UUID Generator v3 for Developers
UUID Generator v3 is a deterministic UUID generation tool designed for developers, system administrators, and backend engineers who need consistent, repeatable identifiers. Unlike random UUID versions, UUID v3 generates the same UUID every time for the same namespace and name.
Use the official UUID Generator v3 tool here: 👉 https://langstop.com/uuid-generator/v3
What Is UUID v3?
UUID v3 is a name-based UUID generated using MD5 hashing.
It produces deterministic UUIDs, meaning:
- Same namespace + same name → same UUID
- Ideal for database keys, migrations, caching, and idempotent APIs
- Predictable and reproducible identifiers
UUID v3 follows RFC 4122 standards and is widely supported across platforms.
UUID v3 vs Other UUID Versions
| Version | Type | Deterministic | Use Case |
|---|---|---|---|
| v1 | Time-based | ❌ | Legacy systems |
| v3 | Name-based (MD5) | ✅ | Stable IDs |
| v4 | Random | ❌ | Client-side IDs |
| v5 | Name-based (SHA-1) | ✅ | Cryptographically safer |
UUID v3 is preferred when repeatability matters more than randomness.
Why Use UUID Generator v3?
- 🔁 Deterministic output
- ⚡ Instant UUID generation
- 📦 Bulk UUID support
- 🧪 RFC 4122 compliant
- 🧑💻 Built for developers
Try it instantly: 👉 https://langstop.com/uuid-generator/v3
Single UUID v3 Generation
Use UUID v3 when you need one stable identifier derived from a known value.
Example Use Cases
- User ID derived from email
- Service identifiers
- Feature flags
- Static resource mapping
Example Output
Input Name: user@example.com
Namespace: DNS
UUID v3: 9073926b-929f-31c2-abc9-fad77ae3e8eb
Bulk UUID v3 Generation
Bulk UUID generation is useful when:
- Migrating databases
- Generating IDs for seed data
- Batch processing records
UUID Generator v3 supports bulk input, producing consistent UUIDs for each entry.
Example Input
user1@example.com
user2@example.com
user3@example.com
Example Output
9073926b-929f-31c2-abc9-fad77ae3e8eb
1e02a8cb-1f33-3c90-bd7c-4c58ff82f7a0
c9c29b16-8b35-3e3a-a55d-5c6c5b9d8b31
How UUID v3 Works (Step by Step)
- Select a namespace (DNS, URL, OID, or custom UUID)
- Provide a name (string value)
- MD5 hash is applied
- UUID version bits are set
- Deterministic UUID is generated
Same input → same output, always.
UUID v3 in Next.js (Complete Example)
// utils/uuidV3.ts
import { v3 as uuidv3 } from "uuid";
export const NAMESPACE_DNS = uuidv3.DNS;
export function generateUUIDv3(name: string) {
return uuidv3(name, NAMESPACE_DNS);
}Usage in a Next.js Component
"use client";
import { generateUUIDv3 } from "@/utils/uuidV3";
import { Button } from "@/components/ui/button";
import { useState } from "react";
export default function UUIDv3Demo() {
const [uuid, setUUID] = useState("");
return (
<div className="space-y-4">
<Button
onClick={() => setUUID(generateUUIDv3("user@example.com"))}
>
Generate UUID v3
</Button>
<p className="font-mono text-sm">{uuid}</p>
</div>
);
}UUID v3 with Zustand (Global State)
import { create } from "zustand";
import { v3 as uuidv3 } from "uuid";
type UUIDStore = {
uuid: string;
generate: (name: string) => void;
};
export const useUUIDStore = create<UUIDStore>((set) => ({
uuid: "",
generate: (name) =>
set({ uuid: uuidv3(name, uuidv3.DNS) }),
}));Common Use Cases for UUID v3
- Database primary keys
- Idempotent APIs
- Cache keys
- Static content IDs
- Dev tools & internal systems
UUID v3 ensures consistency across environments.
FAQs
Is UUID v3 secure?
UUID v3 uses MD5 and is not cryptographically secure. Use UUID v5 for stronger hashing.
Can UUID v3 collide?
Collisions are extremely unlikely unless inputs are identical.
Should I use UUID v3 or v4?
Use v3 when determinism is required. Use v4 for randomness.
Is UUID v3 SEO-friendly?
UUIDs should not be exposed in URLs for SEO purposes.
Does this tool support bulk UUID v3?
Yes. UUID Generator v3 supports bulk generation.
Why Use Langstop UUID Generator v3?
- Clean UI
- Developer-first UX
- Fast bulk processing
- No signup required
- Built for modern workflows
👉 https://langstop.com/uuid-generator/v3
Final Thoughts
UUID Generator v3 is ideal for developers who need predictable, repeatable identifiers.
Whether generating a single UUID or processing thousands in bulk, this tool delivers speed, accuracy, and consistency.
Start generating UUID v3 now: 👉 https://langstop.com/uuid-generator/v3