bash combine pdf or other image files into pdf
For FAST without RECOMPRESSION of PDF files, use Coherent PDF Command Line Tools Community Release
*download includes a notarized OSX version of Catelina*
1 | cpdf one.pdf two.pdf three.pdf -o merged.pdf |
Using imageMagik with various file types
1 | brew install imagemagick |
1 | convert 01.pdf 02.jpg page*.png output_file.pdf |
With compression:
1 | convert -compress jpeg -quality 85 *.png out.pdf |
Source: StackOverflow.com
Alternatively, try img2pdf which does not (usually) re-encode image data.