KOReader

koreader.rocks ↗

An open-source reader for several e-ink platforms

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SI Score: 75/100
Pricing: Not confirmed
Free plan: Not confirmed
Sign-up required: Not confirmed

ebook-readers e-ink

Ask SI about KOReader

Answers use saved listing facts and recorded sources.

What it does

KOReader reads multiple ebook and document formats on supported e-readers and Android devices. Its public repository documents the application and device scope.

Check your exact device model and installation instructions before choosing KOReader. It is useful when you want a consistent reader for personal files on compatible e-ink hardware. Installing an alternative reading app is different from obtaining permission to open a retailer’s protected book.

Its PDF tools can reflow scanned pages through K2pdfopt, while calibre integration can receive books wirelessly or browse an OPDS library.

Strengths

Several document and ebook formats
Support for multiple e-ink device families

Best for

Reading personal files on compatible e-readers

Sources

GitHub - koreader/koreader: An ebook reader application supporting PDF, DjVu, EPUB, FB2 and many more formats, running on Cervantes, Kindle, Kobo, PocketBook and Android devices · GitHub (Oct 26, 2026)

SI Score

75/100

#62 in Books & Reading

Based on published information. No hands-on task test.

Method 2.0 · Published source review Assessed Oct 26, 2026Score ceiling for this evidence: 84/100.

Product usefulness 75

Evidence

The README documents fixed/reflowable file inputs, model-specific installation routes and layout/OPDS controls, with explicit device scope and licensing. This supports selecting an alternative personal-file reader.

Limits: AI review of saved source passages. No hands-on test, human approval or automatic-provider checker receipt.

Source links and check dates are in Sources and checks below.

Separate website checks

These checks do not add points to the SI Score. They inspect the website's HTML, not the product in use.

Basic website checksunknown

No check recorded.

HTML accessibility checksunknown

No check recorded.

Homepage HTML responseunknown

No check recorded.

Trackers in homepage HTMLunknown

No check recorded.

Page date hintsunknown

No check recorded.

Policy links do not verify a company's conduct. An HTML response time is not application speed. Tracker and accessibility checks miss behavior after page load. Copyright dates do not prove product upkeep.

How the SI Score works →

Unconfirmed details may be unassessed, absent from the pages checked or temporarily unreadable. A missing price does not mean the service is free.

Sources and checks

Supporting pages for product usefulness, site facts, prices and separate website checks. Each record keeps its own date. Reading a page does not establish how well the product performs in use.

github.com/koreader/koreader
- PlatformsAI reading, not confirmedChecked Oct 26, 2026
  The README explicitly names Android and Linux computers, alongside specific e-ink families.
- Open sourceAI reading, not confirmedChecked Oct 26, 2026
  The official repository identifies AGPL-3.0 licensing.
- Product usefulness evidenceChecked Oct 26, 2026

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