PDF Electronic Signature & Annotator

When a quote, consent form or lease arrives with “please sign and return,” the old routine is print, sign and scan, which is slow and often leaves a blurry, crooked file. This tool lets you sign a PDF right in the browser. Write your signature with a mouse, trackpad or finger, or upload a transparent PNG of your signature, place it on the document and export the signed PDF.

Draw mode offers black, blue and red ink; black or blue suits formal documents. If you sign often, sign a sheet of white paper, photograph it, remove the background and save it as a transparent PNG; uploading that each time looks far more natural than mouse handwriting. Once placed on the page preview, the signature can be dragged, resized from its corner or deleted and placed again. On export, pdf-lib embeds the signature image while keeping the original text and layout.

The signature is currently placed on the first page, which suits quotes, reply slips and consent forms with a signature line on page one. If the signature line is elsewhere, extract that page with our PDF splitter, sign it, then reassemble the document with the PDF merger. For PDFs with an open password, the tool asks for the password before loading.

Important: placing a signature image on a document is a simple electronic signature. It is accepted for most everyday business and internal approvals, but it is not a certificate-based digital signature and cannot technically prove who signed or that the file has not changed since. For documents where regulations require certificate signatures, such as some government, financial or notarized filings, use a qualified digital ID or a service like DocuSign. Files and signatures are processed entirely in your browser and never uploaded.