A visual editor that handles symmetry, numbering and the boring bookkeeping — so you can spend the afternoon on the fill and the wordplay.
Create a free account to solve unlimited puzzles, save your progress across devices, and track your stats.
Everything you need to take a puzzle from idea to inbox — and everything a solver needs to keep coming back.
Click to drop a block, type to fill a letter. Rotational symmetry mirrors your blocks automatically so the grid always looks the part.
Solve any puzzle in the catalog and your progress saves automatically — across devices, between tabs, no logins lost.
Already constructing? Import .ipuz files from your favorite tool and keep working. Export anytime — your puzzles stay yours.
See how other constructors clued the same answer. The clue library turns the community's collective wit into your inspiration.
Go beyond the classic 15x15. Build minis, themelesses, diamonds, irregular shapes — with full void-cell support for the wild ideas.
When the grid is solid and the clues sing, ship it. Your puzzle goes live for solvers around the world to find and finish.
Two open libraries for constructors and solvers alike. Search them anytime, sign-in optional.
Stuck on a fill? Search hundreds of thousands of crossword answers by length and pattern — C?T or S*E — with clue counts and fill scores for each entry.
See how constructors have clued any answer. Search a community library of crossword clues for inspiration, or add your own to help the next puzzle-maker.
Browse the libraryPick a size, place blocks, and fill in answers with the visual editor. Symmetry happens automatically.
Sharpen each clue. Browse the community library when you need a spark of inspiration.
Hit publish and your puzzle is live. Then unwind with crosswords from constructors around the world.
No. The visual editor handles symmetry, numbering, and the boring bookkeeping. If you can spell, you can build a mini in an afternoon.
Yes. Building, publishing, and solving are free with no credit card required. An optional Pro plan adds AI-assisted grid filling and clue suggestions for constructors who want a head start.
Yes. Import standard .ipuz files from any tool that exports them and keep working. Export back out anytime.
Anything from 4x4 minis up through Sunday-sized 21x21 grids. Diamonds, asymmetric layouts, and void cells are all first-class citizens.
Crossword Builder is a place to build as well as solve, with puzzles from independent constructors you won’t find on big-paper sites. Think of it as the indie venue for crossword craft.
Join Crossword Builder and start crafting or solving today.