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.
Pages per sheet: why the print dialog isn't the same as a file
The print dialog can put several pages on a sheet, but it leaves you nothing to keep. Making the montage inside the PDF gives you a file you can send, archive or take to a print shop.
Aug 10, 2026 · 5 min readStandardsPDF/X explained: getting a file ready for a print shop
Sending artwork to a printer? PDF/X is the format that stops nasty surprises. Here's what it is, why printers ask for it, and how to prep the basics in your browser.
Aug 10, 2026 · 5 min readSecurityYou sent the signed form. The person who got it can still change the numbers
A filled PDF form stays editable after you send it, and an altered copy looks exactly as legitimate as yours. Flattening turns a form with answers in it into a document.
Aug 9, 2026 · 5 min readGuidesHow to Create a Clickable Table of Contents in a PDF
Turn a long PDF into a document readers can actually navigate. Build a clickable table of contents with bookmarks and page numbers, entirely in your browser.
Aug 9, 2026 · 6 min readGuidesFrom photo to document: why your scanned PDF looks wrong
Grey paper, shadows, faded text. What actually happens to a photo of a document, and how the new files.co scanning tool fixes it.
Aug 9, 2026 · 4 min readSecurityA black box erases nothing: redacting a PDF properly
Covering data with a rectangle leaves the text intact underneath. A new files.co tool redacts for real, without the file ever leaving your machine.
Aug 8, 2026 · 4 min readNo spam. Just PDF craft.
Once in a while, a useful note on PDFs and privacy.