Stop Writing TypeScript Interfaces Manually (Use This Instead)

#javascript #typescript #json #productivity

Developers spend way too much time writing TypeScript interfaces by hand.
If you work with APIs, JSON, or large datasets, you know the pain:

interface User {
  id: number;
  name: string;
  email?: string;
  posts: Post[];
}

interface Post {
  id: number;
  title: string;
  content: string;
}

It’s repetitive, error-prone, and boring.

What if you could convert JSON to TypeScript interfaces automatically in seconds?

Why Manual Interfaces Waste Time

Nested objects are tricky – You have to create multiple interfaces manually.
Optional properties – Forget a ? and your code breaks.
Frequent API changes – Every time JSON changes, you need to update interfaces.

Developers spend hours on this instead of focusing on actual logic.

Enter JSONToAll

I built a free tool called JSONToAll that converts JSON to:

TypeScript interfaces
CSV
YAML
TOML

All with zero setup, no signup, and no ads.

How It Works

Paste your JSON into the tool:

{
  "id": 1,
  "name": "Sourav",
  "email": "sourav@example.com",
  "posts": [
    {
      "id": 101,
      "title": "My first post",
      "content": "Hello world!"
    }
  ]
}

Copy the generated interfaces:

interface Root {
  id: number;
  name: string;
  email?: string;
  posts: Post[];
}

interface Post {
  id: number;
  title: string;
  content: string;
}