PDF Utility is a free app and a comprehensive tool that allows you to perform various actions on pdf files.

The Feature List is as follows :
⭕ Create PDF from Images
⭕ Edit Images
⭕ Merge PDF Files
⭕ Remove pages from PDF Files
⭕ Add pages to PDF Files
⭕ Convert excel to PDF Files
⭕ Add watermarks to PDF Files
⭕ Add Text to PDF Files
⭕ Split PDF Files
⭕ Invert PDF Files
⭕ Compress PDF Files
⭕ Remote duplicate pages from PDF files
⭕ Reorder PDF file pages
⭕ Extract images from PDF file
⭕ Convert PDF to Images
⭕ Extract text from PDF
⭕ Zip PDF file
⭕ Set password on PDF file

All these feature at one place helps you to perform all kind of functionalities on a PDF file and that too for free.