A reading companion · v1
Solve the essay
you’re reading.
Marginalia turns essays you find online into crosswords whose clues cite the source passages. Solving the puzzle becomes a way of reading — slow, attentive, back and forth between text and grid.
01 · Drop
Paste any essay URL. We’ll fetch and clean the text.
02 · Preview
Review the concepts the system extracted. Anchor the must-haves.
03 · Solve
Read on the left, solve on the right. Clues link to source passages.
Marginalia v1 · powered by Claude Sonnet 4.5 · bring your own key in Account