PDFtodo is described as 'is used to help you change PDF docs. It contains 23 modules like compress PDF, merge PDF, split PDF, convert PDF to Word or other document formats or convert from other formats to PDF. PDFtodo is 100% free and supports batch processing' and is an website in the Photos & Graphics category. There are more than 100 alternatives to PDFtodo, not only websites but also apps for a variety of platforms, including Windows, Mac, Linux and iPhone. The best alternative is PDF-XChange Editor, which is free. Other great sites and apps similar to PDFtodo are PDFsam (Freemium, Open Source), Adobe Acrobat DC (Paid), PDFTK Builder (Free, Open Source) and Smallpdf (Freemium).
The smallest, fastest, most feature-rich PDF editor/viewer available * Full Direct Content Editing (text based PDFs, not scanned/image based PDFs) * Includes OCR feature * View, Edit, and annotate PDF files
PDFsam Basic is a free, open source, multi-platform software designed to: * Merge PDF files (the entire documents or selected page ranges), retaining or discarding bookmarks, acroforms and generating or not a table of contents.
PDFTK Builder is a free graphical interface to for PDFtk, making it much easier to use. It is a easy to use tool to collate (merge), split, encrypt, decrypt, stamp and rotate (only 90°, 180° or 270°) pdf documents.
Nitro Pro gives you everything you need to create, convert, edit, sign, and share 100% industry-standard PDF files. It's simple, straightforward, and intuitive to use — so you can work more productively, your way.