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MyDevTools
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Developer Tools Platform

One online developer toolkit for everyday engineering work

MyDevTools brings the utilities developers reach for every day into one browser-based workspace: format data, test APIs, generate tokens, inspect encodings, manage secure notes, and stay in flow.

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Built for search-worthy developer workflows

The platform is organized around real engineering jobs instead of disconnected one-off utilities.

  • Formatters and validators for JSON, SQL, GraphQL, Markdown, CSV, and more.
  • Network and API utilities including an API client, HTTP status reference, MIME lookup, and IP subnet calculator.
  • Generators for UUIDs, API keys, QR codes, mock data, cron expressions, and Docker Compose files.

Why use a unified toolkit

A single toolkit reduces the switching cost of jumping between browser tabs, npm packages, desktop apps, and random pastebin-style websites.

  • Use related tools from one dashboard and command palette.
  • Keep common developer utilities available on any machine with a browser.
  • Self-host the same open-source codebase when you want complete infrastructure control.

Designed for public discovery

Public tool landing pages explain what each utility does before sending users into the app experience.

  • Canonical public pages live under /tools for indexing and sharing.
  • Auth-gated app pages stay out of the sitemap to preserve crawl budget.
  • Structured data and llms.txt help search engines and AI assistants understand the toolkit.

Popular online developer tools

Continue from the platform page into canonical public tool pages.

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JSON Editor

Format, validate, and edit JSON data with text and tree views. Supports JSONPath queries.

JWT Decoder

Decode JSON Web Tokens in the browser: header, payload, exp, iat, and nbf. No server upload; signature not verified.

API Client

Test and debug HTTP requests with headers, body, and auth support. A lightweight Postman alternative in your browser.

Regex Tester

Test JavaScript regular expressions with live match highlighting, flags (g, i, m, s, u), and match counts. Client-side only.

UUID / ULID Generator

Generate UUID v1–v7 or ULIDs with namespace options and bulk copy or download.

Base64 Encoder / Decoder

Encode text to Base64 or decode Base64 strings instantly, with UTF-8 support. Runs entirely in your browser.