A quick arrow or a circled figure lands faster than typing out the same feedback in a comment — but only if the line actually looks intentional, not shaky.
Here's how to get clean results drawing on a PDF with FlexFiles.
A mouse isn't built for freehand drawing, but zooming in helps more than most people expect — working at 150-200% zoom smooths out curves that look shaky at normal size. A stylus or trackpad will always be steadier, but this closes most of the gap.
Thin strokes disappear on a dense, text-heavy page — medium width holds up better. Stick to a color that reads clearly against the page background; anything too close to the existing text color defeats the point of marking it.
A rough sketch communicates faster than a paragraph of comments — as long as it's legible. A few settings adjustments are usually the difference.
