diff --git a/docs/development/screenshot-guide.md b/docs/development/screenshot-guide.md
index e0fa93c..7b76700 100644
--- a/docs/development/screenshot-guide.md
+++ b/docs/development/screenshot-guide.md
@@ -12,6 +12,15 @@ pip3 install playwright
 # 브라우저 다운로드 불필요 — 로컬 Chrome 사용
 ```
 
+## 테스트 계정
+
+| 항목 | 값 |
+|---|---|
+| 이메일 | `tester@bibimbap.local` |
+| 비밀번호 | `test1234!` |
+
+seed: `db/seed-dev.sql` (tester = user3)
+
 ## 실행
 
 ### 비인증 페이지만 (로그인 불필요)
@@ -25,7 +34,7 @@ python3 docs/development/screenshot-guide.py
 ### 전체 캡처 (로그인 포함 세부 화면)
 
 ```bash
-SCREENSHOT_EMAIL=user@example.com SCREENSHOT_PASSWORD=yourpw \
+SCREENSHOT_EMAIL=tester@bibimbap.local SCREENSHOT_PASSWORD='test1234!' \
     python3 docs/development/screenshot-guide.py
 ```