THE FILES.CO JOURNAL
Notes on PDFs, privacy, and standards.
How the tools work, why your files never leave the browser, and the technical detail that matters.
A PDF has no page size until someone draws one
Page size in a PDF is just a rectangle written into the file. Change that number and the paper edge moves while the content stays put. Here's what actually resizes a page.
Aug 13, 2026 · 5 min readGuidesWhat counts as an annotation in a PDF (and why some of them look like content)
Sticky notes, highlights, links and form fields all live in the same list inside a PDF. Knowing which is which explains why removing them wholesale breaks documents.
Aug 12, 2026 · 5 min readGuidesA quick checklist before you send a PDF
Before that PDF leaves your hands, thirty seconds of checks saves real embarrassment. Size, fonts, hidden data, security. Here's the list, and how to fix each one in your browser.
Aug 12, 2026 · 5 min readProductFiles.co PDF Suite 1.5.0: ten more tools and signing with your own certificate
Version 1.5.0 is approved on both the Mac App Store and the Microsoft Store. The app goes from 16 tools to 26, all free, and adds signing with the certificate already installed on your machine.
Aug 12, 2026 · 8 min readStandardsHow big will your PDF be if you split it? Not half
Fonts and images are shared across pages, so half a document is not half the megabytes. What actually decides the size, and how to split by size instead.
Aug 11, 2026 · 5 min readGuidesHow to Merge and Reorder Scanned Pages into One Clean PDF
Your scanner spits out separate files in whatever order the pages fed through. Here's how to merge them and put every page back in the right sequence.
Aug 11, 2026 · 6 min readNo spam. Just PDF craft.
Once in a while, a useful note on PDFs and privacy.