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Web UI

The server bundles a single-page UI at /. It is the only endpoint that does not require an API key — everything it then calls does.

Start it with Docker (see Installation) and open http://localhost:8000.

Using it

  1. Enter your API key — the value of FUIN_API_KEY — and press Save. It is kept in browser storage and sent as X-API-Key on every request.
  2. Drop an .apk onto the upload area, or click to browse.
  3. Watch progress. The UI subscribes to GET /jobs/{id}/stream and shows each stage as it happens: patching_manifest → encrypting_dex → injecting → aligning → signing → done.
  4. Download the packed APK when the job finishes.

Packed app list

Below the uploader is the list of everything packed so far, backed by GET /apps. For each app you can:

  • Download the protected APK
  • Upload a ProGuard mapping.txt to keep alongside it, and download it later
  • Delete the app, which removes both the database row and the files on disk

Old entries are cleaned up automatically after FUIN_CLEANUP_DAYS days.

Limits

Uploads larger than FUIN_MAX_UPLOAD_MB (500 MB by default) are rejected with 413. Mapping files are capped separately by FUIN_MAX_MAPPING_MB (50 MB).

The UI is a client of the REST API

Nothing in the UI is privileged. Anything it does, you can do with curl — see REST API.