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PDF Tips & Tutorials
Practical guides to help you get more done with PDFs — from merging and compressing to unlocking and comparing.
How to Merge PDFs for Free
Learn how to combine multiple PDF files into one document in seconds — no software to install, no accounts to create.
Read more →How to Compress a PDF for Email
Shrink oversized PDFs so they fit within email attachment limits. Learn about compression levels and expected file size reductions.
Read more →How to Remove a Password from a PDF
Unlock password-protected PDFs when you know the password. Understand the difference between owner and user passwords.
Read more →How to Add Page Numbers to a PDF
Add professional page numbers to any PDF with customizable formatting and positioning. Perfect for legal docs, manuscripts, and presentations.
Read more →How to Compare Two PDFs Side by Side
Spot differences between PDF versions using side-by-side, overlay, and slider comparison modes. Perfect for contract revisions and design proofs.
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