netlify-blobs

Netlify Blobs

Netlify Blobs is zero-config object storage available from any Netlify compute (functions, edge functions, framework server routes). No provisioning required.

npm install @netlify/blobs

Getting a Store

import { getStore } from "@netlify/blobs";

const store = getStore({ name: "my-store" });

// Use "strong" consistency when you need immediate reads after writes
const store = getStore({ name: "my-store", consistency: "strong" });

CRUD Operations

These are the only store methods. Do not invent others.

Create / Update

// String or binary data
await store.set("key", "value");
await store.set("key", fileBuffer);

// With metadata
await store.set("key", data, {
  metadata: { contentType: "image/png", uploadedAt: new Date().toISOString() },
});

// JSON data
await store.setJSON("key", { name: "Example", count: 42 });

Read

// Text (default)
const text = await store.get("key");                    // string | null

// Typed retrieval
const json = await store.get("key", { type: "json" });  // object | null
const stream = await store.get("key", { type: "stream" });
const blob = await store.get("key", { type: "blob" });
const buffer = await store.get("key", { type: "arrayBuffer" });

// With metadata
const result = await store.getWithMetadata("key");
// { data: any, etag: string, metadata: object } | null

// Metadata only (no data download)
const meta = await store.getMetadata("key");
// { etag: string, metadata: object } | null

Delete

await store.delete("key");

List

const { blobs } = await store.list();
// blobs: [{ etag: string, key: string }, ...]

// Filter by prefix
const { blobs } = await store.list({ prefix: "uploads/" });

Store Types

• Site-scoped (getStore()): Persist across all deploys. Use for most cases.
• Deploy-scoped (getDeployStore()): Tied to a specific deploy lifecycle.

Limits

Limit	Value
Max object size	5 GB
Store name max length	64 bytes
Key max length	600 bytes

Local Development

Local dev uses a sandboxed store (separate from production). For Vite-based projects, install @netlify/vite-plugin to enable local Blobs access. Otherwise, use netlify dev.

Common error: "The environment has not been configured to use Netlify Blobs" — install @netlify/vite-plugin or run via netlify dev.