# gotson/komga

Media server for comics/mangas/BDs/magazines/eBooks with API, OPDS, Kobo Sync and KOReader Sync support

Repository: https://github.com/gotson/komga
Canonical: https://ross.abutalabs.com/products/komga
Homepage: https://komga.org
Language: Kotlin
License: MIT
License Family: permissive
Topics: kotlin, spring-boot, ddd, api, comics, docker, domain-driven-design, opds, opds-feed, manga, kobo, koreader-sync
Last push: 2026-08-17T07:40:49+00:00

## Health v2 (maintenance only)
Score: 98/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 98, release rhythm 97, longevity 100
- inputs: {"age_days": 2582, "days_push": 16, "days_rel": 21, "gap_med": 13.0, "n_releases_24m": 35}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 6604, forks 397 (observed 2026-08-28T04:09:45.649803+00:00)

## What it is
Komga is a self-hosted media server for comics, mangas, BDs, magazines and eBooks (CBZ/CBR, EPUB, PDF). It provides a responsive web UI, webreader, user management, metadata editing, a REST API, and OPDS/Kobo/KOReader sync support.

## Use cases
- self-host a server for my comic and manga collection
- read CBZ and CBR comics in a browser webreader
- serve EPUB and PDF ebooks to my Kobo eReader
- sync reading progress with KOReader
- organize my book library with collections and read lists
- manage multiple users with per-library access restrictions
- access my media library from tablet or phone via OPDS

## When to choose
- you want a self-hosted server for comics, manga, magazines or eBooks
- you need OPDS, Kobo Sync or KOReader Sync integration
- you want multi-user libraries with access control and metadata management
- you run a NAS or Docker host and want a Java-based media server

## When to avoid
- you need a media server for video or audio content
- you want a fully managed cloud service rather than self-hosting
- you need a lightweight client-only reader without a server

## Facets
- artifact type: application
- maturity: active
- function: http-server, api-framework, search-engine, auth, file-system
- domain: media, self-hosted, web-development, developer-tools
- platform: self-hosted, cross-platform, jvm, windows
- tags: media-server, comics, manga, ebooks, opds, kobo-sync, koreader-sync, webreader, library-management, kotlin, spring-boot, docker, web-server, linux, macos

## Member repositories
- gotson/komga (main) score 98

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:09:45.649803+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T17:43:31.598524+00:00, confidence not recorded.
  - readme: https://github.com/gotson/komga (fetched 2026-08-28T04:09:45.649803+00:00, sha 5c398654e9e8)
  - homepage: https://komga.org (fetched 2026-08-29T08:39:51.487132+00:00, sha 36bca3536470)
  - site_page: https://komga.org/docs/introduction (fetched 2026-08-29T08:39:51.489382+00:00, sha d48a4b27188e)
  - site_page: https://komga.org/docs/openapi/komga-api (fetched 2026-08-29T08:39:51.490952+00:00, sha b3e29c4ffdd9)
  - site_page: https://komga.org/docs/category/installation (fetched 2026-08-29T08:39:51.492723+00:00, sha 4e3a1588097e)
  - site_page: https://komga.org/docs/category/guides (fetched 2026-08-29T08:39:51.494398+00:00, sha f7bc1588d70d)
- Data as of 2026-08-30T08:39:29.467469+00:00.