pdfcrop: add page (#10859)

* pdfcrop: add page

---------

Co-authored-by: K.B.Dharun Krishna <kbdharunkrishna@gmail.com>

pages/linux/pdfcrop.md

@@ -0,0 +1,28 @@
+# pdfcrop
+
+> Detect and remove margins in each page in a PDF file.
+> More information: <https://github.com/ho-tex/pdfcrop>.
+
+- Automatically detect and remove the margin for each page in a PDF file:
+
+`pdfcrop {{path/to/input_file.pdf}} {{path/to/output_file.pdf}}`
+
+- Set the margins of each page to a specific value:
+
+`pdfcrop {{path/to/input_file.pdf}} --margins '{{left}} {{top}} {{right}} {{bottom}}' {{path/to/output_file.pdf}}`
+
+- Set the margins of each page to a specific value, using the same value for left, top, right and bottom:
+
+`pdfcrop {{path/to/input_file.pdf}} --margins {{300}} {{path/to/output_file.pdf}}`
+
+- Use a user-defined bounding box for cropping instead of automatically detecting it:
+
+`pdfcrop {{path/to/input_file.pdf}} --bbox '{{left}} {{top}} {{right}} {{bottom}}' {{path/to/output_file.pdf}}`
+
+- Use different user-defined bounding boxes for odd and even pages:
+
+`pdfcrop {{path/to/input_file.pdf}} --bbox-odd '{{left}} {{top}} {{right}} {{bottom}}' --bbox-even '{{left}} {{top}} {{right}} {{bottom}}' {{path/to/output_file.pdf}}`
+
+- Automatically detect margins using a lower resolution for improved performance:
+
+`pdfcrop {{path/to/input_file.pdf}} --resolution {{72}} {{path/to/output_file.pdf}}`