JPEGs to PDF

$ sudo apt update && sudo apt install imagemagick -y
$ sudo nano /etc/ImageMagick-6/policy.xml
<policy domain="coder" rights="none" pattern="PDF" />
Ubah jadi
<policy domain="coder" rights="read|write" pattern="PDF" />
$ convert 1.jpg 2.jpg 3.jpg output.pdf

### Alternative ###

$ sudo apt install img2pdf -y
$ img2pdf 1.jpg 2.jpg 3.jpg -o output.pdf