outline strays more than 4.5 percent of the shape’s diagonal from the path of the dots, the shape will be hard to recognize.
Background problems. If the shape runs into the edge of the picture, part of the background was probably taken as the shape.

When something is wrong, the check tries other dot counts (fewer dots first, or more dots when the shape needs them) and offers the nearest one that passes as a button. If none passes, try a smaller number size, switch off the inner lines, or use a simpler picture.

How the Connect the Dots Generator Works

All steps run inside your browser, in small pieces with a progress bar:

Scaling. Your picture is scaled to a working size of 900 pixels on the longest side (760 pixels on phones and tablets). Small pictures are enlarged to at least 500 pixels.
Finding the shape. The typical color along the edge of the picture counts as background, and every pixel that differs clearly from it counts as shape. The cutoff comes from Otsu’s method, a standard way to split pixels into two groups, shifted by the Shape detection slider.
Filling the silhouette. Starting from the edge of the picture, the background is flooded until it hits the shape. Everything it cannot reach belongs to the shape, including the inside of a closed outline drawing. Small gaps in an outline are closed first; if the result is only a thin ring, larger gaps are closed.
Tracing the outline. The outer edge of the largest shape is followed pixel by pixel. For outline drawings, the dots go on the middle of the drawn line, not on its outer edge.
Placing the dots. The Douglas-Peucker algorithm finds the corners of the outline, and they get dots first, because corners carry the form. The remaining dots fill the longest gaps. Dots that come too close to a dot further along the sequence slide along the outline, by at most a third of the usual spacing.
Numbering. The dots are numbered clockwise or counterclockwise from the side you chose. Each number is placed outside the shape, next to its dot. If that spot is taken, other angles and distances are tried until the number is free and clearly closer to its own dot than to any other.
Checking and drawing. The sheet check runs, and the pages are drawn at 200 dots per inch: 1,700 × 2,200 pixels for US Letter and 1,654 × 2,338 pixels for A4. Shapes that are much wider than tall get a landscape page.

Which Pictures Work Best

A dot to dot puzzle shows one outline, so the best pictures have one clear subject. Silhouettes and clip art on a white or transparent background work best: animals in side view, vehicles, fruit, and simple objects. Outline drawings work too, including your own. Draw with a thick, dark pen and keep the outer line closed.

Photos work when the subject stands in front of a plain wall or sky and does not touch the edges of the picture. Busy backgrounds such as grass or a room confuse the shape detection. Thin parts, such as long legs or a kite string, are hard for any dot to dot, because the dots on both sides sit close together.

If you want to sharpen a shape first, our guide to contour lines in art explains how artists use outlines, and the article on shape in art covers why a simple, closed form reads so clearly.

How Many Dots for Each Age?

There is no fixed rule, but these ranges are a sensible starting point. Children who are just learning their numbers do well with 10 to 20 dots. Preschool and kindergarten children who count confidently can try 20 to 40. School-age children can handle 40 to 80, and older children and adults enjoy 80 to 150, where the picture only appears near the end.

For young children, also set the number size to Large. For older solvers, a smaller number size leaves room for more dots.

Ideas for Using Your Dot to Dot Sheets

Art lessons: Turn a simple motif into a warm-up exercise, then let students add details and shading. Our easy drawing ideas are full of shapes that work well.
Drawing practice: Connecting a shape helps beginners see its proportions before drawing it freehand, for example with our tutorials on how to draw a cat, how to draw a bunny, or how to draw a turtle.
Classrooms and homeschooling: Dot to dot puzzles let children practice counting and number order while they work on pencil control. Add the name line and print a stack for the class.
Coloring afterward: With inner lines switched on, the finished sheet becomes a coloring page. For more, see our bunny coloring pages and dolphin coloring pages.

If you would rather print ready-made puzzles, browse our collection of dot to dot printables. And if you like art made from dots, the painters in our article on pointillism artists built whole pictures from tiny points of color.

Privacy

Your picture never leaves your device. All the work, from finding the shape to drawing the pages, happens in your browser. Nothing is uploaded or stored. Only the four sample shapes load from Wikimedia Commons.

More Free Art Tools

All our tools are free, run in your browser, and need no account. See them all on the free art tools page.

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Art grid tool: put a drawing grid over any photo.
Golden ratio overlay: check your composition with a golden spiral and rule of thirds.
Perspective grid generator: print one-, two-, and three-point perspective grids.
Paint by number generator: turn a photo into a printable paint by number template.
Mandala maker: draw symmetrical mandalas and print them as coloring pages.
Picture frame and mat size calculator: work out mat openings and frame sizes for your art.
Image color picker: find the exact colors in any photo or painting.
Color name finder: get the name of any HEX, RGB, or photo color.
Color wheel: find complementary, triadic, and analogous colors.
Color mixer: mix paint or screen colors and find paint recipes.
Color palette generator: create matching color schemes or a palette from an image.
Color blindness simulator: see images and palettes as color blind people do.
Art pricing calculator: find a fair price for your paintings and prints.
Art prompt generator: get random ideas for drawing and painting.
Random character generator: create an original character with traits and a palette.

Frequently Asked Questions

How Do You Make a Connect the Dots Picture?

Upload a picture with one clear shape to the connect the dots maker above and choose the number of dots. When the sheet check is green, click “Print / Save as PDF” or download the sheet as a PNG image.

Is This Connect the Dots Maker Free?

Yes. Create as many sheets as you like without an account. The pages have no watermark, and there are no paid upgrades.

Can I Turn My Own Photo Into a Dot to Dot?

Yes, as long as the subject stands out clearly from a plain background. A pet photographed against a light wall works, a pet on a patterned sofa usually does not. If the result looks wrong, crop the photo, adjust Shape detection, or trace the subject with a thick pen and upload the drawing.

How Many Dots Should a Connect the Dots Have?

Children who are just learning their numbers do well with 10 to 20 dots, confident counters with 20 to 40, school-age children with 40 to 80, and older children and adults with 80 or more. The sheet check also tells you when a shape needs more dots.

Can I Save My Dot to Dot as a PDF?

Yes. Click “Print / Save as PDF” and choose “Save as PDF” (or “Microsoft Print to PDF”) as the printer in the print dialog. The PDF has the dot sheet on page 1 and the solution on page 2.

Is Dot to Dot the Same as Connect the Dots?

Yes. “Dot to dot”, “connect the dots”, and “join the dots” all describe the same kind of puzzle: numbered dots that reveal a picture when you draw lines between them in order.