pdftotext: add page (#1757)

pages/common/pdftotext.md

@@ -0,0 +1,19 @@
+# pdftotext
+
+> Convert PDF files to plain text format.
+
+- Convert filename.pdf to plain text and print it to standard output:
+
+`pdftotext {{filename.pdf}} -`
+
+- Convert filename.pdf to plain text and save it as filename.txt:
+
+`pdftotext {{filename.pdf}}`
+
+- Convert input.pdf to plain text and save it as output.txt:
+
+`pdftotext {{input.pdf}} {{output.txt}}`
+
+- Convert pages 2, 3 and 4 of input.pdf to plain text and save them as output.txt:
+
+`pdftotext -f {{2}} -l {{4}} {{input.pdf}} {{output.txt}}`