Questions[ebooks](ubuntu)

Where are Amazon Kindle ebooks located on my Linux PC after I download them for offline reading with the "Kindle Cloud Reader" Chrome app, & how do I convert them to PDF format?

For Windows this seems to be the answer:

• Where does Chrome stores offline books downloaded using Amazon-Cloud Extension on Windows 7? - Stack Overflow
• Where is my Ebook that I just bought from Amazon Kindle to my PC? - Ebooks Stack Exchange

For MacOS this seems to be the answer:

• OS X Kindle App: Where are the books located? - Ask Different

But for Linux there doesn't seem to be an answer. :(

My aim is to convert the Kindle ebook to a PDF format (which I much rather prefer) for offline reading on any device. Enough of this proprietary "read through Kindle app only" garbage. I'm on Linux for Heaven's sake!

Update: in ~/.config/google-chrome I have the following:

gabriels:~/.config/google-chrome$ ls
Avatars                       pnacl
BrowserMetrics                Profile 1
BrowserMetrics-active.pma     Profile 2
BrowserMetrics-spare.pma      Safe Browsing
Certificate Revocation Lists  Safe Browsing Channel IDs
CertificateTransparency       Safe Browsing Channel IDs-journal
Consent To Send Stats         Safe Browsing Cookies
Crash Reports                 Safe Browsing Cookies-journal
Dictionaries                  ShaderCache
FileTypePolicies              SingletonCookie
First Run                     SingletonLock
Guest Profile                 SingletonSocket
Local State                   SSLErrorAssistant
NativeMessagingHosts          Subresource Filter
OriginTrials                  System Profile
PepperFlash                   Webstore Downloads

I'd like to remove the DRM protection from a couple of my eBooks, just for PERSONAL USE (since they are locked, I cannot read them). They are protected by the Adobe ADE DRM.

On the Internet there are many ways to get the result, but most of them are outdated. Is there a simple and effective one?

For the moment I run Adobe Digital Editions under Wine to download ebooks burdened with ditigal restriction management. I only use it to open .acsm files supplied by ebook-shops, which contain authentication information required to download the actual DRM'ed ebook files, which I then transfer to my reader-device with calibre. My question is, if there exist open source alternatives to Adobe Digital Editions. They don't need much functionality. I just want to put the .acsm-file in and get the .epub out (no, I don't want to remove the drm, that'd be illegal afaik).

What software can I use to view .epub documents?

Can anyone suggest a nice eBook reader in Ubuntu?

Preferably something lightweight.