PDF guides & how-tos
Short, practical answers to everyday PDF questions — each one doable in minutes with the free tools on this site.
How to Sign a PDF Without Printing It
Skip the print-sign-scan routine: place your signature digitally in about a minute.
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How to Stamp PAID on an Invoice PDF
Set up a reusable PAID stamp and mark invoices settled in 15 seconds each.
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How to Merge PDF Files Free
Combine documents into one file, control the page order, and pick out specific pages.
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How to Add a Watermark to a PDF
DRAFT, CONFIDENTIAL, or your brand across every page — with the right size and opacity.
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How to Convert JPG to PDF Free
Turn phone photos of receipts and documents into clean, submittable PDFs.
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Are Online PDF Tools Safe?
What actually happens to your file on PDF websites, and how to check for yourself.
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