Convert PDF to Pictures From the Linux Command Line

Convert PDF to Pictures From the Linux Command Line


Shutterstock/Tetiana Yurchenko

Changing a PDF file to a picture could be accomplished simply on the Linux command line utilizing a single command. Uncover tips on how to do set up the utility, tips on how to use it, and tips on how to automate your setup.

What Is poppler-utils ?

As alluded to within the introduction for this text, we have to set up a small utility set named poppler-utils to assist us convert PDF recordsdata to photographs.

The poppler-utils utility set permits us to transform photographs to PDF, and PDF to photographs.

Putting in poppler-utils

installing poppler-utils

To put in poppler-utils in your Debian/Apt primarily based Linux distribution (Like Ubuntu and Mint), do:

sudo apt set up poppler-utils

To put in poppler-utils in your RedHat/Yum primarily based Linux distribution (Like RedHat and Fedora), do:

sudo yum set up poppler-utils

Changing PDF to photographs

The command required is easy and simple:

pdftoppm -png check.pdf check

With the pdftoppm command we are able to convert PDF to photographs. We specify that we would like a PNG file for the output format (by utilizing -png) and that our enter file is check.pdf.

The output file we specify as check. pdftoppm will routinely add a web page quantity suffix (like -1) and an extension (primarily based on the sooner -png possibility handed).

The output file title will thus be test-1.png, as we are able to confirm subsequent:

ls test-1.png
eog test-1.png 

pdftoppm converting a pdf file to an image at the Linux command line

Any subsequent pages could be test-2.png and so on. The eog command (if eog is put in) will open the file for you so you possibly can evaluation the output, although you need to use another picture dealing with program you want.

Batch Processing of PDF Recordsdata to Pictures

We will make a one-liner command to do batch processing of all PDF recordsdata with a given title to photographs. We might then merely add this line to a small script .sh file and automate it additional, or we are able to simply use it on the command line at any time when we have to convert a considerable amount of PDF recordsdata to photographs.

ls --color=by no means check*.pdf | sed 's|.pdf||' | xargs -I{} pdftoppm {}.pdf -png {}

On this command, we first receive a listing itemizing for all PDF recordsdata which have a reputation that begins with check and ends with .pdf, utilizing the ls --color=by no means check*.pdf.

The --color=by no means is essential, as shell colour coding symbols (if energetic, as they’re by default) might generally confuse xargs.

Subsequent we use a easy sed substitute command to interchange a literal dot adopted by pdf to nothing. In different phrases, we take away the .pdf file extension.

This offers us the advantage of including it again later solely the place wanted, i.e. when specifying the enter file for pdftoppm, however not when specifying the output file for a similar pdftoppm command, a lot alike to our earlier instance above.

Lastly, we use xargs to despatched every pdf filename (minus the .pdf) to pdftoppm one after the other. We use the -I choice to xargs which permits us to specify any enter obtained (i.e. the shortened pdf filenames) by merely utilizing {} within the command that follows.

As you possibly can see, our pdftoppm command now seems to be a lot alike to the primary instance, with every particular person pdf file title as enter (re-suffixed with .pdf), and as output the pdf filename with out .pdf.

Let’s execute it:

Automatin of pdftoppm converting multiple pdf files to images

This labored advantageous: the three PDF recordsdata, all with one web page every, have been transformed to a few particular person .png recordsdata (one picture per web page and on this case per PDF as every PDF had just one web page), all aptly named and suffixed appropriately.

As a substitute for the -png possibility, one can even use -jpeg to generate JPEG recordsdata as an alternative. Use pdftoppm --help or man pdftoppm to see a full record of choices.

Wrapping up

On this article we noticed how straightforward and simple it may be to transform PDF recordsdata to picture recordsdata, and that immediately from the Linux command line! We additionally have a look at a simple strategy to automate this course of. Take pleasure in!



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