diff --git a/pyproject.toml b/pyproject.toml
index d9c19bb..1c4166a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "mcp-synology-filestation"
-version = "0.3.0-dev"
+version = "0.3.1"
 description = "MCP server for Synology FileStation"
 requires-python = ">=3.12"
 dependencies = [
diff --git a/src/mcp_synology_filestation/__init__.py b/src/mcp_synology_filestation/__init__.py
index 17e5532..29bb612 100644
--- a/src/mcp_synology_filestation/__init__.py
+++ b/src/mcp_synology_filestation/__init__.py
@@ -1,3 +1,3 @@
 """MCP server for Synology FileStation."""
 
-__version__ = "0.3.0-dev"
+__version__ = "0.3.1"
diff --git a/src/mcp_synology_filestation/client.py b/src/mcp_synology_filestation/client.py
index 2c06f6c..e548a7c 100644
--- a/src/mcp_synology_filestation/client.py
+++ b/src/mcp_synology_filestation/client.py
@@ -427,3 +427,63 @@ class FileStationClient:
 
         code = body.get("error", {}).get("code", 0)
         raise SynologyError(_error_message(code, api), code=code)
+
+    async def get_thumbnail_bytes(self, path: str, size: str = "large") -> bytes:
+        """Fetch a thumbnail for a file via SYNO.FileStation.Thumb.
+
+        Args:
+            path: Share-relative path to the image file.
+            size: Thumbnail size — "small", "medium", "large", or "original".
+
+        Returns:
+            Raw JPEG bytes.
+
+        Raises:
+            SynologyError: On HTTP 404 (file not found), non-200 status,
+                or DSM error in the response body.
+        """
+        api = "SYNO.FileStation.Thumb"
+        await self._ensure_initialized()
+        http = self._get_http()
+
+        if api not in self._api_cache:
+            raise SynologyError(f"API '{api}' not found.", code=102)
+
+        info = self._api_cache[api]
+        url = f"{self._base_url}/webapi/{info['path']}"
+
+        req_params: dict[str, str] = {
+            "api": api,
+            "version": "2",
+            "method": "get",
+            "path": path,
+            "size": size,
+            "rotate": "0",
+        }
+        if self._sid:
+            req_params["_sid"] = self._sid
+
+        logger.debug("DSM POST: %s/get v2 — path=%s size=%s", api, path, size)
+        resp = await http.post(url, data=req_params)
+
+        if resp.status_code == 404:
+            raise SynologyError(f"File not found: {path}", code=404)
+
+        if resp.status_code != 200:
+            raise SynologyError(
+                f"Thumbnail request failed (HTTP {resp.status_code})", code=resp.status_code
+            )
+
+        content_type = resp.headers.get("content-type", "")
+        if not content_type.startswith("image/"):
+            # DSM returned an error envelope instead of image data
+            try:
+                body = resp.json()
+                code = body.get("error", {}).get("code", 0)
+                raise SynologyError(_error_message(code, api), code=code)
+            except (ValueError, KeyError):
+                raise SynologyError(
+                    f"Unexpected response content-type: {content_type}"
+                ) from None
+
+        return resp.content
diff --git a/src/mcp_synology_filestation/tools/filestation.py b/src/mcp_synology_filestation/tools/filestation.py
index c534dd6..a2ca6fe 100644
--- a/src/mcp_synology_filestation/tools/filestation.py
+++ b/src/mcp_synology_filestation/tools/filestation.py
@@ -1138,3 +1138,118 @@ def register_filestation(
             return f"Error: {e}"
 
         return f"Deleted sharing link: {link_id}"
+
+    # ── thumbnail + favorites tools ───────────────────────────────────────
+
+    @mcp.tool()
+    async def get_thumbnail(path: str, size: str = "large"):
+        """Fetch a thumbnail for an image. Returns JSON: filename, size_bytes, content_base64."""
+        import base64
+        import json as _json
+
+        from mcp_synology_filestation.client import SynologyError
+
+        valid_sizes = {"small", "medium", "large", "original"}
+        if size not in valid_sizes:
+            return f"Error: size must be one of {sorted(valid_sizes)}"
+
+        try:
+            img_bytes = await client.get_thumbnail_bytes(path, size)
+        except SynologyError as e:
+            return f"Error: {e}"
+
+        filename = path.rsplit("/", 1)[-1]
+        return _json.dumps(
+            {
+                "filename": filename,
+                "size_bytes": len(img_bytes),
+                "content_base64": base64.b64encode(img_bytes).decode(),
+            }
+        )
+
+    @mcp.tool()
+    async def list_favorites():
+        """List all FileStation favorites. Table: name, path, type, status, real path, modified."""
+        from mcp_synology_filestation.client import SynologyError
+
+        try:
+            data = await client.request(
+                "SYNO.FileStation.Favorite",
+                "list",
+                version=2,
+                params={
+                    "offset": 0,
+                    "limit": 200,
+                    "additional": json.dumps(["real_path", "size", "time"]),
+                },
+            )
+        except SynologyError as e:
+            return f"Error: {e}"
+
+        favorites: list[dict] = data.get("favorites", [])
+        total: int = data.get("total", len(favorites))
+
+        if not favorites:
+            return "No favorites found."
+
+        rows: list[tuple[str, ...]] = []
+        for fav in favorites:
+            name = fav.get("name", "")
+            fpath = fav.get("path", "")
+            ftype = "folder" if fav.get("isdir", False) else "file"
+            status = fav.get("status", "")
+            add = fav.get("additional", {})
+            real_path = add.get("real_path", "")
+            mtime = add.get("time", {}).get("mtime")
+            rows.append((name, fpath, ftype, status, real_path, _fmt_time(mtime)))
+
+        headers = ("Name", "Path", "Type", "Status", "Real Path", "Modified")
+        col_widths = [max(len(h), *(len(r[i]) for r in rows)) for i, h in enumerate(headers)]
+
+        def _sep() -> str:
+            return "+" + "+".join("-" * (w + 2) for w in col_widths) + "+"
+
+        def _row(vals: tuple[str, ...]) -> str:
+            return "| " + " | ".join(f"{v:<{col_widths[i]}}" for i, v in enumerate(vals)) + " |"
+
+        lines = [_sep(), _row(headers), _sep()]
+        for r in rows:
+            lines.append(_row(r))
+        lines.append(_sep())
+        lines.append(f"\n{total} favorite(s)")
+
+        return "\n".join(lines)
+
+    @mcp.tool()
+    async def add_favorite(path: str, name: str):
+        """Add a path to FileStation favorites. name: display label for the favorite."""
+        from mcp_synology_filestation.client import SynologyError
+
+        try:
+            await client.request(
+                "SYNO.FileStation.Favorite",
+                "add",
+                version=2,
+                params={"path": path, "name": name, "index": -1},
+            )
+        except SynologyError as e:
+            return f"Error: {e}"
+
+        return f"Added favorite '{name}' → {path}"
+
+    @mcp.tool()
+    async def delete_favorite(path: str):
+        """Delete a FileStation favorite by path."""
+        from mcp_synology_filestation.client import SynologyError
+
+        try:
+            await client.request(
+                "SYNO.FileStation.Favorite",
+                "delete",
+                version=2,
+                params={"path": path},
+            )
+        except SynologyError as e:
+            return f"Error: {e}"
+
+        return f"Deleted favorite for {path}"