diff --git a/test/api/endToEnd.test.js b/test/api/endToEnd.test.js
new file mode 100644
index 0000000..6d72f77
--- /dev/null
+++ b/test/api/endToEnd.test.js
@@ -0,0 +1,89 @@
+import { describe, it, expect, beforeAll, afterAll, beforeEach } from 'vitest';
+import request from 'supertest';
+import fs from 'node:fs/promises';
+import path from 'node:path';
+import os from 'node:os';
+import { Document, Paragraph, TextRun, Packer } from 'docx';
+import { createApp } from '../../src/app.js';
+import { getPool, closePool } from '../../src/db.js';
+import { loadConfig } from '../../src/config.js';
+import { ensureStorageDirs } from '../../src/storage.js';
+import { processPendingJobs } from '../../src/worker.js';
+
+let app;
+let pool;
+let config;
+
+beforeAll(async () => {
+  config = { ...loadConfig(), storageDir: await fs.mkdtemp(path.join(os.tmpdir(), 'converter-e2e-')) };
+  await ensureStorageDirs(config);
+  pool = getPool(config);
+  app = createApp(config, pool);
+});
+
+afterAll(async () => {
+  await closePool();
+  await fs.rm(config.storageDir, { recursive: true, force: true });
+});
+
+beforeEach(async () => {
+  await pool.query('DELETE FROM conversion_jobs');
+});
+
+async function waitForDone(id, maxAttempts = 20) {
+  for (let attempt = 0; attempt < maxAttempts; attempt += 1) {
+    await processPendingJobs(pool, config);
+    const response = await request(app).get(`/api/jobs/${id}`);
+    if (response.body.status === 'done' || response.body.status === 'failed') {
+      return response.body;
+    }
+  }
+  throw new Error(`Job ${id} did not finish after ${maxAttempts} worker passes`);
+}
+
+describe('end-to-end: image family', () => {
+  it('uploads a PNG, converts it to WebP, and downloads the result', async () => {
+    const fixturePath = path.join(import.meta.dirname, '..', 'fixtures', 'sample.png');
+
+    const uploadResponse = await request(app)
+      .post('/api/jobs')
+      .field('targetFormats', JSON.stringify(['webp']))
+      .attach('files', fixturePath, 'photo.png');
+
+    const { id } = uploadResponse.body.jobs[0];
+    const finalStatus = await waitForDone(id);
+    expect(finalStatus.status).toBe('done');
+
+    const downloadResponse = await request(app).get(`/api/jobs/${id}/download`);
+    expect(downloadResponse.status).toBe(200);
+    expect(downloadResponse.headers['content-type']).toBe('image/webp');
+    expect(downloadResponse.headers['content-disposition']).toContain('photo.png');
+  }, 20000);
+});
+
+describe('end-to-end: document family', () => {
+  it('uploads a DOCX, converts it to PDF, and downloads the result', async () => {
+    const doc = new Document({
+      sections: [{ children: [new Paragraph({ children: [new TextRun('End to end fixture text')] })] }],
+    });
+    const buffer = await Packer.toBuffer(doc);
+    const docxPath = path.join(config.storageDir, 'e2e-fixture.docx');
+    await fs.writeFile(docxPath, buffer);
+
+    const uploadResponse = await request(app)
+      .post('/api/jobs')
+      .field('targetFormats', JSON.stringify(['pdf']))
+      .attach('files', docxPath, 'report.docx');
+
+    const { id } = uploadResponse.body.jobs[0];
+    const finalStatus = await waitForDone(id);
+    expect(finalStatus.status).toBe('done');
+
+    const downloadResponse = await request(app).get(`/api/jobs/${id}/download`);
+    expect(downloadResponse.status).toBe(200);
+    expect(downloadResponse.headers['content-type']).toBe('application/pdf');
+    expect(downloadResponse.headers['content-disposition']).toContain('report.docx');
+
+    await fs.unlink(docxPath);
+  }, 20000);
+});