One can also get the commit from github itself.
Also, see https://news.ycombinator.com/item?id=29932282 for a newer hash.
# clone the old repo noDRM/DeDRM_tools forked from
git clone https://github.com/apprenticeharper/DeDRM_tools
cd DeDRM_tools
# fetch the commit hash archive.org tells us about:
git fetch origin 8c819c71376ab76445dd79d5cf2b28b6c0c2819e
git checkout -b noDRM FETCH_HEAD
In noDRM's GitHub repo DeDRM_tools is disabled due to Readium's DMCA noticeapprenticeharper
DeDRM_tools
Python2015–2025
apprenticeharper / DeDRM_tools
DeDRM_tools
DeDRM tools for ebooks
27Distinct people
30Mentions
0Explicit recommenders
15.4KGitHub stars
What to know before exploring
What it is
DeDRM tools for ebooks
GitHub
Where it is used
No documented product use was verified in the last source check.
What people are saying
No recommendation phrase was found in the indexed comments.
No classified warning is attached to this page. Read the discussions before treating silence as approval.
Also in these discussions
No other repository is repeatedly linked in the same discussions.
This week on Hacker News
Nov 8–Nov 15 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/15/2026, 2:04:58 PM UTC.
No direct repository links were found in the indexed HN discussions over the past seven days. Older discussions are available below.
Mentions over time
HN mentions by year30 dated mentions
Observed mentions: 2015-10-16 16:16:19 UTC to 2025-10-17 00:02:33 UTC.
Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.
View mention counts and date ranges
| Period | Start (UTC) | End (exclusive, UTC) | Mentions | Submissions | Comments |
|---|---|---|---|---|---|
| 2015 | 2015-01-01 00:00:00 UTC | 2016-01-01 00:00:00 UTC | 2 | 0 | 2 |
| 2016 | 2016-01-01 00:00:00 UTC | 2017-01-01 00:00:00 UTC | 0 | 0 | 0 |
| 2017 | 2017-01-01 00:00:00 UTC | 2018-01-01 00:00:00 UTC | 2 | 0 | 2 |
| 2018 | 2018-01-01 00:00:00 UTC | 2019-01-01 00:00:00 UTC | 0 | 0 | 0 |
| 2019 | 2019-01-01 00:00:00 UTC | 2020-01-01 00:00:00 UTC | 2 | 0 | 2 |
| 2020 | 2020-01-01 00:00:00 UTC | 2021-01-01 00:00:00 UTC | 9 | 0 | 9 |
| 2021 | 2021-01-01 00:00:00 UTC | 2022-01-01 00:00:00 UTC | 8 | 0 | 8 |
| 2022 | 2022-01-01 00:00:00 UTC | 2023-01-01 00:00:00 UTC | 3 | 0 | 3 |
| 2023 | 2023-01-01 00:00:00 UTC | 2024-01-01 00:00:00 UTC | 3 | 1 | 2 |
| 2024 | 2024-01-01 00:00:00 UTC | 2025-01-01 00:00:00 UTC | 0 | 0 | 0 |
| 2025 | 2025-01-01 00:00:00 UTC | 2026-01-01 00:00:00 UTC | 1 | 0 | 1 |
From the project README
An excerpt from the repository, fetched Nov 13, 2026.
Read the project’s introduction
No Longer Maintained
I have not had the time to devote to this project in recent years that I would have liked. I am delighted to find that someone else has taken on the task of keeping the tools updated, and making releases. I shall be using noDRM's version of the tools from now on.
[Guide] How to remove DRM
Refer to Wiki Page
DeDRM_tools
DeDRM tools for ebooks
This is a repository that tracks all the scripts and other tools for removing DRM from ebooks that I could find, committed in date order as best as I could manage. (Except for the Requiem tools for Apple's iBooks, and Convert LIT for Microsoft's .lit ebooks.) This includes the tools from a time before Apprentice Alf had a blog, and continues through to when Apprentice Harper (with help) took over maintenance of the tools.
The individual scripts are now released as two plugins for calibre: DeDRM and Obok.
The DeDRM plugin handles books that use Amazon DRM, Adobe Digital Editions DRM (version 1), Barnes & Noble DRM, and some historical formats.
The Obok plugin handles Kobo DRM.
Users with calibre 5.x or later should use release 7.2.0 or later of the tools.
Users with calibe 4.x or earlier should use release 6.8.x of the tools.
For the latest Amazon KFX format, users of the calibre plugin should also install the KFX Input plugin from the standard calibre plugin menu. It's also available from the MobileRead thread here: https://www.mobileread.com/forums/showthread.php?t=291290
Note that Amazon changes the DRM for KFX files frequently. What works for KFX today might not work tomorrow.
I welcome contributions from others to improve these tools, from expanding the range of books handled, improving key retrieval, to just general bug fixes, speed improvements and UI enhancements.
I urge people to read the FAQs. But to cover the most common: Use ADE 2.0.1 to be sure not to get the new DRM scheme that these tools can't handle. Do remember to unzip the downloaded archive to get the plugin (beta versions may be just the plugin don't unzip that). You can't load the whole tools archive into calibre.
My special thanks to all those developers who have done the hard work of reverse engineering to provide the initial tools.
Apprentice Harper.
Read the full README on GitHubWhat Hacker News says
3 sourcesWhy do we use DeDRM tools or equivalent? to be able to move a file from one ereader to another, from another brand; to feel that we "own" ebooks we have "bought"; to be sure that we keep ebooks in case the booksellers goes off-market; to be able to give and ebook we bought to a few friends.
What does kindle and other proprietary DRMs offer? none of it.
What do companies adopting Readium LCP offer? all of the above.
The original https://github.com/apprenticeharper/DeDRM_tools is still open, everybody can use it, Amazon, Adobe, B&N, Kobo don't bother, so it can be used, updated without bits of Readium LCP. LCP which is moving in the right direction IMO: being able to give an ebook to a friend by simply giving the password is great.
Plus, why do some people want to keep and share with the world ebooks they had for free from a public library:
Read the rest
they totally crush the only solution which makes litterature available to everyone: if this spreads, libraries will not be able to get ebooks from major publishers anymore. Is it what they really want?