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+# optipdf - optimize PDF files for size
+
+Uses [qpdf](https://qpdf.sourceforge.io/) to optimize PDF files for size.
+
+## Options
+
+| Option | Meaning
+| - | -
+| --backup=SUFFIX   | Keep a backup of un-optimized PDF files.
+| --no-backup       | Turn off backups (default).
+| --careful         | Stop if there are warnings in the PDF (default).
+| --no-careful      | Don't stop if there are warnings in the PDF.
+| --force, -f       | Force overwriting backups. No effect if --no-backup.
+| --no-force        | Prompt when overwriting backups (default). No effect if --no-backup.
+| --lossy           | Let qpdf(1) try to optimize images for size. MAY LEAD TO IMAGE QUALITY DEGRADATION. See qpdf(1) for more information.
+| --no-lossy        | Don't optimize images (default). This is safer.
+| --preserve-timestamp     | Copy timestamp from original file.
+| --no-preserve-timestamp  | Omit timestamp from original file (default).
+
+## License
+
+Copyright (C) 2021-2022 Dan Church.
+
+License GPLv3: GNU GPL version 3.0 (https://www.gnu.org/licenses/gpl-3.0.html)
+
+with Commons Clause 1.0 (https://commonsclause.com/).
+
+This is free software: you are free to change and redistribute it.
+
+There is NO WARRANTY, to the extent permitted by law.
+
+You may NOT use this software for commercial purposes.