# Sign a PDF

You can sign a PDF to indicate your approval. A PDF can be signed more than once and by more than one person. When you sign a document, your digital signature appears in the signature field. The appearance of the signature depends on options you choose. The actual information for your digital signature is embedded in the PDF. Only PDFs with Reader Rights enabled can be signed.

### Sign a PDF

For best results, use Preview Document mode to add your signature. See Sign in Preview Document mode.

1. Click the signature field, or do one of the following:

   - Choose Document > Sign > Sign Document.

   - Click the Sign button in the Tasks toolbar and choose Sign Document or Place Signature.

2. If you chose Place Signature, you’re prompted to draw a signature field for your signature.
3. If you haven’t specified a digital ID, you’re prompted to find or create one.
4. In the Sign Document dialog box, choose the digital ID you want to use. If you defined a personalized signature, choose it from the menu.
5. If you selected advanced digital signature preferences, do any of the following:

   - Choose a reason for signing the document.

   - Type your location and contact information.

   - Review any document warnings about content that may impact signing.

6. If your digital ID requires a password, type it in the Password box.
7. Click Sign, and specify a new name for the document so you can make changes to the original PDF without invalidating the signature, and click Save.

### Sign a PDF in a web browser

To sign a PDF on the web, the document must contain an empty signature field. When you sign a document in a browser, only the incremental portion of the file is saved to your hard drive.

1. Click a signature field, and then follow the steps to add your digital signature.
2. To retain a copy of the signed document, click the Save A Copy button in the File toolbar.