PDF guides & how-tos
These guides are written for real tasks: signing a form without a printer, merging an application pack in the right order, extracting three pages a bank asked for, or marking an invoice PAID. Each one is checked against the free tools on StampAPDF and includes the details that usually cause mistakes — page order, printed versus file page numbers, image transparency, and when an image signature is not enough.
Processing for the tools themselves runs in your browser. The articles explain both the clicks and the judgment calls around privacy and document quality. If something is unclear, tell us.
Sign, stamp & mark
How to Sign a PDF Without Printing It
Skip print-sign-scan: place a signature image on the PDF in about a minute.
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How to Create a Signature Image for PDFs
Type or draw a clean transparent PNG you can reuse on forms and contracts.
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How to Stamp PAID on an Invoice PDF
Build a reusable PAID stamp and mark invoices settled in seconds.
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How to Add a Watermark to a PDF
DRAFT, CONFIDENTIAL, or your brand across every page — size and opacity that stay readable.
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Combine, split & organize
How to Merge PDF Files Free
Combine documents into one file, control page order, and avoid common mistakes.
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How to Split a PDF Free
Break a long file apart or pull out the ranges you actually need to send.
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How to Extract Pages from a PDF
Save one page or a custom set into a new PDF without altering the original.
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How to Add Page Numbers to a PDF
Number a merged packet so reviewers can cite the same page you see.
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How to Rotate PDF Pages Free
Fix sideways scans permanently so email attachments open upright.
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