How to sign PDF on iPhone and iPad
The marker icon is displayed as a small pen tip icon, usually in the upper right corner. One function in the label is called signature. This feature allows you to draw and reuse signatures on iPhone and iPad.
To get started, open the PDF in a file application or a mail application.
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There, click the marker icon in the upper right corner.
Now, you will see drawing and annotation tools at the bottom of the screen. Here, click the+button and select the signature option.
If this is your first time using this feature, you will be asked to draw and create a signature. If you want more space, you can switch to landscape mode. Just sign here with your finger, and you can use Apple Pencil if you have an iPad.
Now, you will find the signature in the document. Click the signature box to select it. You can move it in the document, and you can enlarge or reduce it.
When you are satisfied with the signature location, click the "Finish" button in the upper left corner.
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The signature will be added to the PDF and you can send it now.
You can go back to the Signature menu, select your signature and add it to the PDF. (No need to sign again)
How to sign PDF on Mac
On your Mac, you can simply use the built-in preview application to sign the PDF.
First, use Finder (file browser) to find the PDF file to be signed, and then double-click to open the document in the preview application. If it is not the default application for PDF, right-click the file and select the Preview option from the Open With menu.
Now, click the Mark button in the top toolbar.
This will display all editing options. Here, select the signature option. From the drop-down list, you will be able to create and add signatures. You can use the trackpad of a Mac, iPhone or iPad (connected to the same network) to create a signature.
If you want to sign with the trackpad, click the Click Here to Start button.
Now, put the cursor in the center of the trackpad and start creating your signature. When you are finished, press any key on the keyboard.
The signature will be added to the signature menu immediately. Now, you can click the signature to insert it into the document.
You can click on the signature, or you can move it. It can also be enlarged or reduced.
Signing with a Mac trackpad has one major drawback. You must sign on a continuous line. You can use iPhone or iPad as canvas to alleviate this situation. This is a particularly good choice for iPad users with Apple Pencil.
In the signature menu, click the iPhone or iPad button at the top. Now your iPhone or iPad will display the familiar signature screen.
The signature will now be displayed on your Mac. Click Finish to save it.
After adding a signature, you can reuse it as many times as you need.