UUPDF allows you to add text, annotations, and electronic signatures to PDF documents. Combined with the ability to import files from a diverse range of sources, this effectively gives you complete mobility to handle any document workflow easily from your iPhone or iPad.

1. How to Annotate PDF

• Open a PDF by tapping it on UPDF app.
• Select an annotation tool - marker, highlighter, eraser, outline tool, etc. You can change the color of the pen, and you can set the style of the pen.
• Apply your annotation to the document.
• Tap Done to automatically save and close the file.

2. How to Sign a PDF

• Tap a PDF file to open it.
• Tap the Pen tool icon on the top right.
• Tap the + symbol and select "Signature".
• Then add the written signature of yourself and click "Done".
• Your signature will be added on the PDF files. Then you can move the position of it and adjust the size of it by clicking the blue border.