How-to guides
Step-by-step guides for stamping, signing and verifying documents online — no printing, no scanning.
- How to add a company stamp to a PDF — Add a company stamp to a PDF online without printing or scanning. Design a round company seal, official seal or approval stamp, drop it on any page, and download the stamped PDF — free to design, $1.50 to download or free on a plan.
- How to sign a PDF without printing — Sign a PDF without printing or scanning. Upload the document, add your signature, and download the signed PDF in your browser — no app, no account to start. Every signature is legally binding with a tamper-evident SHA-256 seal.
- How to make a certified true copy of a document online — Create a certified true copy of a document online. Add a “certified true copy of the original” stamp, seal it with a tamper-evident SHA-256 fingerprint and public QR verification, and download a PDF anyone can check — for visa, immigration, banking and legal use.
- How to add an invoice approval stamp and signature to a PDF — Add a PAID, APPROVED or coding stamp and a signature to an invoice PDF online. Serialize and verify each stamp so accounts-payable approvals can’t be faked — stop internal invoice fraud without printing or scanning.