Add Signature Field
Add a labeled signature-line area to an existing PDF — a bordered text field where the recipient drops an image-based signature later.
1. Upload your file
How does the Add Signature Field work?
Add labeled signature-line fields to an existing PDF — bordered boxes with a horizontal signature rule and a label underneath. Each box is a real AcroForm text field (so it can be filled with typed text), but it is styled to indicate where image-based signatures (drawn or pasted via Sign PDF / Quick Sign Mobile) should be placed. Honest about scope: this is for IMAGE-based signatures, not PKI / cryptographic digital signatures — those need Adobe Acrobat or a regulated workflow like DocuSign.
🔒 Security & Privacy
All processing happens on your device. Your files never leave your browser, never touch our servers, and are not stored anywhere. Close the tab and the file is gone.
📱 Use it on any device
Works in any modern browser — Mac, Windows, Linux, iPhone, Android, and tablets. No installation, no app to download. Just open the page and start.
⚡ Quick & easy
Drag, drop, click. Most files process in seconds, not minutes. No watermarks added to your output, no per-day limits, and the tool always shows the result before asking you to download.
🎁 Always free, no signup
Free to use, every time. No account creation, no email required, no “trial” that converts to a paid plan. We make money from ads so you don’t have to pay.