Last Firefox with proper orphan control: https://ftp.mozilla.org/pub/firefox/releases/77.0.1/win64/en-US/Firefox%20Setup%2077.0.1.exe
Install font/*
Printers & Scanners > Print Server Properties > Create a new form > Trade paperback > 6.25 by 9.25
git clone https://github.com/mwichary/twitter-export-image-fill.git
git clone https://github.com/twitter/twitter-text.git
Firefox (not MacOS, can't get 0 margins) All this can be bypassed when Firefox supports @page :left, :right. https://bugzilla.mozilla.org/show_bug.cgi?id=813187
File, Page Setup
Format & Options: Print Background (colors & images) [or non-black text like time will be in black] Margins & Header/Footer: all 0.0, blank
about:config
print.printer_Adobe_PDF.print_oddpages: true print.printer_Adobe_PDF.print_evenpages: false
Set pages to Odd in generator form.
File, Print
Adobe PDF, Trade paperback, Press Quality (for higher user icon DPI) odd.pdf
about:config
print.printer_Adobe_PDF.print_oddpages: false print.printer_Adobe_PDF.print_evenpages: true
Set pages to Even in generator form.
File, Print
Adobe PDF, Press Quality (for nice user icon) even.pdf
put CollatePages.js in C:\Program Files (x86)\Adobe\Acrobat DC\Acrobat\Javascripts Acrobat DC
open odd.pdf Tools, JavaScript, Debugger, paste
app.addToolButtonline, Shift+Enter Tools, Add-on Tools, Collate Select even.pdf Save as complete.pdf
Inspect with View, Page Display, Two Page Scrolling & Show Cover Page in Two Page View Confirm gutter is smaller in the middle, opposite of a book
Add and name footers, Arial, 10pt
"left": Page Range Options: even 3 onward, bottom: 0.45, left/right: 0.35. "Right": Page Range Options: odd 3 onward, bottom: 0.45, left/right: 0.35. If there's a weird unembeddable font on last page, extract and resave in Illustrator.
Set Deeper black, 270%? Figure out bleed/margin/padding and svg img alignment and 100% width to stay out of bleed
Showstoppers
All browsers: rasterized background SVG Chrome: box-overflow clone fails on flex Firefox: @page :left and :right nonexistant