Calibre plugins directory: complete list by category
A comprehensive directory of every Calibre plugin — metadata sources, device integrations, format converters, library management tools, and more.
Content Type
Tool Guide
Best e-reader for students: study smarter
How students can use e-readers for textbooks, academic papers, and note-taking — plus the best models for campus life.
Stardict universal dictionaries for koreader & boox
Open-source stardict dictionary format compatible with koreader, boox, and other android-based e-readers.
SDR-Cleaner: remove useless Kindle sdr folders in one click
Learn how to clean up orphaned sdr folders from a Kindle with sdr-Cleaner, a free tool that safely removes clutter without touching books.
Best Calibre plugins: 10 essential tools for power users
Supercharge Calibre with the best plugins. Covers DeDRM, Kobo Utilities, Find Duplicates, Quality Check, EpubMerge, Count Pages, and more — with installati.
Readwise: automatically sync Kindle highlights to a notes app
Readwise captures every Kindle highlight and syncs them to Notion, Obsidian, Roam, and more. The essential tool for readers who take notes seriously.
ReaderBackdrop: free Kindle screensaver wallpapers
Download free, e-ink-optimized wallpapers for Kindle Paperwhite, Oasis, and Scribe.
PocketBook tools and cloud services: get the most from it
Pocketbook offers cloud sync, desktop apps, and unique tools like readrate and text-to-speech. complete guide to the pocketbook ecosystem.
Pandoc for ebooks: convert anything to EPUB with one command
Learn to use Pandoc, the universal document converter, to turn Markdown, Word, and HTML files into polished EPUB ebooks.
PageEdit guide: the free ePub editor that actually works
A hands-on walkthrough of PageEdit, the open-source ePub editor. Learn to fix formatting, clean up converted files, and polish an ebooks.
Multilingual dictionaries for e-readers: Japanese, French, German
Free multilingual dictionaries for language learners — japanese-english, french-english, german-english, and more. works on kindle, kobo, and boox.
NickelMenu and Plato for Kobo: beyond defaults
Nickelmenu adds custom menus to a Kobo. plato replaces the reading interface entirely. open-source tools for power kobo users.
Kindleunpack: extract and modify kindle ebook files
Kindleunpack extracts mobi, azw3, and kfx files into editable html, images, and metadata — essential for ebook repair and customization.
Kindlegen guide: amazon's official ebook converter (still useful in 2026)
Kindlegen converts html/css to kindle format. though discontinued, it's still the best tool for creating standards-compliant kindle ebooks.
Kindle previewer: amazon's official ebook preview tool guide
Kindle previewer simulates every kindle model so you can check an ebook before publishing. download, install, and usage guide.
Kindle maintenance tools: SDR cleaner and cover fixer
Three essential kindle maintenance tools — clean up sdr folders, format clippings, and fix broken ebook covers.
Kindle Comic Converter: turn comics into e-reader files
Kcc converts cbr, cbz, and image folders into epub or mobi optimized for e-ink screens — with panel splitting and grayscale conversion.
Kepubify: convert epub to kepub for a better kobo experience
Kepub is kobo's optimized ebook format — faster page turns, reading stats, and better font handling. kepubify converts epubs in seconds.
K2pdfopt: the ultimate pdf reflow tool for e-readers
K2pdfopt optimizes pdfs for small e-reader screens — reflow columns, crop margins, ocr scanned pages, and more.
Best free fonts for e-readers: download collection
The definitive collection of free fonts for kindle, kobo, boox, and pocketbook — serif, sans-serif, specialty fonts with download links and recommendations.
50+ free ebook sites: the ultimate directory
Complete directory of 50+ legal free ebook sites organized by category: public domain classics, contemporary freebies, academic texts, comics, audiobooks.
Fix Kindle ebook cover: restore missing thumbnails
Step-by-step guide to fixing Kindle ebook covers that show as blank or generic thumbnails using the free Fix Kindle Ebook Cover tool.
5 essential ebook tools I actually use every week
The only ebook tools you really need: Calibre for library management, Sigil for editing, Kindle Comic Converter, Send to Kindle, and KOReader for advanced.
E-reader troubleshooting: common problems and fixes
Quick fixes for the most common e-reader problems — frozen screens, battery issues, sync failures, and more.
E-reader maintenance: battery care, cleaning, and longevity
Keep an e-reader running for years — proper battery charging, screen cleaning, storage, and troubleshooting tips.
EpubPress: turn open browser tabs into a single ebook
Convert multiple web articles into one clean EPUB file with EpubPress, a free browser extension. Perfect for saving research, long reads, and tutorials.
E-reader dictionary guide: Kindle, Kobo, Boox, and PocketBook
Download free dictionaries for any e-reader — 200+ dictionaries for kindle, kobo, boox, and pocketbook. english, bilingual, specialty, and how to install.
Clippings Fere: turn Kindle highlights into readable HTML
Convert a Kindle My Clippings.txt into clean, organized HTML with Clippings Fere — a free tool for managing reading notes.
Calibre-Web: build a cloud library for ebooks
Host a Calibre library on a web server with Calibre-Web. Browse, search, download, and send books to an e-reader from any browser — no USB required.
Boox tools and apps: optimize an e-ink Android device
Boox runs android — unlock its full potential with these essential tools, apps, and optimization tricks for reading, note-taking, and productivity.
Best apps to organize ebook collections in 2026
Tame a growing ebook library with these powerful management tools — from Calibre to cloud-based solutions and reader apps.
Best ebook subscription services compared in 2026
Kindle Unlimited, Kobo Plus, Scribd, Audible Plus, Libby, and Prime Reading — which ebook subscription gives you the best value for reading habits?