Add Chrome extension for opening webpage datasets

.github/workflows/release.yml

@@ -12,6 +12,41 @@ concurrency:
   cancel-in-progress: false
 
 jobs:
+  chrome-extension:
+    name: Build Chrome extension
+    runs-on: ubuntu-22.04
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v7
+        with:
+          persist-credentials: false
+
+      - name: Set up Node.js
+        uses: actions/setup-node@v7
+        with:
+          node-version: "22"
+          cache: npm
+          cache-dependency-path: package-lock.json
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Build Chrome extension
+        run: npm run build:chrome-extension
+
+      - name: Upload Chrome extension workflow artifact
+        uses: actions/upload-artifact@v7
+        with:
+          name: geolibre-chrome-extension
+          path: dist/geolibre-data-opener-*.zip
+          if-no-files-found: error
+
+      - name: Attach Chrome extension to GitHub Release
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          TAG: ${{ github.event.release.tag_name }}
+        run: gh release upload "$TAG" dist/geolibre-data-opener-*.zip --clobber
+
   build:
     name: Build ${{ matrix.name }}
     runs-on: ${{ matrix.os }}

docs/user-guide/adding-data.md

@@ -2,6 +2,8 @@
 
 The **Add Data** menu is the main way to bring layers into GeoLibre. It groups sources into Files, Web services, Cloud formats, 3D layers, and Databases. You can also drag files straight onto the map.
 
+To collect supported dataset links from a catalog or other webpage and open several at once, use the [GeoLibre Chrome extension](chrome-extension.md).
+
 ![Add Data menu](https://data.geolibre.app/images/geolibre-add-data-menu.webp)
 
 ## Files

docs/user-guide/chrome-extension.md

@@ -0,0 +1,31 @@
+# Chrome Extension
+
+The **Open data in GeoLibre** Chrome extension finds supported geospatial data links on the current webpage and opens the datasets you select together on one GeoLibre map.
+
+![Select webpage datasets with the GeoLibre Chrome extension](https://assets.geolibre.app/images/geolibre-chrome.webp)
+
+## Install the extension
+
+Until the extension is available from the Chrome Web Store, install it from the GeoLibre source tree:
+
+1. Download or clone the [GeoLibre repository](https://github.com/opengeos/GeoLibre).
+2. Open `chrome://extensions` in Chrome.
+3. Turn on **Developer mode**.
+4. Select **Load unpacked** and choose `extensions/geolibre-data-opener` from the repository.
+5. Pin **Open data in GeoLibre** to the Chrome toolbar for convenient access.
+
+## Open datasets from a webpage
+
+1. Visit a webpage or data catalog containing geospatial file links.
+2. Select the GeoLibre icon in the Chrome toolbar.
+3. Use **All**, **Vector**, or **Raster** to filter the discovered datasets.
+4. Check one or more datasets. Nothing is selected by default.
+5. Select **Open in GeoLibre** to load the selected datasets on the same map.
+
+The extension recognizes GeoJSON and spatial JSON, GeoParquet and Parquet, PMTiles, GeoTIFF and Cloud-Optimized GeoTIFF, ZIP archives containing GeoJSON, JSON-LD download metadata, and existing GeoLibre data links. On Source Cooperative repository pages, it also reads the embedded inventory so datasets outside the currently visible list can be selected.
+
+## Access and privacy
+
+GeoLibre fetches selected links directly, so the source server must allow cross-origin requests (CORS). Links that depend on a website login, browser session, or temporary `blob:` URL might not load in GeoLibre.
+
+The extension requests access only to the active tab when you open it. It does not store browsing history, send analytics, or run continuously in the background.

extensions/geolibre-data-opener/PRIVACY.md

@@ -0,0 +1,23 @@
+# Privacy policy — Open data in GeoLibre
+
+Last updated: August 15, 2026
+
+Open data in GeoLibre does not collect, retain, sell, or transmit personal
+information, browsing history, page contents, or usage analytics.
+
+The extension uses Chrome's `activeTab` permission to inspect links and
+structured metadata on the current page only after the user clicks the
+extension's toolbar icon. Inspection happens locally in the browser. Results
+are held in memory only while the popup is open.
+
+When the user chooses **Open in GeoLibre**, the selected public dataset and
+style URLs are placed in the query string of a new `https://web.geolibre.app/`
+tab. The extension does not fetch or upload the datasets itself. GeoLibre then
+requests the selected URLs directly from their original servers, subject to
+those servers' privacy policies and CORS configuration.
+
+The extension uses no remote code, advertising, analytics, tracking pixels,
+cookies, accounts, or extension storage.
+
+Questions may be submitted through the GeoLibre repository:
+<https://github.com/opengeos/GeoLibre/issues>.

extensions/geolibre-data-opener/README.md

@@ -0,0 +1,46 @@
+# Open data in GeoLibre
+
+A Manifest V3 Chrome extension that finds supported geospatial dataset links on
+the current page and opens selected files together in GeoLibre using repeated
+`data` query parameters.
+
+## Install locally
+
+1. Open `chrome://extensions`.
+2. Enable **Developer mode**.
+3. Choose **Load unpacked**.
+4. Select this `extensions/geolibre-data-opener` directory.
+
+The extension requests `activeTab` and `scripting` only. It scans a page after
+you click its toolbar icon and does not retain page contents or browsing data.
+
+## Package for the Chrome Web Store
+
+From the repository root, run:
+
+```bash
+npm run build:chrome-extension
+```
+
+The versioned upload ZIP is written to `dist/`. Store listing copy and
+permission explanations are in `STORE_LISTING.md`; the publishable privacy
+policy source is in `PRIVACY.md`. The policy must be hosted at a public URL
+before submitting the listing.
+
+## Discovery
+
+The scanner recognizes GeoJSON/JSON, GeoParquet/Parquet, PMTiles, GeoTIFF/COG,
+and ZIP links in anchors, linked resources, selected data attributes, and
+schema.org JSON-LD `contentUrl`/`downloadUrl` fields. Existing GeoLibre deep
+links are unpacked, and a neighboring `name.style.json` or
+`name.geolibre.style.json` link is paired with the matching dataset.
+
+Source Cooperative repository pages receive additional handling: the extension
+reads the complete embedded file inventory even when the visible table is
+virtualized, canonicalizes links to `data.source.coop`, and removes duplicate
+page/download links. The popup can filter discovered files by vector or raster
+type without changing the current selection.
+
+Remote servers must allow GeoLibre to fetch the selected URLs through CORS.
+Authenticated, `blob:`, browser-internal, and session-bound links cannot be
+transferred to the GeoLibre tab.

extensions/geolibre-data-opener/STORE_LISTING.md

@@ -0,0 +1,47 @@
+# Chrome Web Store listing
+
+## Name
+
+Open data in GeoLibre
+
+## Summary
+
+Find geospatial datasets on a webpage and open selected files together in GeoLibre.
+
+## Detailed description
+
+Open data in GeoLibre turns dataset catalogs, documentation pages, and project
+websites into launch points for an interactive map.
+
+Click the extension icon to find supported data links on the current page,
+filter them by vector or raster type, choose the files you need, and open them
+together in GeoLibre. Supported links include GeoJSON, GeoParquet, PMTiles,
+Cloud-Optimized GeoTIFF, and ZIP archives containing GeoJSON.
+
+The extension also reads schema.org download metadata, understands existing
+GeoLibre links, pairs matching GeoLibre style files, and discovers the complete
+file inventory on virtualized Source Cooperative repository pages.
+
+Privacy is deliberately narrow: the extension scans only the active page after
+you click it. It stores no browsing data, runs no analytics, and requests no
+permanent access to websites.
+
+Dataset servers must allow browser access through CORS. Authenticated,
+session-bound, and `blob:` links cannot be transferred to the GeoLibre tab.
+
+## Category
+
+Developer Tools
+
+## Language
+
+English
+
+## Permission justification
+
+- `activeTab`: grants temporary access to the page only after the user invokes
+  the extension, so its dataset links can be inspected.
+- `scripting`: injects the local, packaged dataset scanner into that active tab.
+
+The extension does not request host permissions, storage, browsing history,
+downloads, cookies, or remote code.

extensions/geolibre-data-opener/manifest.json

@@ -0,0 +1,25 @@
+{
+  "manifest_version": 3,
+  "name": "Open data in GeoLibre",
+  "description": "Find geospatial datasets on the current page and open the selected files together in GeoLibre.",
+  "version": "0.1.0",
+  "minimum_chrome_version": "105",
+  "permissions": ["activeTab", "scripting"],
+  "action": {
+    "default_title": "Open data in GeoLibre",
+    "default_popup": "popup.html",
+    "default_icon": {
+      "16": "icons/geolibre-16.png",
+      "32": "icons/geolibre-32.png"
+    }
+  },
+  "icons": {
+    "16": "icons/geolibre-16.png",
+    "32": "icons/geolibre-32.png",
+    "48": "icons/geolibre-48.png",
+    "128": "icons/geolibre-128.png"
+  },
+  "content_security_policy": {
+    "extension_pages": "script-src 'self'; object-src 'self'"
+  }
+}