PDFduck Blog

Guides for converting & working with PDFs

Practical, jargon-free articles on getting clean conversions and better PDFs — written by the people who built PDFduck.

PDF tips

How to merge PDF files for free (without uploading them)

Combine several PDFs into one document, set the page order, and keep your paperwork private — all in your browser.

PDF tips

How to split a PDF: extract or separate pages

Need just a few pages, or one file per page? Here's how to split a PDF two different ways, privately and for free.

PDF tips

How to convert a PDF to JPG (and when you should)

JPG vs PNG, resolution, and privacy all matter. The right way to turn PDF pages into sharp, shareable images.

Images

How to combine multiple images into one PDF

Turn a stack of photos or screenshots into one tidy, properly ordered PDF — without an app and without uploads.

Privacy

Are online PDF tools safe? What really happens to your files

Where does your document actually go when you use a free converter? The real risks, and how to stay private.

Word · DOCX

How to convert Word to PDF without losing formatting

Fonts shifting, tables breaking, images moving? Here's why it happens and exactly how to get a pixel-perfect PDF from your DOCX every time.

Images

JPG vs PNG: which format should you use (and when to convert to PDF)?

They look the same until you zoom in. A plain-English guide to choosing between JPG and PNG — and when a PDF is the smarter choice.

PDF tips

How to reduce PDF file size (without wrecking quality)

Too big to email or upload? Five reliable ways to shrink a PDF, what actually causes bloat, and how to keep your text sharp.