PDF Tips & Guides
How to actually get PDF jobs done — and how the tools work under the hood, so you know exactly what happens to your files.
Are Online PDF Tools Safe? What Actually Happens to Your File
Contracts, payslips, passports, medical letters — people push all of it through free PDF sites. Here is what actually happens on the other end, and the three checks that tell you whether a tool ever sees your file.
How to Compress a PDF Without Wrecking the Quality
A 60 MB PDF is almost never 60 MB of text. Understand what is actually taking up the space and you can cut most files by 80% with no visible difference at all.
How to Merge PDF Files Into One Document
Combining PDFs is the most-requested PDF job there is. Doing it well means thinking about order, page size, and the things that quietly break along the way.
How to Split a PDF Into Separate Files
"Split", "extract", and "remove" sound like the same job and are not. Pick the wrong one and you spend twenty minutes undoing it.
How to Password Protect a PDF (and What the Protection Actually Does)
PDF security has two completely different mechanisms with confusingly similar names. One is real cryptography. The other is a note asking the viewer to behave.
How to Sign a PDF Electronically (Without Printing Anything)
Print, sign, scan, email is still how a shocking number of contracts get signed. Here is the two-minute version, and the legal background that explains why it holds up.
PDF to JPG and Back: Converting Between Documents and Images
Rendering a page to an image and extracting the images inside a page are different operations with different results. Knowing which you want saves a lot of re-doing.