Add a signature to a PDF

blupdf lets you add signature to PDF files in three ways - draw it, type it or upload an image - then place it exactly on the signature line and export. Signatures are saved to your account so the next document takes seconds, and they are stored privately.

Start free - 1,000 credits

How it works

  1. Step 1

    Open the document

    Upload the PDF you need to sign, or open one you already edited. Scanned forms work too.

  2. Step 2

    Draw, type or upload

    Draw with a mouse, trackpad or finger; type your name and pick a style; or upload a photo of your signature, which blupdf cleans up to just the ink.

  3. Step 3

    Place and resize

    Drag the signature onto the line and resize from a corner. It snaps lightly to nearby text so it sits straight.

  4. Step 4

    Export

    Download the signed PDF. The signature is a vector or image object in the file, sharp at any zoom.

Why blupdf

  • Reusable signatures

    Create once, reuse on every document from your account. Delete them any time in Settings.

  • Clean uploads

    A photo of your signature on paper is turned into transparent ink; no grey background rectangle.

  • Works on scans and forms

    Place a signature on a scanned agreement or a flat form just like on a digital PDF.

  • Initials and dates too

    Add typed initials or a date block next to the signature with the same tools.

Frequently asked questions

Related features

Start editing PDFs the easy way

1,000 free credits on signup. No card required.