Home

Awesome

PDFINVERTER - darken (or lighten) a PDF

PDFInverter (GUI and CLI) will create a new PDF at the specified location from a source PDF. All colors will be inverted (original shown on left):

<img src="https://user-images.githubusercontent.com/30498791/166346009-2b635dda-3c79-4557-9a7b-20f5bb64f075.png" alt="example1"><br> <img src="https://user-images.githubusercontent.com/30498791/166346010-9d05b846-c924-4012-9693-928eafbc2a83.png" alt="example2"><br> <img src="https://user-images.githubusercontent.com/30498791/166346011-c470d255-602c-4379-a8bd-bc0e8a2085ed.png" alt="example3"><br>

Unfortunately page links are not preserved, but this program will darken PDFs making them suitable for night reading.

A 2-3 page PDF will invert very quickly. However a 400 page PDF may take 3-4 minutes.

This project should build on any platform with <a href="https://github.com/gographics/imagick">ImageMagick bindings</a> for Golang. <code>export CGO_CFLAGS_ALLOW='-Xpreprocessor'</code> may need to be executed to run/build.

The GUI is developed with Golang QT bindings: <img src="https://user-images.githubusercontent.com/30498791/166346008-b40e110c-9fb9-4ca1-9434-0e1f5a330171.png" alt="example2">

Get the project and build:
<pre> <code> git clone https://github.com/rootVIII/pdfinverter.git cd &lt;project root&gt; go build -o bin/pdfinverter ./bin/pdfinverter </code> </pre>
command-line usage:
<pre> <code> # Required -i input PDF file path -o output PDF file path Note: If no command line arguments are provided, the GUI version will open. </code> </pre> <hr> This project was developed on macOS Big Sur 11.0.1