Add a "Sign here" box to a PDF
Add a signature box with a line and label to your PDF. Ideal for contracts, forms and agreements that need to be signed by hand. Free and local.
Choose your PDF
Drop here or click to choose
Files stay on your device — nothing is uploaded
Adds a "Sign here" placeholder box with a signature line. The box is a visual element — not a form field. Print and sign by hand, or use the Sign tool to draw a digital signature.
advertentie
Your file is processed in your browser and never uploaded.
How does it work?
- 1
Choose your PDF
Drag the PDF here.
- 2
Choose the position
Select where the signature box should go.
- 3
Download
Download the PDF with the signature box.
Frequently asked questions
Is this a PDF form field?
No, the box is a visual element — a rectangle with a line. Use the Sign tool for a real digital signature.
Can I add multiple signature boxes?
Choose "All pages" to place the box on every page.
Are my files uploaded?
No. Everything happens in your own browser. Your file never leaves your device and is not stored anywhere.
Is it free?
Yes, completely free, without watermark or account. The site is paid for by ads.
Why in the browser?
PDFrust runs entirely in your browser using WebAssembly and modern JavaScript libraries such as pdf-lib and PDF.js. Your file is never sent to a server — all processing happens locally on your device. This means your documents remain private by design, regardless of what they contain. There is no account required, no file size limit, and nothing is stored after you close the tab.
Related tools