Maze Generator

Features

• Recursive backtracking: the maze is always solvable and the solution unique (no loops, no unreachable areas)
• Adjustable columns, rows and cell size (from 4×4 up to 80×80)
• Seeded randomness: the same parameters always produce the same maze, reproducibly
• Entrance top-left, exit bottom-right, with both walls opened
• Optional solution path in an adjustable colour
• Wall and background colours adjustable (light walls on a dark ground work too)
• Exports SVG: vector, so it prints sharply at any size and drops into a design file
• Shared walls are drawn once, so no line comes out thicker than its neighbours

How to use

1. Adjust the columns, rows and cell size, watching the preview
2. Change the seed for a different maze; note the seed down to reproduce one
3. Tick “Draw the solution path” when you want the answer
4. Click Download .svg to take the vector file

FAQ

Is every generated maze solvable?

Always, and the solution is unique. Recursive backtracking builds a spanning tree: opening a wall adds an edge, and the finished maze has exactly n−1 edges connecting n cells. That structure guarantees two things — a path exists between any two cells (so the entrance always reaches the exit), and there are no loops (so there is only one such path). The “fill everything then knock walls down at random” approach cannot promise either, and can leave regions you simply cannot reach, while still looking perfectly normal on screen.

What is the seed for?

Reproduction. Generation rolls many dice, and with true randomness asking for the same parameters again gives a different maze. A seeded generator fixes which roll comes out when, so same size plus same seed equals exactly the same maze. That matters in practice: a child who wants the same maze again, or a wish to make it harder while keeping the same character — just write the seed down. Cryptographic strength is unnecessary; this is a picture, not a key.

Can I print it directly?

Yes. The downloaded SVG is vector, so it stays sharp when enlarged — which is exactly why SVG rather than PNG: the same 20×14 maze as a PNG shows stair-stepping when scaled to A4, while vector lines stay clean. If the printed lines look thin, increasing the cell size helps more than thickening the lines, because the line width is derived from the cell size.