diff --git a/src/worker.js b/src/worker.js
index bd202af..4a3dd72 100644
--- a/src/worker.js
+++ b/src/worker.js
@@ -8,6 +8,8 @@ import { resolve as resolveConverter } from './converters/registry.js';
 import { registerImageConverters } from './converters/image.js';
 import { registerImageToPdfConverter } from './converters/imageToPdf.js';
 import { registerDocumentConverters } from './converters/document.js';
+import { registerIcoConverter } from './converters/ico.js';
+import { registerHeicConverter } from './converters/heic.js';
 import { findPendingJobs, markProcessing, markDone, markFailed } from './jobs/jobRepository.js';
 
 const JOB_TIMEOUT_MS = 60000;
@@ -33,7 +35,10 @@ async function processJob(prisma, config, job) {
     }
 
     const startedAt = Date.now();
-    await withTimeout(entry.convert(inputFilePath, outputFilePath, { quality: job.quality }), JOB_TIMEOUT_MS);
+    await withTimeout(
+      entry.convert(inputFilePath, outputFilePath, { quality: job.quality, iconSize: job.iconSize }),
+      JOB_TIMEOUT_MS
+    );
     const conversionDurationSeconds = (Date.now() - startedAt) / 1000;
     const { size: outputSizeBytes } = await fs.stat(outputFilePath);
 
@@ -75,6 +80,8 @@ async function main() {
   registerImageConverters();
   registerImageToPdfConverter();
   registerDocumentConverters();
+  registerIcoConverter();
+  registerHeicConverter();
 
   startWorker(prisma, config);
   console.log(`Worker started, polling every ${config.workerPollIntervalMs}ms`);
diff --git a/test/worker.test.js b/test/worker.test.js
index 63c42e3..4cae369 100644
--- a/test/worker.test.js
+++ b/test/worker.test.js
@@ -8,6 +8,7 @@ import { loadConfig } from '../src/config.js';
 import { ensureStorageDirs, uploadPath, outputPath } from '../src/storage.js';
 import { createJob, getJobByUuid, getJobErrorLog } from '../src/jobs/jobRepository.js';
 import { registerImageConverters } from '../src/converters/image.js';
+import { registerIcoConverter } from '../src/converters/ico.js';
 import { processPendingJobs } from '../src/worker.js';
 
 let prisma;
@@ -15,6 +16,7 @@ let config;
 
 beforeAll(async () => {
   registerImageConverters();
+  registerIcoConverter();
   config = { ...loadConfig(), storageDir: await fs.mkdtemp(path.join(os.tmpdir(), 'converter-worker-')) };
   await ensureStorageDirs(config);
   prisma = getPrismaClient(config);
@@ -154,4 +156,35 @@ describe('processPendingJobs', () => {
 
     expect(processedCount).toBe(2);
   });
+
+  it('processes a png -> ico job honoring iconSize', async () => {
+    const { decodeIco } = await import('icojs');
+    const uuid = 'bbbbbbbb-1111-4bbb-8bbb-bbbbbbbbbbb1';
+    const fixturePath = path.join(import.meta.dirname, 'fixtures', 'sample.png');
+    const inputFilePath = uploadPath(config, uuid, 'png');
+    await fs.copyFile(fixturePath, inputFilePath);
+    const { size: inputSizeBytes } = await fs.stat(inputFilePath);
+
+    await createJob(prisma, {
+      uuid,
+      family: 'image',
+      sourceFormat: 'png',
+      targetFormat: 'ico',
+      originalFilename: 'photo.png',
+      inputPath: `${uuid}.png`,
+      inputMimeType: 'image/png',
+      inputSizeBytes,
+      expiresAt: new Date(Date.now() + 3600 * 1000),
+      iconSize: 32,
+    });
+
+    await processPendingJobs(prisma, config);
+
+    const job = await getJobByUuid(prisma, uuid);
+    expect(job.status).toBe('done');
+
+    const outputFilePath = outputPath(config, uuid, 'ico');
+    const [image] = await decodeIco(await fs.readFile(outputFilePath), 'image/png');
+    expect(image.width).toBe(32);
+  });
 });