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2. Extracting embedded images from a PDF - Ask Ubuntu

   askubuntu.com/questions/150100

   Use pdfimages. pdfimages is a PDF image extractor tool which saves the images in a PDF file to PPM, PBM, JPEG or JPEG 2000 file (s) format. It's a part of the poppler-utils package, which you'll need to install. Usage: pdfimages [options] <PDF-file> <image-root>. option -all will extract images in original format.

3. How to reduce the size of a pdf file? - Ask Ubuntu

   askubuntu.com/questions/207447

   I'm looking for a way in Ubuntu to reduce the size of a pdf (by reducing the quality of the images). I know that this can be done in Ghostscript by typing the following command in terminal: gs -s...

4. How can I reduce the file size of a scanned PDF file?

   askubuntu.com/questions/113544

   I have a 72.9 MB PDF file that I need to shrink to 500 KB or below. The file was a JPEG image that I had scanned and then converted to PDF.

5. How do I convert a scanned PDF into a PDF with text

   askubuntu.com/questions/267920

   I have scanned about 80 pages into gray scale pdf (image format). The end size of the file is about 70MB, which is very huge. Now I am looking for a method to convert the grayscale image-based PDF file into a simple black/white text-based PDF file. I have done many attempts with gs but with no success (only a few percent recovery).

6. Create a single pdf from multiple text, images or pdf files

   askubuntu.com/questions/303849

   I have a bunch of text files, images and pdf files which I want to convert into a single pdf file. How do I do it?

7. How to convert PDF to image? - Ask Ubuntu

   askubuntu.com/questions/50170

   I have requirement of converting PDF pages to images. There is a background image with some text in my file, and when I save it as an image only the background image gets saved. Is there any software available for the same so that complete page can be converted to an image?

8. How to open a PDF file from terminal? - Ask Ubuntu

   askubuntu.com/questions/43264

   I personally use a shell script: $ cat pdf #! /bin/bash gnome-open ${1:-*.pdf} When you call pdf it will open all pdfs in the current directory, specify which pdf by supplying an argument. I have many directories containing but one pdf file (e.g. so many LaTeX directories) so only having to write pdf saves me quite some time and keystrokes.

9. How can I extract a page range / a part of a PDF? - Ask Ubuntu

   askubuntu.com/questions/221962

   Navigate to the folder where you want to save the cropped pdf, type a name, click the button Format, on the "Select image format type" window select PDF and click the button Select. Back on the "Browse and select a file" window, click the button Save. Before saving, imagemagick will ask to "select page geometry".

10. Is there a simple way to identify if a PDF is scanned?

    askubuntu.com/questions/1094198

    If a pdf file contains an image (inserted in a document alongside text or as whole pages, 'scanned pdf'), the file often (maybe always) contains the string /Image/. In the same way you can search for the string /Text to tell if a pdf file contains text (not scanned). I made the shellscript pdf-text-or-image, and it might work in most cases with ...

11. imagemagick - convert images to pdf - Ask Ubuntu

    askubuntu.com/questions/493584

    Use print assistant from Gwenview (KDE image viewer). Open Gwenview, then Plugins -> Images -> Print assistant. Add all the images that you want to print, reorder them as you like, choose number of images per page, other print options, etc. and print to PDF directly or with CUPS-PDF. Share.