From ea803a27275c8a89c42cb539b9c01f4e5b097d2a Mon Sep 17 00:00:00 2001 From: attah Date: Sun, 13 Jun 2021 15:55:44 +0200 Subject: [PATCH] Update README.md --- README.md | 42 +++++++++++++++++++++++++++++++++++++++++- 1 file changed, 41 insertions(+), 1 deletion(-) diff --git a/README.md b/README.md index e317a0b..5c1f1c0 100644 --- a/README.md +++ b/README.md @@ -3,4 +3,44 @@ Network printing for Sailfish OS ![SeaPrint icon](icons/172x172/harbour-seaprint.png) -Print PDFs and images over IPP (Internet Printing Protocol). Most, but not all, IPP-capable printers are supported. For printing PDFs, SeaPrint relies on the printer either supporting PDF natively, or the optional dependency `poppler-utils` to convert to Postscript, PWG-raster or URF-raster. Images can be printed on printers accepting JPEG, PNG and GIF as well as PWG-raster or URF-raster. +Print PDFs and images over IPP (Internet Printing Protocol). + +Most, but not all, IPP-capable printers are supported. + +A minority of printers support only PCL and/or their own proprietary formats, these are not supported. + +## Format support + +In order to work with more printers, SeaPrint can use `poppler-utils` (pdftoppm, pdftops, pdftocairo) to convert PDFs. + +For PDFs, your printer needs to support one of the following formats: + * PDF + * Postscript (needs poppler-utils) + * PWG-raster (needs poppler-utils) + * URF-raster (needs poppler-utils) + +For Postscript, your printer needs to support Postscript natively. + +For printing "Office" files, like .doc(x) and odt, you need to install + `calligraconverter` (from the `calligra` package in Sailfish OS 4.2 onwards). + Then the printer support follows that of PDF. + +For images, your printer needs to support one of the following formats: + * PNG + * JPEG + * PWG-raster + * URF-raster + * PDF + * Postscript (needs poppler-utils) + +For printing JPEG images, transferring the unaltered image has priority and the printer does the scaling. +Other image formats are lossless and SeaPrint does scale-and-rotate to fit, so JPEG has lowest prio there. + +Printers with any of these IPP certifications/sub-standards should likely be supported: + + * IPP Everywhere + * AirPrint + * Mopria + * WiFi Direct + +(obviously SeaPrint is unaffiliated and uncertified)