Paperfill — AI worksheet filler

Drop in any fill-in-the-blank worksheet as a PDF. We find every blank, every question, every box — then fill them with answers that fit, without ever overlapping your original text.

Instructions — optional

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Drop a PDF here

or click to browse · max 10 MB

Parse the structure

We map every underscore run, every question, every table cell to a precise bounding box.

ii.

Ask the AI to fill it

The AI only sees the question — never the coordinates. So nothing lands in the wrong place.

iii.

Render the result

Answers drop into their detected slots with auto-fit font sizing. Download the filled PDF.

Click any text to edit. Drag the black handle to move a box, the red × to delete. Click + Add box, then drag on the page to draw a new field.