![](https://help.apple.com/assets/59D1B1440946225478B7C4D4/59D1B1450946225478B7C4DB/en_US/250e7e237d665e298613005e58e1a1da.png)
Preview Help
Welcome to Preview
View and annotate PDFs, fill out and sign forms, and edit images. When you’re done, share your file, export a password-protected PDF, or export images in a variety of file types.
![A PDF in Preview.](https://help.apple.com/assets/59D1B1440946225478B7C4D4/59D1B1450946225478B7C4DB/en_US/a1ae440a974fd4aad0b458fe6e15fcac.png)
![The signature tool in Preview.](https://help.apple.com/assets/59D1B1440946225478B7C4D4/59D1B1450946225478B7C4DB/en_US/5d94bb0f852389fa623a9a3cbbb41dde.png)
Fill out and sign forms right on your Mac
You don’t need to print out PDF forms. Just open the document in Preview, click the Show Markup Toolbar button , and use the Markup tools to fill in the form. Then click the Sign button
to create and add your signature electronically.
![A password-protected PDF.](https://help.apple.com/assets/59D1B1440946225478B7C4D4/59D1B1450946225478B7C4DB/en_US/87a0d8686856bee4a6f3dceac20b179a.png)
Protect your confidential documents
If a PDF contains sensitive information, you can keep it secure by adding a password. Choose File > Export, select Encrypt, and type a password.
![A page thumbnail from one PDF to the sidebar of another.](https://help.apple.com/assets/59D1B1440946225478B7C4D4/59D1B1450946225478B7C4DB/en_US/8e6b7fdec5b34505493bbde268c554af.png)
Combine PDF documents
Manage lots of PDFs? Easily combine them so you can keep track of just one document. Open a PDF in Preview, then drag another PDF file from the Finder to the sidebar of the Preview window. Only need a few pages? Drag the page thumbnails from one PDF to the sidebar of another.
![The Export options in Preview.](https://help.apple.com/assets/59D1B1440946225478B7C4D4/59D1B1450946225478B7C4DB/en_US/98bcceda9d9cd5152e4f21cd9dff844a.png)
Convert image files to a variety of file types
Preview supports a large set of image file types, including JPEG, PNG, PSD, and TIFF. If you receive a photo that you can’t open in your photo editing app, or need to convert an image to a different format, choose File > Export, click the Format pop-up menu, and choose a file type.
Want to learn more? See Fill out and sign PDF forms, Password-protect a PDF, Combine PDFs, and Convert graphics file types.