# PDFs

## Compress with Ghostscript

`ghostscript` command can be used to compress PDF files. It has multiple predefined settings:

> `-dPDFSETTINGS=configuration`
>
> Presets the "distiller parameters" to one of four predefined settings:
>
> `/screen` selects low-resolution output similar to the Acrobat Distiller (up to version X) "Screen Optimized" setting.
>
> `/ebook` selects medium-resolution output similar to the Acrobat Distiller (up to version X) "eBook" setting.
>
> `/printer` selects output similar to the Acrobat Distiller "Print Optimized" (up to version X) setting.
>
> `/prepress` selects output similar to Acrobat Distiller "Prepress Optimized" (up to version X) setting.
>
> `/default` selects output intended to be useful across a wide variety of uses, possibly at the expense of a larger output file.

More information about these profiles can be found from <https://www.ghostscript.com/doc/current/VectorDevices.htm#distillerparams>

## References

* How can I reduce the file size of a scanned PDF file? - <https://askubuntu.com/questions/113544/how-can-i-reduce-the-file-size-of-a-scanned-pdf-file>


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://notes.tatusl.dev/misc/pdfs.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.