File transfer is slow when printing from command line

[fdjkdf]

I use cmd commands for background silent printing, but the file transfer is really slow, it's much bigger than the original source file, sometimes it takes even half an hour to print a dozen files.
My commands are fine.（SumatraPDF-3.4.6-64.exe -print-to-default -print-settings ",,,,1x" "x.pdf”）
The source file is opened with other software and then printed at normal speed.

[GitHubRulesOK]

Artifex GhostScript is probably the best for printing via Command Line and should be much higher quality.
SumatraPDF is based on Artifex MuPDF Viewing technology that has no print functions, so has to use Windows basic screen orientated printing.

[fdjkdf]

Artifex GhostScript 可能是通过命令行打印的最佳选择，并且质量应该更高。 SumatraPDF 基于 Artifex MuPDF Viewing 技术，没有打印功能，因此必须使用 Windows 基本屏幕定向打印。

Is sumatraPDF printing based on ghost, I just used ghost to print and it's still very slow, about the same speed as suma!

[GitHubRulesOK]

@fdjkdf
PDF printing in widows is generally slow

1. read start of file for any early structure
   no its not there go to end of file where index is
   decompress and or decode index and note where file root starts
   darn its back near the start of file
   calculate from index where first page to print may be found and hope its not other end of file.
   no as usual its near the other end
   got it
   now index all the pages we may need to decompress
   go to first page and start decompiling
   oh dear the needed fonts are down at opposite end of file and we need to read the index as to where other objects like images are. So are we ready to print one page ?

etc etc . PDF is really the most random of all formats for printout
3 pages of text takes under 3 seconds to print from notepad.
where the initial PS design was few images and no document fonts as those were firmware in the printer so instantly usable, by sending just text control codes.

Modern PDF are about 10 times bigger than necessary, a single UTF letter can easily be needing over 10 bytes, (compared to a one byte Latin character) but then computers are 25% of 100 times faster so no real gains with modern methods. The greater the compression the longer to unpack for printing.