diff --git a/CREDITS.md b/CREDITS.md
index d73b586..bf0b23f 100644
--- a/CREDITS.md
+++ b/CREDITS.md
@@ -1,6 +1,6 @@
 # クレジット（画像・動画）
 
-## Parrot.jpg（`docs/assets/images/Parrot.jpg`）
+## Parrot.jpg（`web/assets/images/Parrot.jpg`）
 - 作者：**Contributor50**（Wikimedia Commons ユーザー）
 - 出典：https://commons.wikimedia.org/wiki/File:Parrot.jpg
 - ライセンス：**CC BY-SA 4.0**（https://creativecommons.org/licenses/by-sa/4.0/）
diff --git a/README.md b/README.md
index 3063ba1..b129d6f 100644
--- a/README.md
+++ b/README.md
@@ -4,7 +4,7 @@
 
 | 元画像                                                             | 貪欲法の可視化アニメーション                                   |
 | ------------------------------------------------------------------ | -------------------------------------------------------------- |
-| <img src="./docs/assets/images/Parrot.jpg" alt="元画像" width="360"> | <img src="./docs/assets/gifs/parrot_greedy.gif" alt="貪欲法の可視化" width="360"> |
+| <img src="./web/assets/images/Parrot.jpg" alt="元画像" width="360"> | <img src="./docs/assets/gifs/parrot_greedy.gif" alt="貪欲法の可視化" width="360"> |
 
 ## 使い方
 
@@ -67,8 +67,13 @@ python -m http.server
 
 ## ライセンス
 
-- **コード**：**MIT License**（`LICENSE` を参照）
-- **メディア（デモ用画像・動画）**：**CC BY-SA 4.0**（`CREDITS.md` および `assets/licenses/` を参照）
+- **コード**：**MIT License**（[`LICENSE`](./LICENSE) を参照）
+- **メディア（デモ用画像・動画/GIF）**：**CC BY-SA 4.0**  
+  詳細は [`CREDITS.md`](./CREDITS.md) および [`docs/assets/licenses/CC-BY-SA-4.0.txt`](./docs/assets/licenses/CC-BY-SA-4.0.txt)を参照
+
+### メディア配置
+- 画像（デモ用画像）：`web/assets/images/`
+- GIF（README 用）：`docs/assets/gifs/`
 
 ## 参考資料 / 謝辞
 
diff --git a/docs/assets/licenses/LICENSE-CC-BY-SA-4.0.txt b/docs/assets/licenses/LICENSE-CC-BY-SA-4.0.txt
index 5ce15e0..7f68f15 100644
--- a/docs/assets/licenses/LICENSE-CC-BY-SA-4.0.txt
+++ b/docs/assets/licenses/LICENSE-CC-BY-SA-4.0.txt
@@ -1,4 +1,6 @@
-This repository includes media licensed under the Creative Commons Attribution-ShareAlike 4.0 International License.
+This repository includes media licensed under CC BY-SA 4.0.
+Demo GIFs are under docs/assets/gifs/. Original images used by the web app are under web/assets/images/.
+The CC BY-SA terms apply to all media listed in CREDITS.md, regardless of location.
 Full legalcode follows (verbatim from Creative Commons).
 https://creativecommons.org/licenses/by-sa/4.0/
 
diff --git a/docs/assets/images/Parrot.jpg b/web/assets/images/Parrot.jpg
similarity index 100%
rename from docs/assets/images/Parrot.jpg
rename to web/assets/images/Parrot.jpg
diff --git a/web/js/script.js b/web/js/script.js
index 8e7fb95..c5bc874 100644
--- a/web/js/script.js
+++ b/web/js/script.js
@@ -91,7 +91,7 @@ async function onFileChange() {
 }
 
 async function fetchDefaultAsFile() {
-  const resp = await fetch("./../docs/assets/images/Parrot.jpg");
+  const resp = await fetch("./assets/images/Parrot.jpg");
   const blob = await resp.blob();
   return new File([blob], "Parrot.jpg", { type: blob.type });
 }