Sign a PDF online in seconds: draw your signature with a mouse or finger, type your name in a script font, or upload a scanned signature image. Then open your PDF, click any page to place the signature, drag it into position, and download the signed file — free, with no sign-up and nothing ever uploaded.
What does this tool do?
This free online signature tool lets you sign a PDF without printing, scanning or installing anything. Create your signature once — draw it, type it or upload an image — then place it anywhere on any page of your PDF and download the signed document. Everything runs in your browser with the pdf-lib JavaScript library, so your documents never travel to a server.
Unlike signature features locked behind subscriptions in desktop PDF readers, this tool is free and unlimited: sign as many documents as you like, place as many signatures as you like, on as many pages as you like. It works on phones (draw with your finger), tablets and desktops alike.
How do I sign a PDF online?
The whole workflow takes under a minute:
- Create your signature: pick the Draw tab and sign with your mouse or finger, the Type tab to render your name in a script font, or the Upload tab to use a scanned signature image. Pick an ink colour and redraw until you like it.
- Click “Choose PDF” (or drop the file onto the box) to load the document you want to sign.
- Use the Prev/Next buttons to find the right page — signature blocks are usually on the last page of a contract.
- Click on the page preview where the signature should go. Drag the box to fine-tune the position and use the width slider to resize it.
- Click “Download signed PDF” to embed your signature into the file and save it — ready to email, print or submit.
How does electronic signing work here?
When you draw or type, your signature is captured as a transparent PNG image on a drawing canvas — the exact pixels you see are what get embedded. When you press download, pdf-lib opens your PDF in the browser, converts the signature PNG into a PDF image object, and draws it onto the selected pages at the precise position and size you chose. Nothing else in the document changes: the text, layout and other pages stay byte-identical, and your signature becomes a permanent part of the file.
Is a signature made online legally valid?
For most everyday agreements — freelance contracts, offer letters, invoices, consent forms — a drawn or typed electronic signature is widely accepted as a sign of intent, especially when both parties have agreed to sign digitally. That said, rules differ by country, and some regulated documents (court filings, certain property or banking paperwork) require witnessed or certified signatures. When in doubt, check what the receiving party accepts before you sign. Note that this tool adds a visible signature image; it does not apply cryptographic digital certificates.
Use cases in Pakistan
Freelancers signing client contracts and NDAs without access to a printer; students signing internship offer letters and university forms; job applicants signing appointment letters; landlords and tenants initialling rental agreements; small businesses signing invoices and quotations before emailing them. Anywhere a “sign and return” PDF lands in your inbox, this tool replaces the old print-sign-scan loop.
Limitations
This tool places a visible signature image — it cannot create certified digital signatures backed by a certificate authority, and it cannot edit or remove text that is already in the PDF. Password-protected PDFs must be unlocked first. Very large PDFs may be slow on older phones, and pages with unusual rotations are handled on a best-effort basis. As with any signing workflow, open the downloaded file once to confirm the signature sits exactly where you expect.
Frequently asked questions
Is it safe to sign documents in a browser?
Yes. Your PDF and your signature are processed entirely on your own device by JavaScript libraries running in the page. Nothing is uploaded to any server, and closing the tab leaves nothing behind. For sensitive contracts, that is safer than emailing the file to an online signing service.
Do I need an account, or pay anything?
No. There is no sign-up, no free trial that expires, and no watermark added to your document. You can sign as many PDFs as you like, as often as you like, completely free.
Can I sign a PDF on my phone?
Yes. Open this page on your phone, use the Draw tab and sign with your finger or a stylus, then place the signature on the document exactly as on desktop. Everything else — page navigation, dragging, resizing — works with touch.
Which signature method looks most professional?
A scanned pen-on-paper signature uploaded as an image usually looks the most natural, because it is your real handwriting. Drawing works well with a stylus or a careful mouse hand; typing gives a clean script look that suits informal documents. Try all three and keep the one you like.
Can I place more than one signature, or sign several pages?
Yes. Click the page preview to add as many signature boxes as you need, on any pages — useful for initialling every page of a contract or collecting two signatures on one form. Each box can be moved and resized independently.
What about password-protected PDFs?
Protected files cannot be opened by the browser tool. Open the PDF with its password in your PDF reader, save or print an unprotected copy, and then sign that copy here.
Updated October 2026 · Built and tested by Sharjeel Tahir · How our tools are tested