September 28, 2026
How to Crop or Trim a PDF's Margins Online
"Crop" and "trim" mean the same thing on a PDF — cutting down the visible margin without touching the content underneath. Here's how it actually works.
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Practical guides on working with PDFs and images, written from actually building the tools — not just re-explaining the obvious.
September 25, 2026
How to Rotate a PDF Online (Without Installing Anything)
Sideways pages after a scan are one of the most common small annoyances with PDFs — and one of the fastest to fix, if you know what's actually going on.
Read more →September 21, 2026
How to Compress a PDF Without Losing Quality
"Losing quality" almost never means what people assume it means. Here's what's actually happening inside a PDF when it shrinks — and how to keep it looking identical.
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