diff --git a/src/entrypoints/content/unfurlers.test.ts b/src/entrypoints/content/unfurlers.test.ts
new file mode 100644
index 0000000..7015d42
--- /dev/null
+++ b/src/entrypoints/content/unfurlers.test.ts
@@ -0,0 +1,105 @@
+import { beforeEach, describe, expect, it, vi } from "vitest";
+
+const { mockReplaceUrlInTextNodes } = vi.hoisted(() => ({
+	mockReplaceUrlInTextNodes: vi.fn(),
+}));
+
+vi.mock("./fetch", () => ({
+	client: vi.fn().mockResolvedValue({ name: "TestSpace", spaceKey: "test" }),
+}));
+
+vi.mock("./replaceUrlInTextNodes", () => ({
+	replaceUrlInTextNodes: mockReplaceUrlInTextNodes,
+}));
+
+import { gitCommitUnfurler, gitFileUnfurler } from "./unfurlers";
+
+describe("gitFileUnfurler", () => {
+	beforeEach(() => {
+		mockReplaceUrlInTextNodes.mockClear();
+	});
+
+	const createAnchor = (href: string) => {
+		const anchor = document.createElement("a");
+		anchor.href = href;
+		return anchor;
+	};
+
+	it("should build title for blob URL with filename", async () => {
+		const anchor = createAnchor(
+			"https://nulab.backlog.jp/git/NAKAMURA/hackz-nulab-26/blob/main/CLAUDE.md",
+		);
+		await gitFileUnfurler(anchor);
+		expect(mockReplaceUrlInTextNodes).toHaveBeenCalledWith(
+			anchor,
+			"[TestSpace][NAKAMURA/hackz-nulab-26] CLAUDE.md | Git",
+		);
+	});
+
+	it("should build title for tree URL", async () => {
+		const anchor = createAnchor(
+			"https://nulab.backlog.jp/git/PROJ/my-repo/tree/main/src/components",
+		);
+		await gitFileUnfurler(anchor);
+		expect(mockReplaceUrlInTextNodes).toHaveBeenCalledWith(
+			anchor,
+			"[TestSpace][PROJ/my-repo] components | Git",
+		);
+	});
+
+	it("should handle nested file paths by showing only filename", async () => {
+		const anchor = createAnchor(
+			"https://nulab.backlog.jp/git/NAKAMURA/hackz-nulab-26/blob/main/src/components/App.tsx",
+		);
+		await gitFileUnfurler(anchor);
+		expect(mockReplaceUrlInTextNodes).toHaveBeenCalledWith(
+			anchor,
+			"[TestSpace][NAKAMURA/hackz-nulab-26] App.tsx | Git",
+		);
+	});
+
+	it("should not match non-git URLs", async () => {
+		const anchor = createAnchor("https://nulab.backlog.jp/view/TEST-123");
+		await gitFileUnfurler(anchor);
+		expect(mockReplaceUrlInTextNodes).not.toHaveBeenCalled();
+	});
+
+	it("should not match git URLs without blob or tree", async () => {
+		const anchor = createAnchor(
+			"https://nulab.backlog.jp/git/PROJ/my-repo/commits",
+		);
+		await gitFileUnfurler(anchor);
+		expect(mockReplaceUrlInTextNodes).not.toHaveBeenCalled();
+	});
+});
+
+describe("gitCommitUnfurler", () => {
+	beforeEach(() => {
+		mockReplaceUrlInTextNodes.mockClear();
+	});
+
+	const createAnchor = (href: string) => {
+		const anchor = document.createElement("a");
+		anchor.href = href;
+		return anchor;
+	};
+
+	it("should build title with truncated commit hash", async () => {
+		const anchor = createAnchor(
+			"https://nulab.backlog.jp/git/NAKAMURA/hackz-nulab-26/commit/d883cf51748ad8d4d864d1143657a10a27f73e17",
+		);
+		await gitCommitUnfurler(anchor);
+		expect(mockReplaceUrlInTextNodes).toHaveBeenCalledWith(
+			anchor,
+			"[TestSpace][NAKAMURA/hackz-nulab-26] リビジョン : d883cf5174 | Git",
+		);
+	});
+
+	it("should not match non-commit git URLs", async () => {
+		const anchor = createAnchor(
+			"https://nulab.backlog.jp/git/NAKAMURA/hackz-nulab-26/blob/main/CLAUDE.md",
+		);
+		await gitCommitUnfurler(anchor);
+		expect(mockReplaceUrlInTextNodes).not.toHaveBeenCalled();
+	});
+});
diff --git a/src/entrypoints/content/unfurlers.ts b/src/entrypoints/content/unfurlers.ts
index 1a49818..ae99110 100644
--- a/src/entrypoints/content/unfurlers.ts
+++ b/src/entrypoints/content/unfurlers.ts
@@ -20,6 +20,8 @@ const DOCUMENT_ID_REGEX = "(?<documentId>[a-f0-9]{32})" as const;
 const PROJECT_KEY_REGEX = "(?<projectKey>[A-Z0-9_]+)" as const;
 const REPOSITORY_REGEX = "(?<repository>[a-z0-9-]+)" as const;
 const PULL_REQUEST_NUMBER_REGEX = "(?<number>[0-9]+)" as const;
+const GIT_FILE_PATH_REGEX = "(?<filePath>.+)" as const;
+const GIT_COMMIT_HASH_REGEX = "(?<commitHash>[a-f0-9]+)" as const;
 
 export const issueUnfurler = defineUnfurler({
 	parseUrl: (url) =>
@@ -127,3 +129,24 @@ export const pullRequestUnfurler = defineUnfurler({
 		return `[${params.projectKey}/${params.repository}#${params.number}][${pullRequest.status.name}] ${pullRequest.summary} | Pull Request`;
 	},
 });
+
+export const gitFileUnfurler = defineUnfurler({
+	parseUrl: (url) =>
+		regex(
+			`^/git/${PROJECT_KEY_REGEX}/${REPOSITORY_REGEX}/(?:blob|tree)/${GIT_FILE_PATH_REGEX}$`,
+		).exec(url.pathname)?.groups,
+	buildTitle: (params) => {
+		const fileName = params.filePath.split("/").pop();
+		return `[${params.projectKey}/${params.repository}] ${fileName} | Git`;
+	},
+});
+
+export const gitCommitUnfurler = defineUnfurler({
+	parseUrl: (url) =>
+		regex(
+			`^/git/${PROJECT_KEY_REGEX}/${REPOSITORY_REGEX}/commit/${GIT_COMMIT_HASH_REGEX}$`,
+		).exec(url.pathname)?.groups,
+	buildTitle: (params) => {
+		return `[${params.projectKey}/${params.repository}] リビジョン : ${params.commitHash.slice(0, 10)} | Git`;
+	},
+});