PDF Utility – Merge, Split, Delete, Extract & Lock is a free app for the Android operating system that allows you to do several things with your PDF files: merge them, split them, delete pages, or even add watermarks to them. This app can also rotate pages and add a watermark to them. The best thing about this app is that it is very easy to use and does not require you to have any experience in using it. So if you have some PDF files that you want to modify, you can just use this app to do that.

To start using this app, just install it and open it. Then, select the file that you want to modify. Then, you will be able to see all the options that you have: merge, split, delete, or add watermarks to the file. The app will be able to do that for all the pages of the file, or just a specific page. So if you want to delete all the pages of the file, just select the option of delete all pages.

To add a watermark to the file, just select the option of add watermark.