diff --git a/solution/backend/conftest.py b/solution/backend/conftest.py
index 0b4c612..ec4c4b8 100644
--- a/solution/backend/conftest.py
+++ b/solution/backend/conftest.py
@@ -2,6 +2,7 @@
 import os
 
 os.environ.setdefault("APP_ENV", "test")
+os.environ.setdefault("THUMBNAIL_CAPTURE", "0")
 
 import uuid
 
diff --git a/solution/backend/services/site_thumbnail.py b/solution/backend/services/site_thumbnail.py
index 6494a53..cb8b597 100644
--- a/solution/backend/services/site_thumbnail.py
+++ b/solution/backend/services/site_thumbnail.py
@@ -30,6 +30,10 @@ MAX_BYTES = 5 * 1024 * 1024
 # 썸네일은 재발행마다 바뀔 수 있고 주소는 그대로다 — 길게 캐시하면 옛 그림이 계속 뜬다.
 CACHE_CONTROL = "public, max-age=60, must-revalidate"
 
+CAPTURE_ENV = "THUMBNAIL_CAPTURE"
+CAPTURE_VIEWPORT = {"width": 1280, "height": 800}
+CAPTURE_TIMEOUT_MS = 30_000
+
 
 # ── 썸네일 전용 저장소 ────────────────────────────────────────────────────────
 _BASE_ENV = "THUMBNAIL_BLOB_BASE_URL"   # https://<계정>.blob.core.windows.net/<컨테이너>
@@ -121,6 +125,30 @@ async def _fetch(url: str) -> tuple[bytes, str, str] | None:
     return data, content_type, ext
 
 
+def capture_enabled() -> bool:
+    return os.environ.get(CAPTURE_ENV, "1").strip() != "0"
+
+
+async def _capture(url: str) -> tuple[bytes, str, str] | None:
+    try:
+        from playwright.async_api import async_playwright
+
+        async with async_playwright() as pw:
+            browser = await pw.chromium.launch(headless=True)
+            try:
+                page = await browser.new_page(viewport=CAPTURE_VIEWPORT)
+                await page.goto(url, wait_until="networkidle", timeout=CAPTURE_TIMEOUT_MS)
+                data = await page.screenshot(type="jpeg", quality=80)
+            finally:
+                await browser.close()
+    except Exception as ex:  # noqa: BLE001
+        LOG.w(f"[thumbnail] 화면 촬영 실패(대표 사진으로 대신한다) {url}: {type(ex).__name__}: {ex}")
+        return None
+    if not data or len(data) > MAX_BYTES:
+        return None
+    return data, "image/jpeg", "jpg"
+
+
 def _upload_sync(slug: str, data: bytes, content_type: str, ext: str) -> str:
     name = blob_name(slug, ext)
     settings = ContentSettings(content_type=content_type, cache_control=CACHE_CONTROL)
@@ -145,17 +173,21 @@ def _upload_sync(slug: str, data: bytes, content_type: str, ext: str) -> str:
 
 
 async def store(slug: str, snapshot: dict, version: int | None = None) -> str | None:
-    """대표 사진을 썸네일로 올리고 공개 URL 을 돌려준다."""
+    """발행된 화면을 찍어 썸네일로 올리고 공개 URL 을 돌려준다. 못 찍으면 대표 사진을 쓴다."""
     if not is_configured():
         return None
 
-    row = site_payload.primary_media(snapshot)
-    url = str((row or {}).get("url") or "").strip()
-    if not url:
-        LOG.w(f"[thumbnail] 대표 사진이 없다 — 썸네일 없이 발행한다: {slug}")
-        return None
+    fetched = None
+    if capture_enabled():
+        fetched = await _capture(f"{site_payload.publish_origin()}/s/{slug}")
 
-    fetched = await _fetch(url)
+    if fetched is None:
+        row = site_payload.primary_media(snapshot)
+        url = str((row or {}).get("url") or "").strip()
+        if not url:
+            LOG.w(f"[thumbnail] 대표 사진이 없다 — 썸네일 없이 발행한다: {slug}")
+            return None
+        fetched = await _fetch(url)
     if fetched is None:
         return None
     data, content_type, ext = fetched
diff --git a/solution/backend/tests/test_site_thumbnail.py b/solution/backend/tests/test_site_thumbnail.py
index 66f442d..9df4a24 100644
--- a/solution/backend/tests/test_site_thumbnail.py
+++ b/solution/backend/tests/test_site_thumbnail.py
@@ -115,6 +115,39 @@ async def test_사이트_디렉터리_밖의_thumbs_에_올린다(blob, monkeypa
 
 
 # ── 발행 경로와의 배선 ──────────────────────────────────────────────────── 아래 두 건은 "발행이 썸네일에 매달리지 않는가" 를 본다.
+async def test_발행된_화면을_찍어_올린다(blob, monkeypatch):
+    shots = []
+
+    async def _capture(url):
+        shots.append(url)
+        return b"shot", "image/jpeg", "jpg"
+
+    monkeypatch.setenv(site_thumbnail.CAPTURE_ENV, "1")
+    monkeypatch.setattr(site_thumbnail, "_capture", _capture)
+    snapshot = _snapshot({"media_id": "m1", "url": "https://cdn.test/front.jpg", "unit_id": None})
+
+    await site_thumbnail.store("butter", snapshot, 4)
+
+    from services import site_payload
+
+    assert shots == [f"{site_payload.publish_origin()}/s/butter"]
+    assert blob.uploads[f"{azure_static.DEFAULT_PREFIX}/thumbs/butter.jpg"]["body"] == b"shot"
+
+
+async def test_촬영에_실패하면_대표_사진을_쓴다(blob, monkeypatch):
+    async def _capture(url):
+        return None
+
+    monkeypatch.setenv(site_thumbnail.CAPTURE_ENV, "1")
+    monkeypatch.setattr(site_thumbnail, "_capture", _capture)
+    _transport(monkeypatch, lambda req: httpx.Response(200, headers={"content-type": "image/jpeg"}, content=b"photo"))
+    snapshot = _snapshot({"media_id": "m1", "url": "https://cdn.test/front.jpg", "unit_id": None})
+
+    await site_thumbnail.store("butter", snapshot, 5)
+
+    assert blob.uploads[f"{azure_static.DEFAULT_PREFIX}/thumbs/butter.jpg"]["body"] == b"photo"
+
+
 async def test_발행하면_사이트에_썸네일_주소가_남는다(auth_headers, client, db_engine, monkeypatch):
     from services import build_service
     from tests.test_build_publish import _approved_media, _place, _run, _verified_facts