Firefox orphan control was broken after 77.0.1 and then fixed before 127.0.

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

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

Set pages to Odd in generator form. File, Print

Adobe PDF, Trade paperback, Press Quality (for higher user icon DPI)
odd.pdf

Set pages to Even in generator form. File, Print

Adobe PDF, Press Quality (for nice user icon)
even.pdf

pdftk A=odd.pdf B=even.pdf shuffle Aodd Beven output interleaved.pdf

Inspect with View, Page Display, Two Page Scrolling & Show Cover Page in Two Page View

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.

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