LCP DRM - Extracting Files

[Sats]

Originally Posted by ab78727

I regret to say that ebooks.com is now on the lcpl bandwagon as well: windows "book downloads" now default to thori um/lcpl unless one looks and clicks the legacy ade tab.

Given the context of the thread, is that really a bad thing?

[JSWolf]

Originally Posted by ab78727

I regret to say that ebooks.com is now on the lcpl bandwagon as well: windows "book downloads" now default to thori um/lcpl unless one looks and clicks the legacy ade tab.

I don't see eBooks.com defaulting to LCP. You have to choose which DRM you want for eBooks with DRM. Download to Windows or Mac is LCP and Some e-readers is Adept (Adobe).

[catfarmer1998]

Hi. I am new to mobileread, but I have been a lurker for a while. I am trying to use this method but when I do I get stuck at this message. calibre, version 9.9.0
ERROR: Unhandled exception: <b>InvalidPlugin</b>:The plugin in '/Users/name/Downloads/dedrmlcpatch (1).zip' is invalid. It does not contain a top-level __init__.py file

calibre 9.9 embedded-python: True
macOS-26.1-arm64-arm-64bit-Mach-O Darwin ('64bit', 'Mach-O')
('Darwin', '25.1.0', 'Darwin Kernel Version 25.1.0: Mon Oct 20 19:34:03 PDT 2025; root:xnu-12377.41.6~2/RELEASE_ARM64_T8112')
Python 3.14.5
OSX: ('26.1', ('', '', ''), 'arm64')
Interface language: None
EXE path: /private/var/folders/dh/zfhfmr8566114jk312h30zrm0000gn/T/AppTranslocation/10F93626-6597-4C68-8416-D6D3F1755411/d/calibre.app/Contents/MacOS/calibre
Successfully initialized third party plugins: DeACSM (0, 0, 16) && LCPL Input (0, 0, 5) && Gather KFX-ZIP (from KFX Input) (2, 25, 0) && Package KFX (from KFX Input) (2, 25, 0) && APNX Generator (1, 1, 0) && Amazon.com Multiple Countries (1, 0, 0) && Annotations (1, 17, 13) && Audio M3U (1, 0, 0) && Clean Metadata (0, 0, 6) && Count Pages (1, 13, 6) && Ebook Translator (2, 4, 1) && Epub Metaguider GUI (intellireading.com) (1, 0, 2) && EpubCheck (0, 2, 5) && EpubMerge (3, 2, 0) && Favourites Menu (1, 3, 1) && Find Duplicates (1, 10, 9) && Goodreads (1, 8, 3) && Goodreads Sync (1, 16, 11) && Goodreads_Rating (4, 0, 0) && Highlights to Obsidian (1, 4, 1) && Job Spy (1, 0, 239) && KFX metadata reader (from KFX Input) (2, 25, 0) && From KFX (2, 25, 0) && KFX Input (2, 25, 0) && Set KFX metadata (from KFX Output) (2, 15, 0) && KFX Output (2, 15, 0) && Kindle Collections (1, 7, 29) && Kindle hi-res covers (0, 5, 1) && KindleUnpack - The Plugin (0, 83, 7) && Kobo Utilities (2, 22, 1) && Last Modified (0, 8, 5) && Modify ePub (1, 8, 6) && Obok DeDRM (10, 0, 9) && OverDrive Libby (0, 2, 3) && Overdrive Link (2, 58, 0) && Quality Check (1, 14, 2) && Quick Preferences (1, 7, 1) && Reading List (1, 15, 6) && WordDumb (3, 33, 3) && X-Ray Creator (3, 2, 1) && ePub Extended Metadata {Writer} (0, 11, 4) && ePub Extended Metadata {Reader} (0, 11, 4) && ePub Extended Metadata (0, 11, 4) && Overdrive Link Metadata Source (2, 58, 0)
Traceback (most recent call last):
File "calibre/gui2/preferences/plugins.py", line 331, in add_plugin
File "calibre/customize/ui.py", line 574, in add_plugin
File "calibre/customize/ui.py", line 88, in load_plugin
File "calibre/customize/zipplugin.py", line 311, in load
File "calibre/customize/zipplugin.py", line 401, in _locate_code
calibre.customize.InvalidPlugin: The plugin in '/Users/name/Downloads/dedrmlcpatch (1).zip' is invalid. It does not contain a top-level __init__.py file

I have tried on both windows and mac. Someone on reddit said something about copying a file to a new folder but I am not sure which folder that is. Any advice is appreciated! Thank you.

[DNSB]

Did you read the README.md file in the .zip file? If not, please read the Usage section.

Just to make it clear, that file is not a calibre plugin. as the README.md says "A patch to fix LCP DRM removal in NoDrm’s Dedrm or its forks".

[Jadehawk]

LCP DeDRM Web Application

Worked for Netgalley books. Don't have any other LCPL source to test.
Runs in the browser, nothing to install.


Source

[lkmiller]

504 Gateway Timeout at that link.

[eejoyce]

Originally Posted by Jadehawk

LCP DeDRM Web Application

Worked for Netgalley books. Don't have any other LCPL source to test.
Runs in the browser, nothing to install.


Source

Thanks for this - even though the webpage is down, I was able to compile the command line tool and use it for my LCPDFs. The Calibre DeDRM patch discussed in this thread works great for epubs, but doesn't seem to be able to handle the way they do PDFs now, with the actual PDF inside the LCPDF and the license info also inside the LCPDF in a separate LCPL file.