The Coherent PDF Command Line Tools allow you to manipulate existing PDF files in a variety of ways. For example:
- Merge PDF files together, or split them apart
- Encrypt and decrypt
- Scale, crop and rotate pages
- Read and set document info and metadata
- Copy, add or remove bookmarks
- Stamp logos, text, dates, page numbers
- Add or remove attachments
- Losslessly compress PDF files
cpdf tool has been available commercially since 2007, and is widely used in industry and government.
Now we're releasing two tools for free, the main program under a special not-for-commercial-use license, and a lossless PDF squeezer under the LGPL. If you like the tools and want to use them commercially, or need support, licenses are available from Coherent Graphics Ltd. Commercial use involves anything other than private, personal use. Charities and educational institutions still require a license, but one may be obtained at greatly reduced cost - ask us. If you're still not sure if you need a license, ask us.
Download binaries now for Windows, Mac, or Linux
Pre-built binaries are available for Windows, Mac OS 10.6 and later, Linux 32 bit Intel and Linux 64 bit intel.
Build from source
In all cases, on Microsoft Windows, substitute
Select some pages from a file
in.pdf and write to
cpdf in.pdf 1-3,12-end -o out.pdf
Merge some files together:
cpdf one.pdf two.pdf three.pdf -o merged.pdf
Split a file into single-page files
cpdf -split in.pdf -o page%%%.pdf
Encrypt a file with 128 bit AES encryption with an owner password but blank user password:
cpdf -encrypt AES "pass" "" in.pdf -o out.pdf
Output some information about a file:
cpdf -info file.pdf Encryption: Not encrypted Permissions: Linearized: true Version: 1.4 Pages: 8 Title: catalogueproduit-UK.qxd Author: James Peterson Subject: Keywords: Creator: QuarkXPress: pictwpstops filter 1.0 Producer: Acrobat Distiller 6.0 for Macintosh Created: D:20060926213913+02'00' Modified: D:20060926213913+02'00'
Output information about each page:
cpdf -page-info file.pdf Page 1: MediaBox: 0.000000 0.000000 768.000000 1366.000000 CropBox: BleedBox: 0.000000 0.000000 768.000000 1366.000000 TrimBox: 0.000000 0.000000 768.000000 1366.000000 ArtBox: 0.000000 0.000000 768.000000 1366.000000 Rotation: 0 Page 2: MediaBox: 0.000000 0.000000 768.000000 1366.000000 CropBox: BleedBox: 0.000000 0.000000 768.000000 1366.000000 TrimBox: 0.000000 0.000000 768.000000 1366.000000 ArtBox: 0.000000 0.000000 768.000000 1366.000000 Rotation: 0
Scale pages to A4 paper:
cpdf -scale-to-fit a4portrait in.pdf -o out.pdf
Crop a file:
cpdf -crop "20mm 20mm 300mm 300mm" in.pdf -o out.pdf
Add some text with page numbers:
cpdf -add-text "Page %Page of %EndPage" -top 100pt -font "Times-Roman" -font-size 20 in.pdf -o out.pdf
Stamp one PDF file over each page of another:
cpdf -stamp-on logo.pdf in.pdf -o out.pdf
Attach a file to page 5:
cpdf -attach-file sheet.xls -to-page 5 in.pdf -o out.pdf
Combine several commands together using AND: flip a file vertically and stamp text, then encrypt.
cpdf in.pdf -vflip AND -add-text "Page %Page" AND -encrypt 128bit owner "" -o out.pdf
Compress a file without loss of information:
cpdf -squeeze in.pdf -o out.pdf
Or, using the standalone PDF squeezer:
cpdfsqueeze in.pdf out.pdf
Please note, though, that we prioritise support for paying customers.
Q. My command works, but fails when I put it in a Windows Batch file.
cpdf commands use
% as a special character. Use
Q. Is it any different from the commercial version?
A. The community release prints a message when run, and sets the Producer field to show it was the last program to touch the PDF.
Q. I want to express thanks for this free program, but I'm not a commercial user. What can I do?
A. You can buy a copy of the User Manual on Amazon for $9.99.