HTML / Javascript One Click Print (no dialogs)

Question

Is it possible to have a print option that bypasses the print dialog?

I am working on a closed system and would like to be able to pre-define the print dialog settings; and process the print as soon as I click the button.

From what I am reading, the way to do this varies for each browser. For example, IE would use ActiveX. Chrome / Firefox would require extensions. Based on this, it appears I'll have to write an application in C++ that can handle parameters passed by the browser to auto print with proper formatting (for labels). Then i'll have to rewrite it as an extension for Chrome / Firefox. End result being that users on our closed system will have to download / install these features depending on which browser they use.

I'm hoping there is another way to go about this, but this task most likely violates browser security issues.

Answer 1

I am writing this answer for firefox browser.

• Open File > Page Setup

• Make all the headers and footers blank

• Set the margins to 0 (zero)

• In the address bar of Firefox, type about:config

• Search for print.always_print_silent and double click it

• Change it from false to true

  • This lets you skip the Print pop up box that comes up, as well as skipping the step where you have to click OK, automatically printing the right sized slip.

• If print.always_print_silent does not come up

  • Right click on a blank area of the preference window

  • Select new > Boolean

  • Enter "print.always_print_silent" as the name (without quotes)

  • Click OK

  • Select true for the value

• You may also want to check what is listed for print.print_printer

  • You may have to choose Generic/Text Only (or whatever your receipt printer might be named)