asantoolAdd a signature to a PDF
Put your signature onto a document and leave it exactly where it belongs. Draw it with a finger, a trackpad or a stylus, drag it onto the line, and use the same one on as many pages as the document needs. All of it happens on your device.
Drop the PDF you need to sign
PDFUp to 100 MB · Your files never leave your device4 steps, no waiting.
- 01Add your PDFDrag the file onto the page or pick it from your device. Nothing is uploaded — it opens straight in the browser.
- 02Draw your signatureTap the page and a box opens where you tapped. Sign in it with a finger, trackpad or stylus, then resize it by its corners.
- 03Put it on the lineDrag it where it belongs and nudge it with the arrow keys. Zoom in first if the signature line is small.
- 04Use it againThe signature stays in the panel, so putting it on page seven as well is one tap. Then download the signed file.
Common questions
Can I use the same signature on every page?
Yes. A signature you make stays in the side panel for as long as the tab is open, so you place it once and reuse it. The page strip marks every page that already carries one, which is how you check nothing was missed before downloading.
Can I upload a photo of my signature instead of drawing it?
Yes. Choose Image and pick a PNG, JPG or WebP. If it is a photograph of a signature on paper, the white background is removed for you so it sits on the document rather than in a white box.
Will the signature still be there when I print it?
Yes. It is written into the PDF itself, not stored as a comment or an annotation layer, so it prints and appears the same in every reader.
Is my document uploaded anywhere?
No. Every PDF tool here runs inside your browser. The file is read from disk, worked on in memory, and written back out — it is never sent to a server. That matters more for documents than photos: contracts, statements and ID scans are exactly the things you should not be uploading to a stranger's website.