Various PDF Methods

Making a PDF file out of images

For a single image: magick [image name] [document name].pdf For multiple images: magick [eg. IMG*] [document name].pdf

To first resize images to the same size before making a PDF: magick [image] -resize [width]x[height] output.jpg

Merge multiple PDF files

pdfunite file1.pdf file2.pdf file3.pdf output.pdf

Split the original PDF file into single page PDF files

pdfseparate input.pdf output-page\ %d.pdf

Split a range of pages into separate PDF files

The flags -f and -l signify respectively the first and last pages of the range. It will yield separate files for each page in the range, which would have to be merged later, if so desired. pdfseparate -f 1 -l 5 input.pdf output-page\ %d.pdf

Convert a PDF file to an image

With ImageMagick: magick input.pdf output.png

With poppler: pdftoppm -png input.pdf > output.png

Add a signature to a PDF file

Make a .svg signature, for example in inkscape, and then use Xournal++ In the top menu, choose Tools→Image, click the place you want to insert the image of your signature and then choose the file in the file dialogue.

Add OCR to a PDF

You need a program called ocrmypdf. It’s available in the AUR. Then it is simply: ocrmypdf your-file.pdf your-file-with-OCR.pdf Optionally you can add a -l flag, with a three letter language code (e.g. deu, spa) to change the language.