[nb] Edit: cli_commands.md

cli_commands.md

@@ -24,3 +24,20 @@ ocrmypdf --optimize 3 --skip-text input.pdf output.pdf
 ocrmypdf --optimize 3 --image-dpi 300 --output-type pdf \
          --force-ocr --tesseract-pagesegmode 1 input.pdf output.pdf
 
+# down sample pdfs to 72dpi
+(single file)
+gs -sDEVICE=pdfwrite -dCompatibilityLevel=1.4 \
+   -dPDFSETTINGS=/screen \
+   -dNOPAUSE -dQUIET -dBATCH \
+   -sOutputFile=output.pdf input.pdf
+
+(batch)
+
+for f in *.PDF; do
+    gs -sDEVICE=pdfwrite -dCompatibilityLevel=1.4 \
+       -dNOPAUSE -dBATCH \
+       -dDownsampleColorImages=true -dColorImageResolution=72 \
+       -dDownsampleGrayImages=true -dGrayImageResolution=72 \
+       -dDownsampleMonoImages=true -dMonoImageResolution=72 \
+       -sOutputFile="output_pdfs/$f" "$f"
+done