[Plugin] Readest: sync progress, highlights and stats between KOReader and Readest

[chrox]

Hi everyone,

chrox here. I spent years working on KOReader, and these days I work on Readest, an open-source reader for desktop, mobile and web (see my Readest thread in Reading and Management). I still read on e-ink with KOReader, so I wrote a plugin that keeps KOReader and Readest in sync. You can read on your Kobo or Kindle at night and continue on your phone the next day.

What it does

• Syncs reading progress automatically (on page turns and when you close the book), or on demand
• Syncs highlights, notes and bookmarks both ways
• Syncs KOReader reading statistics
• Readest library view: browse your Readest library in KOReader and download books from the cloud with a tap
• Upload the current book to your Readest library
• Nearby BookDrop: receive books over Wi-Fi from Readest on your phone or computer
• Built-in update check

Books are matched by KOReader's partial MD5, so the same file on both sides is recognized as the same book.

Install

1. Download Readest-<version>-1.koplugin.zip from https://github.com/readest/readest/releases/latest
2. Unzip it into KOReader's plugins folder, so you end up with koreader/plugins/readest.koplugin
3. Restart KOReader, then open Tools → Readest and sign in with your Readest account (email and password; if you signed up with Google or Apple, set a password in the Readest app first under Account)
4. Try a manual push and pull, then turn on Auto sync

KOReader 2026.07 or newer is recommended.

If you only need progress sync, Readest can also connect to a KOReader sync server (kosync) directly, with no plugin needed. Setup guide: https://github.com/readest/readest/w...reader-devices

Feedback and bug reports are welcome here or on GitHub (https://github.com/readest/readest/issues).