The PDF format is convenient as it is reliable and universal. It is great for data sharing and archiving. However, there is one important limitation — lack of native merger tools. While Mac has a basic Preview program, Windows does not offer such functionality. Third-party tools are irreplaceable, but they deliver different results. Follow our guide to join your documents flawlessly.
Free Options
PDFs may be combined online or offline. In the first case, you can use free converter sites that transform uploaded documents. Usually, they offer the bare essentials — page rearrangement and merger. The maximum volume and number of files may be limited, too. Unlike desktop tools, which let you download PDF merger interfaces, there is no opportunity to modify the content, add navigation features, or secure the output.

The biggest concern for corporate users is the security of information. Uploading confidential documents online is not an option. Some websites promise to remove your data following the merger, but users are still wary of these methods.
You can merge PDFs for free on your PC during the trial period offered by software developers. Desktop tools offer unbeatable functionality and reliability. Discover some of the benefits below.
Desktop Merger — Best Systems
Joining pages together is the core function. Third-party software comes with an impressive range of additional features. It allows you to give your document a professional look, set up smooth navigation, protect the contents from prying eyes, etc. There are companies that provide affordable tools covering a broad spectrum of office needs. One piece of software may let you:
- add and notify headers and footers (for example, add page counters, copyright information, the name of the company, etc.)
- generate bookmarks or add them from a separate file
- insert an automatically generated table of contents that is also clickable
- attach audio files
- insert your digital signature
- add bates stamping
- set up a password
- define user permissions, etc.
Importantly, you can load as many files as you like and still have them merged quickly. Professional editions accept other file formats as well. The software can add images or spreadsheets to your PDFs easily.
Companies can protect their information in a variety of ways and prepare documents for archiving or e-discovery. A table of contents and bookmarks will make navigation flawless. All these settings are managed from one dashboard. Merging is still easy: select the source files, set the parameters, and click the ‘Start!’ button.

Make Your Choice
Free services are suitable for the most basic tasks. If you would like to customize the output, transform a lot of files, or cope with high-volume merging, opt for desktop solutions. They may also be used for free for a limited time period.