Write multiple-choice questions, mark the key, then run the quiz shuffled and score it with a review list of every miss.
Read a passage against a timer and get words per minute, character counts and a reading-speed band, or enter a result you timed yourself.
A 50-item bucket list in eight categories. Tick items, watch the percentage move, and keep it across reloads.
Twelve working mock interfaces that demonstrate real manipulative design patterns, each with its ethical counterpoint.
Join several PDFs in your chosen order, download one file.
Split every N pages or by custom ranges, download each part.
Delete, rotate and reorder pages, then download the result.
Re-save with object streams and show before/after file size.
