[citizenkeen]

I read a boatload of 2 column PDFs on my phone. Liquid Mode has been on PDF Reader on Android for... it feels like a year now? And it's fantastic. Without it I have to constantly pinch and zoom and swipe to the upper right to start a new column, etc.

I hate PDFs, but if I want to read a document I've stored in print fidelity from the 80s on my phone, Liquid is rock solid.

[yeellow]

Which android pdf reader has it?

[Ayesh]

Not OP. Xiaomi MIUI bundles WPS office, which has a "mobile view" for PDFs. It's far from perfect, but it can single-column some multi-column PDFs. Some PDFs, like restaurant PDFs are downright butchered though.

[virgilp]

I would guess Adobe's? Or otherwise it's not "Liquid Mode" but a similar feature...

[yeellow]

According to the article Adobe reader for Android got this feature recently. I tried it and I am disappointed. Maybe OP was talking about reflow mode that indeed was accessible in many pdf readers, but for technical papers (math) it was useless.