PDF Guides
Short, practical articles about everyday PDF problems. Each guide explains what is going on inside the file, which fixes work, and when a different tool – ours or someone else's – is the better choice.
How to Make a PDF Small Enough to Email
Why a PDF bounces as "too large", how much room an attachment limit really leaves, and the order in which to try the fixes – from lossless re-saving to lower image resolution and splitting.
Tools used: Compress PDF, Split PDF, PDF to JPG, JPG to PDF.
Handling Sensitive PDFs: Local Processing vs Uploading
What happens to a file you upload to an online converter, how in-browser processing differs, a simple way to verify it yourself, and the hidden data to check before you share a document.
Tools used: PDF to Text, Add Watermark, Merge PDF, Split PDF.
PDF to Image: Choosing the Right Resolution (DPI)
What DPI means when you convert PDF pages to images, how many pixels screens, slides, printing and OCR really need, and why doubling the resolution quadruples memory use.
Tools used: PDF to JPG, JPG to PDF, Split PDF.
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All PDF Hut tools run in your browser without uploading your files. Browse the full list of tools, or go straight to Merge PDF, Split PDF or Compress PDF. Questions or suggestions for a new guide are welcome on our contact page.