PDF File Merging
COO observing time solicitations
typically call for
Portable Document Format
submissions. Further, we often ask proposers to consolidate two or more separately generated documents (e.g. proposal coversheet,
proposal narrative) into a single submission file to facilitate our proposal handling and decrease the possibility of processing error.
So it's attendant on us to provide some guidance on options to perform PDF file consolidation or merging.
Some PDF File Merging Options (you might find useful):
Acrobat Pro is a
software application available for
platforms, and performs PDF file merging among many advanced
PDF manipulation features. For Caltech-based applicants: Caltech maintains a site license for Acrobat Pro — see the
Caltech IMSS Software website
for more information. Also please note that the Mac and PC computers in the Cahill computer lab (249 Cahill) have Acrobat Pro
installed, Note the lab computers are commonly-used machines, so plan using them to process potentially sensitive information
is a popular free software suite for processing Adobe's
and PDF notations. ghostscript is commonly/typically found pre-installed on unix-like operating systems
(e.g. linux, MacOS) and supports a command-line invocation
for merging multiple PDF files into a single PDF file:
gs -dNOPAUSE -sDEVICE=pdfwrite -sOUTPUTFILE=combined.pdf -dBATCH pdf1.pdf pdf2.pdf pdf3.pdf ...
For additional discussion of this use case see
Combine multiple PDFs into one file in Ubuntu Linux.
is a web-based application that merges multiple PDF files into a single file (i.e. no software to install).
We (COO) take no position on whether users should feel secure uploading potentially competition-sensitive
information to an external website; we encourage you to consider the security implications carefully.
is another on-line PDF merge utility. Please consider security implications carefully.
a Windows-centric "PDF toolkit" suite that includes both free and pay variants. Apparently there are older ports for linux.
PDFpen is a MacOS-specific
COTS application that apparently supports many PDF manipulations including merging.
Nitro is COTS PDF
manipulation software that apparently supports many PDF manipulations including merging.
is a free Windows-only PDF merging utility.
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PDF Merging / v 0.1.1
Last updated: 2 June 2020 ACM