diff --git a/.gitignore b/.gitignore
index a086a7f..29f8cc8 100644
--- a/.gitignore
+++ b/.gitignore
@@ -19,3 +19,7 @@ node_modules/
 /playwright/.auth/
 
 /viewer/admin/admin.sqlite
+
+# release artifacts (built in CI; download from project Releases)
+/dfg-3dviewer-library.zip
+/dfg_3dviewer-dist.zip
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
new file mode 100644
index 0000000..568a58d
--- /dev/null
+++ b/.gitlab-ci.yml
@@ -0,0 +1,41 @@
+stages:
+  - build
+  - release
+
+.build-base:
+  image: node:24-bookworm
+  before_script:
+    - apt-get update -qq && apt-get install -y -qq zip
+  rules:
+    - if: $CI_COMMIT_TAG
+    - if: $CI_PIPELINE_SOURCE == "web"
+
+build-library:
+  extends: .build-base
+  stage: build
+  script:
+    - npm ci
+    - npm run build:library
+    - node ./scripts/pack-library.js
+  artifacts:
+    paths:
+      - dfg-3dviewer-library.zip
+    expire_in: 4 weeks
+
+release-library:
+  stage: release
+  image: registry.gitlab.com/gitlab-org/release-cli:latest
+  needs:
+    - job: build-library
+      artifacts: true
+  rules:
+    - if: $CI_COMMIT_TAG
+  script:
+    - echo "Publishing release $CI_COMMIT_TAG"
+  release:
+    tag_name: $CI_COMMIT_TAG
+    name: Release $CI_COMMIT_TAG
+    assets:
+      paths:
+        - path: dfg-3dviewer-library.zip
+          name: dfg-3dviewer-library.zip
diff --git a/README.md b/README.md
index 96236ae..8d5c52d 100644
--- a/README.md
+++ b/README.md
@@ -2,21 +2,36 @@
 
 Three.js-based 3D viewer. Ships as a minified bundle for `web/libraries/dfg-3dviewer/` or standalone HTML embeds.
 
-**Drupal integration** is provided by the separate [`dfg_3dviewer`](https://github.com/your-org/dfg_3dviewer) module.
+**Drupal integration** is provided by the separate [`dfg_3dviewer`](https://gitlab.nasarek.dev/rnsrk/dfg_3dviewer_drupal_module) module.
 
 ## Build
 
 ```bash
 npm install
 npm run build:library
-npm run pack:library
 ```
 
-Output:
+Output in `dist/library/`:
 
-- `dist/library/dfg_3dviewer.min.js`
-- `dist/library/assets/` — CSS, draco, IFC WASM, fonts
-- `dfg-3dviewer-library.zip` — extract to `web/libraries/dfg-3dviewer/` on Drupal
+- `dfg_3dviewer.min.js`
+- `assets/` — CSS, draco, IFC WASM, fonts
+
+For local packaging (optional):
+
+```bash
+npm run pack:library   # creates dfg-3dviewer-library.zip (gitignored)
+```
+
+## Releases
+
+Tagged pushes build `dfg-3dviewer-library.zip` in CI and attach it to a GitLab Release.
+
+```bash
+git tag v1.0.3
+git push origin v1.0.3
+```
+
+Download the zip from [Releases](https://gitlab.nasarek.dev/rnsrk/dfg_3dviewer_js_library/-/releases) and extract to `web/libraries/dfg-3dviewer/` on Drupal.
 
 ## Local development
 
@@ -28,7 +43,7 @@ npm run dev:test
 
 ## Install on Drupal
 
-1. Extract `dfg-3dviewer-library.zip` to `web/libraries/dfg-3dviewer/`
+1. Download `dfg-3dviewer-library.zip` from [Releases](https://gitlab.nasarek.dev/rnsrk/dfg_3dviewer_js_library/-/releases) and extract to `web/libraries/dfg-3dviewer/`
 2. Enable the `dfg_3dviewer` Drupal module and configure at `/admin/config/dfg_3dviewer`
 
 ## Standalone embed
diff --git a/dfg-3dviewer-library.zip b/dfg-3dviewer-library.zip
deleted file mode 100644
index e43969e..0000000
Binary files a/dfg-3dviewer-library.zip and /dev/null differ