PDF knowledge
What PDFs actually are, why the world standardised on them, and how to handle size, printing, emailing and archiving like it’s easy.
What is a PDF, really? (And why every office wants one)PDF in plain words: a container that freezes a document’s exact appearance on every device — which is precisely why forms, courts and HR demand it.
JPEG vs PDF for documents: which should you send?A photo and a PDF can hold the same pixels — but they behave differently in inboxes, portals and printers. When each format is right.
Multi-page PDFs explained: one file, many pages, right orderHow pages live inside a PDF, why order is part of the file, and the habits that keep multi-page scans coherent for recipients.
PDF page sizes for scans: why yours isn’t “A4” and why that’s fineScanned pages take the document’s own proportions rather than forcing letter/A4 — what that means for viewing, printing and picky portals.
How to keep scanned PDF sizes reasonableWhy some scans balloon to 10 MB, what actually drives PDF size, and capture habits that keep files portal-friendly without visible quality loss.
Emailing large PDFs without bounce-backsAttachment limits, link-sharing trade-offs and splitting strategies: getting a hefty scanned PDF into someone’s inbox reliably.
Printing scanned PDFs: settings that keep them crispFrom phone or computer to paper: fit-vs-actual-size, greyscale choices and why a good scan prints indistinguishably from a photocopy.
Image PDFs vs searchable PDFs: what scans containWhy Ctrl+F finds nothing in most scans, what an OCR text layer adds, and when image-only PDFs are exactly right.
PDFs for job applications: documents that pass HR systemsCertificates, references and ID pages that upload cleanly to ATS portals: formats, naming, sizes and the scan quality recruiters notice.
PDFs for visa applications: meeting consulate document rulesVisa portals are the strictest uploaders around. Colour, completeness, size caps and naming — how scanned PDFs sail through.
Organising scanned documents so you can find anything in 10 secondsA folder scheme, a naming pattern and a weekly two-minute habit — the whole system for a life’s paperwork, no apps required.
How long to keep documents (and which to scan before tossing)Practical retention rules of thumb for receipts, taxes, contracts and IDs — and how scanning changes the keep-or-toss calculus.
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