Pick a PDF of lecture notes. It finds the headings on every page, lets you check them, and saves a copy with each title marked.
Your file stays on this phone. Nothing is uploaded.
Works best on PDFs with selectable text. Scanned or screenshot pages are checked for coloured title boxes instead.
Starting
Tap one to load it into the brush.
Every title you tap gets this style. Change it any time: titles you already painted keep theirs.
With no title style and no look, painted titles stay as they are in the saved file.
Tap a line to mark it. Tap a marked title to give it its own colour or remove it.