Here is a new tool from HeiDoc.net. Merge a large number of files, documents and images into a single PDF file with the new "Multi PDF Merger". A large number of document types is supported, such as Microsoft Office, images text files and PDF and PostScript documents.
There is a number of online services for PDF merging, however, as far as we can tell, all of them are restricted in multiple ways (unless the user decides to pay for the service). So we thought that it's time to offer a powerful PDF merging tool for free!
Support: For any support issues, please use our support forum. Current bugs and issues should be addressed in the forum and not by email or Facebook, so that other users can also benefit from the discussion.
Supported Document Types
The following documents can be merged into PDF. Please note the individual requirements for each of the document type.
Requires Microsoft Office 2013 or newer. Supported Office applications: Word, Excel, Powerpoint, Publisher, Visio. Additionally supported document types: text (*.txt), comma separated values (*.csv), rich text format (*.rtf), OpenOffice/LibreOffice.
HTML documents and websites (URL):
Requires Internet Explorer 8 or newer. A screenshot of the HTML page or the website is merged into the PDF document. The HTML document must be reasonably simple, otherwise a blank page is inserted instead.
No additional requirements. Supported image file types: JPEG (*.jpg), GIF (*.gif), Portable Network Graphics (*.png), TIFF (*.tif), PostScript (*.ps, *.eps).
Version 1.11 (9 March 2020): Bugfixes.
Version 1.10 (8 March 2020): Remember GhostScript location; landscape orientation for Word and Excel documents; refreshed icons; many bugfixes under the hood.
Version 1.01 (24 February 2020): Updated .NET Framework to 4.8; compatibility issue with Ghostscript 9.50.
Version 1.00 (18 January 2019): Initial release.