Sign a PDF online

Drawing uses a smoothed pen whose line gets thinner when you move fast and thicker when you move slowly, like real ink. With a pressure-sensitive stylus, pressure is used too. You can pick from several ink colors; black or dark blue is the usual choice for formal documents.

Typed signatures support accented letters, so names like José or Zoë come out right.

Uploaded photos have the paper background removed automatically, giving you a transparent PNG that sits cleanly on the signature line. Sign with a dark pen on plain white paper and take the photo in bright, even light.

Most documents need more than a signature. Everything below can go on any page, as many times as you like:

• Signatures, for example on the last page and on an addendum.
• Initials, created separately, for the bottom of every page.
• Today's date with one click.
• Text anywhere, such as your name, address or a missing detail on a form with no fillable fields.
• Checkmarks (✓) and X marks (✗) for boxes.

Drag any item to move it and pull its corner to resize. Placement is accurate on rotated and landscape pages too. If the PDF has real fillable fields, complete them first with Fill PDF form, then sign the filled copy.

In the US, the federal ESIGN Act and the Uniform Electronic Transactions Act (adopted by most states) generally allow electronic signatures for contracts and records, and an image of your signature on a PDF is a common form of electronic signature. Whether it is accepted in a particular case depends on the document and on what the other party requires.

Keep in mind:

• This tool adds a visual signature, an image of your signature. It is not a certificate-based digital signature that proves who signed and detects later changes.
• Some documents, such as certain government, court, real estate or notarized documents, may require wet ink, notarization or a certified digital signature.
• When in doubt, ask the person or organization that requested the signature what they accept.

This is general information, not legal advice. To check a certificate-based signature someone else applied, use Verify PDF signature.

The tool can remember up to 6 signatures so you do not have to redraw them next time. They are stored only in this browser on this device, never sent anywhere, and you can delete any of them with one click.

The PDF itself is never uploaded either: the signed file is created in your browser. On a shared or public computer, delete your saved signatures when you are done, so the next person using the same browser can't place them on another document.

Your landlord emails a 4-page lease. Every page needs your initials, and the last page needs your signature and the date.

1. Open the tool on your phone and load the PDF.
2. Tap Signature and sign with your finger. Not happy with it? Clear it and try again.
3. On page 4, drag the signature onto the Tenant line and resize it to fit.
4. Add the date next to it; today's date is filled in for you.
5. Create your initials and place them at the bottom of all four pages.
6. Download the signed PDF, open it to check, and send it back.

If you also need to attach a pay stub or ID copy, merge the files first, then sign.

• Lock filled-in fields. To stop others from changing form fields after you sign, use Flatten PDF.
• Hide what the recipient doesn't need. Remove account numbers or other private details with Redact PDF before signing.
• Natural size. A printed signature is usually about 1.5 to 2.5 inches wide.
• Too large to email? Compress PDF shrinks the signed file.