UnityPDF is an easy-to-use tool to manipulate PDF files. It can merge, split, rotate orientation, and protect PDF files with some simple steps. UnityPDF allows you to load one or more PDFs that you want to process and choose the preferred available action. It will display a complete file path, number of pages, and size of the file in MB. This way, you can inspect if you are missing a file or any page n the PDF before exporting the output. You can merge multiple files into one large PDF and can change the order the way you like. Another feature is that you can set up the password and encrypt the PDF for security purposes.
BeCyPDFMetaEdit is a program that can add, delete, and edit any type of metadata embedded in a PDF file. Every file has metadata written, e.g., author name, date, title, comments, bookmarks, page labels, keywords, etc. Those details could be changed with BeCyPDFMetaEdit, or you can also add the information that is not already written in the original file. A highlighting feature is you can change or add the transition between pages using the PDF document as a slide show.
You can add up to 11 transition effects in between slides and customize each of these effects and the duration of the effect individually. Additionally, the XMP metadata file can also be edited with this tool. It allows you to alter actions like the default page layout, initial & full-screen page mode, hide the toolbar, menu bar, and window user interface in viewer mode. The application is relatively old but can seamlessly integrate into newer operating systems easily.
PDFtk, aka PDF Toolkit, is a cross-platform software for manipulating PDF files. The tool comes in three variants; one is PDFtk Server (operated via command-line), the second is PDFtk Free, and the third is PDFtk Pro, which is paid version. The free and paid version comes with a GUI for user ease. On the contrary, the PDFtk Server has no GUI which is used for server-side processing. With the free version tool, you can quickly merge and split PDF document pages. The Pro version can be used to split, rotate, merge, stamp, watermark, and secure PDF documents or pages with a password.
AutoMetadata is a tool for exploring and manipulating metadata, document properties, and viewer preferences in multiple PDF documents. The highlighting feature of AutoMetadata is batch processing, i.e., you can select multiple PDF files and folders to quickly inspect & update information in all documents with no effort. Therefore, the tool is beneficial for you if you have a large number of PDF files to maintain. You can change the Access Permission, Document Statistics, File Details, Metadata, PDF details, and Viewer preferences of the document. It allows you to encrypt the document with password protection.
The bookmarks can be exported as an XML file and standard metadata file into a plain ASCII text file. Other functions re changing document title text, hiding menu, toolbar & windows control, selecting page layout, centering document window, and setting up options, navigation tab to show thumbnails, bookmarks, layers, or attachments. The software currently supports Windows XP and Windows 7 OS.
Pdfinfo is a PDF document information and metadata extractor tool. It operates via a command-line interface which is why you must have some knowledge about using its functions. The Pdfinfo command prints the metadata of PDF. The info contains title, subject, keywords, author, creator, producer, creation date, modification date, tags, page count, encrypted flag, print/copy permission, page size, file size, linearized, and PDF version. The software has not received any recent updates for a while, and there are a lot of its alternatives that you can consider using.
SpeedPDF Information Manager is an application that you can use to change PDF file information and metadata. The Adobe Acrobat reader is not required to manipulate the information. You just need to select the PDF file or folder that contains multiple PDFs, set the document’s information, and click the start button to change it.
The options that you can change are Author Name, Creator Name, Title info, Author info, Subject info, Keywords info, and Character set instructions. The Charset instructions include Ansi, Russian, Greek, Turkish, Baltic, and Hangeul Charset. SpeedPDF Information Manager also allows you to encrypt the file with a password or change the preexisting password.
Edit PDF metadata is an online tool from PDFCandy that can manipulate PDF info and metadata. You need to upload the file on its server by drag and drop or with add file option. After that, it will show all possible information available that you can change or add new info into the PDF file. After you have edited, you can preview the file before finalizing and download it after you are done.
The tool allows you to change the title, author name & info, subject, date of creation & modification, and keywords. Your privacy is protected, and no copy of the PDF file is stored in its server. One con is that you cannot set the password with this editor as the creator provides a separate tool for encrypted PDFs.
Stapler is a tool to edit multiple PDF documents and merge them into one large PDF file in few straightforward steps. You need at least two files to run the operation, and multiple files can be added via the drag and drop function. After you drag and drop, the files will be in a dedicated arrangement set by the tool. You can change the file orders in which it will appear later by manually changing positions from navigation buttons as it does not support drag functionality. Import the PDF after you are done setting up your order.
PDF Shaper is a lightweight and simple tool that can split, optimize, merge, watermark, sign, encrypt, decrypt and convert a PDF document. You can also delete or move pages, extract text and images from a document. The program is made for low CPU usage and can operate in batch mode without any lag. It comes in three versions. The free edition offers basic operations for home users, the premium edition expands those features and adds extra tools for advanced users, and the Professional edition comprises all tools, including Optical Image Recognition (OCR) scanner, PDF viewer, and allows commercial use.
Other features are command line support, batch file processing, direct merging for 100 MB+ files, multiple digital signatures, Unicode support, multilingual support, compatibility with the high-DPI resolution, CSV formatting support, and MS Word, DOC & DOCX support. The program is compatible with Windows XP, 7, 8, and 10.
KJA Split and merge is a simple tool to modify and merge multiple PDF files into one. The tool comes in handy if you have multiple PDF documents and you want to merge them as one large PDF file. You have the option to change the order of individual PDF, its start page, layout style, etc.
KJA Split and merge uses two types of PDF libraries. PDFNetlib for thumbnail image that represents each PDF page and the other is iTextSharp for pDF result generation. Just drag and drop files to manipulate and merge them in few clicks.
Smallpdf Protect PDF is an online tool for encrypting a PDF file. The tool will come in handy if you want to secure your document with a password and protect your sensitive document. The tool operates on the cloud, so no need for installation. Just drag and drop your PDF file, enter the password, click encrypt, and download the file to your storage. No maximum file size limit is there.
The file upload is done with a secure SSL connection. No files are kept in its server and are deleted after one hour of uploading. It suggests you a strong password with a suitable character length that is hard to crack. All in all, this easy-to-use tool is a trusted option to encrypt PDF files.