How to reduce a PDF on Mac without losing readable text
Create a smaller PDF in Preview, compare the result, and decide when a download link is a better choice.
Author: leevxv2
How to zip and unzip files in Windows: a send-and-check workflow
Package several files into a ZIP, extract a test copy, and check what the recipient will actually receive.
A simple file naming system that still makes sense six months later
Use dates, subjects and explicit versions to make everyday documents easier to find without renaming application-managed files.
How to check a backup before you need to restore it
Restore a small sample into a separate folder and record what worked, without overwriting the original files.
Before using an online file converter: a practical decision checklist
Decide whether to convert locally, prepare a non-sensitive sample, and inspect the output before sharing it.
Downloaded file is empty or will not open: what to check first
Distinguish an unfinished download from a missing file or format problem before trying another application.
Does renaming a file extension convert the file?
What a filename changes, what it cannot change, and a safe way to recover from an accidental rename.
Why can’t I select text in a PDF? Check before using OCR
Distinguish a scanned page from selectable text, then check OCR results before relying on them.
MB vs MiB: why the same file can show different sizes
Compare decimal and binary file sizes with worked examples and a calculator that does not upload files.