Free crossword maker lets teachers build classroom puzzles in about a minute

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A developer created CrosswordLabs, a free online tool that turns a list of words and clues into a printable crossword. Users paste vocabulary, spelling, or review questions, and the generator automatically places the words, numbers the entries, and lays out Across and Down clues. Puzzles can be printed on one page or shared by link, and an answer key is available with one click. The app is built with Next.js and PostgreSQL, and its grid generator uses a backtracking placement algorithm that scores candidate placements for compactness and intersections. The creator reports that scoring placements mattered more than added randomness, and that a minimal input form suited users best; no account is needed to try it.

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ProgrammingDEV Community ·

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