DevWrench

DevWrench

Free browser-based developer tools for JSON and API workflow

KarloVonKlifton
@KarloVonKlifton
Published on Apr 6, 2026
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About DevWrench

DevWrench is a collection of fast browser-based developer tools designed for everyday development workflows. Convert JSON to TypeScript interfaces, transform cURL commands into Fetch requests, compare JSON objects, flatten nested JSON to CSV and inspect large CSV files directly in your browser. All tools run locally in your browser: no accounts, no uploads and no tracking. DevWrench focuses on simple utilities developers use daily when working with APIs, JSON data and JavaScript projects.

Product Insights

DevWrench provides a suite of web-based utilities for data transformation and API development, focusing on JSON and CSV manipulation. It operates entirely within the browser to ensure data privacy for developers without requiring registration.

  • Execute JSON to TypeScript conversions and cURL to Fetch transformations locally.
  • Browser-based execution ensures no data uploads or tracking.
  • Zero-friction access with no account or registration required.
  • Integrated tools for comparing JSON objects and flattening nested data to CSV.

Ideal for: Developers, Frontend Developers, and Backend Developers can utilize these tools for daily API workflows and data analysis tasks.

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