Free, 100% client-side private JSON to TypeScript Interfaces converter. Transform syntax instantly in your browser with zero data logging, strict AST validation, and CLI support.
export interface Root {
id: string
name: string
email: string
role: string
active: boolean
preferences: RootPreferences
tags: string[]
}
export interface RootPreferences {
theme: string
notifications: boolean
retries: number
}Paste or type your source JSON syntax into the input editor pane.
The parser validates data structure in real-time, building an in-memory AST without sending any bytes to external servers.
Inspect the formatted TypeScript Interfaces output generated instantly in the output preview pane.
Copy the result to your clipboard, download as a .ts file, or chain it into a multi-step DevFlow pipeline.
100% Client-Side Private: All transformations execute entirely within your browser memory; zero payload logging.
Strict AST Preservation: Retains nested objects, arrays, types, and schema contracts accurately.
Instant Interactive Feedback: Real-time syntax validation with line-specific error reporting.
DevFlow CLI Compatible: Automate identical conversions directly inside your terminal, pre-commit hooks, or CI pipelines.
Run this transformation offline using the high-performance DevFlow CLI inside GitHub Actions, GitLab CI, or pre-commit hooks.
devflow convert json typescript -i data.json -o output.tsPrettify, minify, and validate JSON data instantly.
Repair and fix malformed JSON data from AI outputs, API responses, and copy-paste.
Interactive jq expression tester, filter builder, and JSON transformer powered by WebAssembly.
Convert JSON to TypeScript interfaces or type aliases instantly.