Guides for working with PDFs and images
Practical how-tos, written straight, no fluff, no fake stats, just steps that work and a link to the free tool that does it.
How to compress a PDF without losing quality
What actually makes a PDF large, the real difference between a lossless clean-up and a strong compression pass, and how to pick settings that don't wreck legibility.
More guides
How to make a free printable calendar PDF
Generate a 12-month calendar for any year, with birthdays and custom dates marked.
How to actually redact a PDF (not just draw a black box)
Why covering text with a black rectangle doesn't remove it, and what does.
How to sign a PDF online for free
Add a signature without printing, scanning or paying for e-signature software.
How to add page numbers to a PDF
Number every page, any position, any format, including Bates-style numbering.
How to add a watermark to a PDF
Stamp DRAFT, CONFIDENTIAL or any text diagonally across every page.
How to crop the margins of a PDF
Trim oversized margins or scanner borders without touching the content.
How to make a free QR code (no app, no sign-up)
Turn any text or URL into a QR code, and pick the right error correction level.
How to generate a strong, secure password
What actually makes a password strong, and why length beats clever tricks.
How to merge multiple PDFs into one file
Combine several PDFs into one, in the right order, and what happens to the content.
How to split a PDF into separate pages
Pull out specific pages or break a big PDF into individual files.
Why does my PDF file size keep growing?
The real causes of PDF bloat, embedded fonts, leftover edit history, oversized images.
How to rotate, delete and reorder PDF pages
Fix a sideways scan or drop a blank page without redoing the whole document.
PDF vs JPG: which should you use for scanned documents?
What each format is actually built for, and how to convert between them.
Images to PDF and back again
Turn photos or scans into a PDF, or pull PDF pages back out as images.
Is it safe to use free online PDF tools?
What actually happens to your file, and how to verify the privacy claims yourself.
How to compress an image for web or email
Get a photo under a size limit without it looking like a fax.
How to convert a PNG to JPG (and when you should)
When converting actually helps, and when it wrecks transparency or text.
The right way to resize images for web without losing quality
Picking target dimensions, and why downsizing beats upsizing.