Quick answer. Draw, type or upload your signature, open the PDF, drag the signature where it belongs, add a date or initials if you need them, then press Download signed PDF. The file never leaves your device.
How to sign a PDF
- Create your signature. Draw it in the box, type your name in a handwriting-style font, or upload a photo or scan of your signature. Choose black or dark blue ink, then press Use this signature. Switch Use it as to My initials to make initials the same way.
- Open the PDF. Choose the file or drag it onto the page. You see the first page straight away.
- Place and resize. Drag the signature into position and pull the blue corner to make it bigger or smaller. Use Previous and Next to move between pages.
- Add a date or initials. The date box is filled with today’s date; change it to any text you like, then press Add date to this page.
- Download. Press Download signed PDF. You get a new file called signed-yourfile.pdf; the original is not changed.
Need the same signature on several pages? Select it, type a range such as 1-3, 5 (or leave the box empty for every page) and press Copy to these pages. Each copy lands in the same spot and can still be moved on its own.
What kind of signature this is
This tool puts a picture of your signature onto the page and flattens it into the PDF, so it prints and shows in every PDF reader. It is the same idea as signing a paper copy and scanning it.
It is not a certificate-based digital signature, the kind that uses a digital ID and that some government, bank, court or notarised processes require. DailyToolLab does not check who signed, does not keep an audit trail and does not send the document to anyone. This is not legal advice: whether a simple signature is enough depends on the document and on who will receive it, so check with them if you are unsure.
If the PDF you open already carries a certificate-based signature, the tool warns you. Saving a signed copy creates a new file, so that earlier certificate will no longer validate on the copy. The PDF you started with stays as it was.
Tips for a clean signature
- Drawing on a phone: turn the phone sideways for a wider pad and sign with one smooth stroke. Press Clear the pad to start again.
- Uploading a scan: sign in dark ink on plain white paper and take the photo in good light. Leave Make the white background transparent ticked so only the ink shows on the page.
- Size: on a normal A4 or Letter form, a signature about 4 to 6 cm wide looks natural.
Privacy
The PDF and your signature are opened and combined by code running in this browser tab, using the open-source pdf-lib and pdf.js libraries hosted on this site. Nothing is uploaded and nothing is stored after you close the tab. Microsoft Clarity session recording is switched off on this page, even if you accepted recording elsewhere on the site. The analytics event for this tool counts only how many marks and pages were used, never the file, its name or your signature.
Password-protected or locked PDFs
A PDF that needs a password, or that blocks changes, cannot be signed here. If you know the password, remove it with Unlock PDF, then open the unlocked copy. To stamp DRAFT or a logo instead of a signature, use Watermark PDF. To rotate, reorder or add typed text, use the PDF Editor.
For an email footer (not a signature on a PDF), use the Email Signature Generator.
Frequently asked questions
Is this sign PDF tool free?
Yes. There is no account, no watermark and no download limit.
Is my PDF uploaded?
No. The PDF is opened, signed and saved in this browser tab. Your signature image stays in the tab too, and closing the tab clears it.
Can I draw, type or upload a signature?
Yes. Draw with a mouse, finger or pen, type your name in a handwriting-style font, or upload a PNG or JPG of your signature. Then place it on any page and resize it.
Is this a legally binding or digital signature?
It is a simple visual (electronic) signature: a picture of your signature on the page. It is not a certificate-based digital signature. We do not give legal advice, and some processes still need ink, witnesses or a qualified certificate, so check what your recipient accepts.
Can I sign more than one page?
Yes. Add the signature on each page you need, or select it and copy it to a page range such as 1-3, 5. Each copy can still be moved on its own.
What if my PDF is password-protected?
If you know the password, remove it first with Unlock PDF, then open the unlocked copy here. This page does not guess passwords.
Will an existing digital certificate stay on the file?
No. Saving a signed copy creates a new file, so a certificate-based signature that was already on the PDF will not validate on the copy. The PDF Editor has the same limit. Your original file is not changed.