Free Developer Utilities
Fast, distraction-free utilities designed for daily engineering workflows. Every tool runs 100% inside your browser—no tokens, JSON payloads, or secrets ever leave your machine.
⚡ DevBot online: 8 free client-side developer utilities ready!
JSON-to-Zod & TypeScript Generator
Format JSON and convert instantly into verified Zod schemas and TypeScript interfaces with 1-click export.
100% Client-Side: Your JSON payload never leaves your browser.
Regex Tester & Live Match Debugger
Test regular expressions against sample text with live match highlighting, capture groups, and common presets.
100% Client-Side: Executed locally in your browser JS engine.
Cron Expression Builder & Schedule Calculator
Build standard 5-field cron schedules visually, translate to plain English, and preview the next 5 run times.
100% Client-Side: Instant schedule calculation.
JWT Token Decoder & Payload Inspector
Inspect JSON Web Token headers, claims, and expiration timestamps locally without sending tokens over the network.
100% Client-Side Privacy: Tokens are decoded locally. Note: Decoding does not verify cryptographic signatures.
Base64 & URL-Safe Encoder / Decoder
Encode and decode UTF-8 strings, API basic auth headers, and URL-safe Base64 payloads.
100% Client-Side: Zero server round-trips.
UUID v4 / ULID / NanoID Bulk Generator
Generate cryptographically strong UUIDs, sortable ULIDs, and compact IDs in raw, uppercase, or JSON array format.
Uses window.crypto.getRandomValues() locally in your browser.
Code & Text Diff Viewer
Compare two code snippets or configuration files line-by-line to spot additions, removals, and drift.
100% Client-Side: Diffing runs locally in memory.
HTTP API Request & cURL Code Generator
Construct REST requests with custom headers and JSON bodies, and generate ready-to-copy cURL, fetch(), and Axios code.
Code generation is 100% local in your browser.