diff --git a/packages/blobs/src/server.test.ts b/packages/blobs/src/server.test.ts
index 2d0196c9a..689451fc2 100644
--- a/packages/blobs/src/server.test.ts
+++ b/packages/blobs/src/server.test.ts
@@ -554,6 +554,36 @@ test('Handles conditional writes', async () => {
   await fs.rm(directory.path, { force: true, recursive: true })
 })
 
+test('Returns ETags and handles conditional reads', async () => {
+  const directory = await tmp.dir()
+  const server = new BlobsServer({
+    directory: directory.path,
+    token,
+  })
+  const { port } = await server.start()
+  const store = getStore({
+    edgeURL: `http://localhost:${port}`,
+    name: 'my-store',
+    token,
+    siteID,
+  })
+  const key = 'conditional-key'
+  const value = 'value'
+  const metadata = { name: 'test-metadata', }
+
+  const writeResult = await store.set(key, value, { metadata })
+  const etag = writeResult.etag
+
+  expect(etag).toBeTypeOf('string')
+  expect(await store.getWithMetadata(key)).toEqual({ data: value, etag, metadata })
+  expect(await store.getMetadata(key)).toEqual({ etag, metadata })
+  expect(await store.getWithMetadata(key, { etag: '"stale-etag"' })).toEqual({ data: value, etag, metadata })
+  expect(await store.getWithMetadata(key, { etag })).toEqual({ data: null, etag, metadata })
+
+  await server.stop()
+  await fs.rm(directory.path, { force: true, recursive: true })
+})
+
 test('Deletes all blobs from a store', async () => {
   const directory = await tmp.dir()
   const server = new BlobsServer({
diff --git a/packages/blobs/src/server.ts b/packages/blobs/src/server.ts
index 0e56ab4bb..47acbd324 100644
--- a/packages/blobs/src/server.ts
+++ b/packages/blobs/src/server.ts
@@ -210,7 +210,8 @@ export class BlobsServer {
 
     this.dispatchOnRequestEvent(Operation.GET, url)
 
-    const headers: Record<string, string> = {}
+    const etag = await BlobsServer.generateETag(dataPath)
+    const headers: Record<string, string> = { etag }
 
     try {
       const rawData = await fs.readFile(metadataPath, 'utf8')
@@ -226,6 +227,10 @@ export class BlobsServer {
       }
     }
 
+    if (req.headers.get('if-none-match') === etag) {
+      return new Response(null, { headers, status: 304 })
+    }
+
     try {
       const fileStream = createReadStream(dataPath)
       const chunks: Buffer[] = []
@@ -260,9 +265,11 @@ export class BlobsServer {
       const rawData = await fs.readFile(metadataPath, 'utf8')
       const metadata = JSON.parse(rawData)
       const encodedMetadata = encodeMetadata(metadata)
+      const etag = await BlobsServer.generateETag(dataPath)
 
       return new Response(null, {
         headers: {
+          etag,
           [METADATA_HEADER_INTERNAL]: encodedMetadata ?? '',
         },
       })