Stamp your handwritten signature or company stamp image onto your PDF documents. Select placement, scale, and download your signed document in seconds.
A PNG image with a transparent background produces the cleanest, most realistic signature appearance.
No. This tool places a visual signature image overlay. For cryptographic PKI digital signatures (e.g. DocuSign), dedicated HSM services are used.
Yes. You can position the signature at "Bottom right", "Bottom left", or "Top right" with adjustable size presets.
PDF Toolbox is engineered with a strict browser-first architecture. All file operations execute entirely in your local browser sandbox via modern WebAssembly and JavaScript engines. No file bytes or sensitive document data are ever uploaded, buffered, or stored on external servers or cloud infrastructure. Memory buffers are cleared immediately when you finish or close your tab.