[bart__]

Since nobody has mentioned it yet, KOReader is an open source reader application for ereaders, kindles & others, and has the ability to reflow PDF's. While not perfect, it can work good enough to read well formatted PDF's.

[unhammer]

KOReader reflows pdf's for ereaders using k2pdfopt, see https://www.willus.com/k2pdfopt/

Kindles need to be jailbroken to use koreader, and Amazon apparantly makes that harder with each device :-/

I have this as a right-click action for files matching *.pdf in my file browser (thunar):

    k2pdfopt -ui- -dev kp3 %F

So if I right-click on a pdf I can immediately reflow it into a kindle-readable version.

(%F is the quoted file name, in your terminal you would `k2pdfopt -ui- -dev kp3 'something.pdf'`)

[innocenat]

> Amazon apparantly makes that harder with each device

Alternative phrasing: Amazon is continuing to fix security bugs in Kindle device.

[stkdump]

What threat is the security for?

[innocenat]

The technical detail about latest WatchThis hasn't been published yet, but the previous KindleBrake seems to be using malicious JXR image payload via built-in browser. That sounds like pretty serious security flaw to me.