# kekingcn/kkFileView

Universal File Online Preview Project based on Spring-Boot

Repository: https://github.com/kekingcn/kkFileView
Canonical: https://ross.abutalabs.com/products/kkfileview
Homepage: https://kkview.cn
Language: Java
License Family: other
Topics: fileview, kkfileview, office-view, fileviewer, docx, java, office, pdf, word
Last push: 2026-08-25T01:58:47+00:00

## Health v2 (maintenance only)
Score: 95/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 86, longevity 100
- inputs: {"age_days": 3186, "days_push": 9, "days_rel": 19, "gap_med": 90, "n_releases_24m": 4}
- flags: no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 14595, forks 3310 (observed 2026-08-28T04:11:07.334513+00:00)

## What it is
kkFileView is a self-hosted Spring Boot application that provides online preview of a very wide range of file formats, including Office documents, PDFs, images, CAD and 3D models, archives, audio, and video. It exposes a REST API and an extensible preview interface so it can be integrated into other systems or extended for new file types.

## Use cases
- preview office documents in the browser without downloading them
- self-host a file preview service for docx, xlsx, and pptx files
- render pdf and ofd documents online in a web app
- preview cad drawings like dwg and dxf in a browser
- show 3d model files such as stl and gltf to users
- preview images, audio, and video files from a web application
- add file preview to an existing system via REST API

## When to choose
- you need a ready-made, self-hosted service that previews many file formats with minimal setup
- you want to integrate document preview into your app through a REST API
- you need broad format coverage including office, cad, 3d, archives, and media in one tool

## When to avoid
- you need a client-side JavaScript preview library embedded directly in your frontend
- you require a permissively licensed dependency and cannot accept missing/unclear licensing
- you only need to preview one or two simple formats and a lighter-weight solution would suffice

## Facets
- artifact type: application
- maturity: active
- function: pdf, file-system, http-server, web-framework, image-processing, video-processing, audio-processing
- domain: web-development, files, pdf, self-hosted, developer-tools
- platform: jvm, self-hosted, cross-platform
- tags: file-preview, online-preview, office-documents, spring-boot, document-viewer, cad-preview, 3d-models, docker, web-server

## Member repositories
- kekingcn/kkFileView (main) score 95

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:11:07.334513+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 2026-08-29T17:12:27.637592+00:00, confidence not recorded.
  - readme: https://github.com/kekingcn/kkFileView (fetched 2026-08-28T04:11:07.334513+00:00, sha 5ff850e78adb)
  - homepage: https://kkview.cn (fetched 2026-08-29T08:05:43.645981+00:00, sha 1745f1b3aa36)
- Data as of 2026-08-30T08:39:29.467469+00:00.