A4 versus US Letter
Six millimetres wider and eighteen shorter. It sounds trivial and it is the reason a merged revision pack prints with inconsistent margins and occasionally jams.
Guides
Articles on PDFs, past papers and revision
Working with PDFs, properly. 40 guides across eight topics, written by four named people and tested against real documents. No article here exists to occupy a search result.
Working with past exam papers as PDFsPast papers, mark schemes and the folder they live in.5 guides
How to revise effectively from PDFsTurning documents into revision you will actually do.5 guides
Reading PDFs on any deviceWhy PDFs read badly on screens, and how to fix it.5 guides
PDF basics: pages, fonts, text layers and metadataWhat is inside the file, and why it matters.5 guides
Printing PDFs properlyScaling, duplex, booklets and the fit-to-page trap.5 guides
How to scan handwriting for online submissionPhotographing paper so a marker can actually read it.5 guides
Keeping a PDF private: encryption, redaction and metadataEncryption, permissions, redaction and metadata.5 guides
Troubleshooting a PDF that misbehavesDiagnosing the file rather than guessing at it.5 guides
Guides, page 4
When PDF pages are blank
Four causes, and they need four different responses. The one that matters most is the one where the pages are blank on paper but not on screen.
Printing double-sided
Long edge or short edge, and how the stack goes back in if your printer cannot do it itself. Both are worth establishing once on two sheets rather than on forty.
Five ways to cut paper and ink use on a course print run
Five changes, in order of how much they save. The first two do most of the work and neither of them costs you anything you were using.