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github-actions[bot] edited this page Nov 11, 2026
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GZreader is KOReader trimmed down to reading, with the ZenOS interface and a built-in connection to your self-hosted Grimmory book server, packaged for older Kindles (Kindle 2, Keyboard, DX, 4, Touch, Paperwhite 3 and newer touch Kindles) and, as test builds, the Nook 1st Edition and Nook Simple Touch.
| What's in GZreader | What the package contains, and what was left out |
| Device compatibility | Which Kindles and Nooks run it, and what has been tested |
| Feature overview | Everything it does, with links to the details |
| Changes from KOReader and ZenOS | What GZreader does differently |
| Installing | Which package, step by step, for each device |
| Jailbreaking and rooting | Before installing: jailbreak the Kindle or root the Nook |
- Using GZreader: the quick panel, keys, the 5-way, touch
- Setup page and connections: Grimmory, single sign-on, copying connections, Cloudflare
- Grimmory library and Grimmory sync: browsing, downloads, progress, bookmarks, highlights
- Home and bookshelves, Picture books
- Notes, Calendar, Music, Audiobooks and read aloud
- Sync with a computer (Kindles without Wi‑Fi), Wi‑Fi: on, off, auto
- Updates and test builds, Privacy and diagnostics
- Nooks: Nook 1st Edition, Nook Simple Touch
- Under the hood: Performance, Building
Downloads: the latest release. Changes: the changelog. Problems: open an issue with the diagnostic log, or send it from the Kindle (how).
This wiki is published from the wiki/ folder of the repository: edit it there.
Installing
- Installing
- Jailbreaking and rooting
-
Kindle 2, 3, DX ·
kindle-legacy -
Kindle 4, Touch ·
kindle -
Touch Kindles, firmware ≤ 5.16.2 ·
kindlepw2 -
Touch Kindles, firmware 5.16.3+ ·
kindlehf -
Nook 1st Edition ·
nook-1st-edition -
Nook Simple Touch ·
nook - Updating and uninstalling
Using it
- Using GZreader
- Setup page and connections
- Grimmory library
- Grimmory sync
- Home and bookshelves
- Picture books
- Notes
- Calendar
- Music
- House (Home Assistant)
- Audiobooks and read aloud
- Sync with a computer
- Wi‑Fi: on, off, auto
- Updates and test builds
- Privacy and diagnostics
- Nook 1st Edition
- Nook Simple Touch
Under the hood