Privacy-First Developer Utilities
100% of processing happens client-side in your browser.
- 1
{ - 2
"id": "usr_8f3a2c1e", - 3
"name": "Ada Lovelace", - 4
"email": "ada@example.dev", - 5
"role": "admin", - 6
"active": true, - 7
"createdAt": "2026-07-22T12:34:56Z", - 8
"profile": { - 9
"location": "London", - 10
"website": "https://ada.dev" - 11
}, - 12
"tags": ["engineer", "pioneer"] - 13
}
- 1
interface Root { - 2
id: string; - 3
name: string; - 4
email: string; - 5
role: string; - 6
active: boolean; - 7
createdAt: string; - 8
profile: { - 9
location: string; - 10
website: string; - 11
}; - 12
tags: string[]; - 13
}
No Tool-Input Logging
Your JSON, tokens, commands, and text are never uploaded or logged. The site host may still record ordinary page requests.
Works Offline After First Visit
Open DevCrate once while online. Cached tools keep working without Wi-Fi until this browser's site data is cleared.
Keyboard First
Press Cmd+K on Mac or Ctrl+K on Windows and Linux to jump directly to any tool.
All the tools you need. Local first.
Fast, precise, and private utilities that run entirely in your browser.
JSON to Code
Generate TypeScript, C#, Kotlin, and SQL from representative JSON.
JSON to C#
Generate serializer-ready C# records with System.Text.Json attributes.
JSON to Shopify CSV
Map product catalogs, variants, SKUs, prices, and images to Shopify CSV.
cURL to Code
Translate requests into Fetch, Python Requests, or HttpClient.
JWT Decoder
Inspect headers and claims without uploading a token.
Base64 & Hash
Encode, decode, and create local SHA digests.
UUID Generator
Generate secure UUID v4 values with browser crypto.
Your data belongs to you.
Tool inputs stay in this browser and are never sent to a DevCrate processing server.