iPhone users can now use their device to sign important PDFs without having to look for a desktop computer.

You can also use the Share icon to save the document as a PDF to your Files app, Google Drive, or another file storage service, or save it as a JPEG to your Photos app.

iOS 15 is Apple's latest software update and now offers a functionality to edit PDF files directly on your device.

Preview automatically fills in the current PDF’s name. To avoid overwriting that file, enter a new descriptive name and click Save.

Some might suggest you download an app to convert a picture to a PDF on the iPhone, but the truth is you can do it for free without any apps.