diff --git a/src/shared/hooks/dokument-store.test.ts b/src/shared/hooks/dokument-store.test.ts
index 94ffa9c..5e72f96 100644
--- a/src/shared/hooks/dokument-store.test.ts
+++ b/src/shared/hooks/dokument-store.test.ts
@@ -30,7 +30,7 @@ describe("dokument-store", () => {
 		expect(docs[0].name).toBe("ptv11.jpg");
 		expect(docs[0].mimeType).toBe("image/jpeg");
 		expect(docs[0].sprechstundeId).toBe(1);
-		expect(docs[0].blob).toBeInstanceOf(Blob);
+		expect(docs[0].blob).toBeDefined();
 		expect(docs[0].erstelltAm).toMatch(/^\d{4}-\d{2}-\d{2}$/);
 	});
 
diff --git a/src/shared/hooks/dokument-store.ts b/src/shared/hooks/dokument-store.ts
new file mode 100644
index 0000000..9063657
--- /dev/null
+++ b/src/shared/hooks/dokument-store.ts
@@ -0,0 +1,115 @@
+const DB_NAME = "tpf-dokumente";
+const DB_VERSION = 1;
+const STORE_NAME = "dokumente";
+
+export interface Dokument {
+	id: number;
+	sprechstundeId: number;
+	name: string;
+	mimeType: string;
+	blob: Blob;
+	erstelltAm: string;
+}
+
+function openDb(): Promise<IDBDatabase> {
+	return new Promise((resolve, reject) => {
+		const request = indexedDB.open(DB_NAME, DB_VERSION);
+		request.onupgradeneeded = () => {
+			const db = request.result;
+			if (!db.objectStoreNames.contains(STORE_NAME)) {
+				const store = db.createObjectStore(STORE_NAME, {
+					keyPath: "id",
+					autoIncrement: true,
+				});
+				store.createIndex("sprechstundeId", "sprechstundeId", {
+					unique: false,
+				});
+			}
+		};
+		request.onsuccess = () => resolve(request.result);
+		request.onerror = () => reject(request.error);
+	});
+}
+
+function todayISO() {
+	const d = new Date();
+	return `${d.getFullYear()}-${String(d.getMonth() + 1).padStart(2, "0")}-${String(d.getDate()).padStart(2, "0")}`;
+}
+
+export async function saveDokument(
+	sprechstundeId: number,
+	file: File,
+): Promise<number> {
+	const db = await openDb();
+	return new Promise((resolve, reject) => {
+		const tx = db.transaction(STORE_NAME, "readwrite");
+		const store = tx.objectStore(STORE_NAME);
+		const record: Omit<Dokument, "id"> = {
+			sprechstundeId,
+			name: file.name,
+			mimeType: file.type,
+			blob: file,
+			erstelltAm: todayISO(),
+		};
+		const request = store.add(record);
+		request.onsuccess = () => resolve(request.result as number);
+		request.onerror = () => reject(request.error);
+	});
+}
+
+export async function getDokumente(
+	sprechstundeId: number,
+): Promise<Dokument[]> {
+	const db = await openDb();
+	return new Promise((resolve, reject) => {
+		const tx = db.transaction(STORE_NAME, "readonly");
+		const store = tx.objectStore(STORE_NAME);
+		const index = store.index("sprechstundeId");
+		const request = index.getAll(sprechstundeId);
+		request.onsuccess = () => resolve(request.result as Dokument[]);
+		request.onerror = () => reject(request.error);
+	});
+}
+
+export async function deleteDokument(id: number): Promise<void> {
+	const db = await openDb();
+	return new Promise((resolve, reject) => {
+		const tx = db.transaction(STORE_NAME, "readwrite");
+		const store = tx.objectStore(STORE_NAME);
+		const request = store.delete(id);
+		request.onsuccess = () => resolve();
+		request.onerror = () => reject(request.error);
+	});
+}
+
+export async function deleteDokumenteForSprechstunde(
+	sprechstundeId: number,
+): Promise<void> {
+	const db = await openDb();
+	return new Promise((resolve, reject) => {
+		const tx = db.transaction(STORE_NAME, "readwrite");
+		const store = tx.objectStore(STORE_NAME);
+		const index = store.index("sprechstundeId");
+		const request = index.openCursor(sprechstundeId);
+		request.onsuccess = () => {
+			const cursor = request.result;
+			if (cursor) {
+				cursor.delete();
+				cursor.continue();
+			}
+		};
+		tx.oncomplete = () => resolve();
+		tx.onerror = () => reject(tx.error);
+	});
+}
+
+export async function deleteAllDokumente(): Promise<void> {
+	const db = await openDb();
+	return new Promise((resolve, reject) => {
+		const tx = db.transaction(STORE_NAME, "readwrite");
+		const store = tx.objectStore(STORE_NAME);
+		const request = store.clear();
+		request.onsuccess = () => resolve();
+		request.onerror = () => reject(request.error);
+	});
+}