Full-Stack Developer Toolkit
Full-stack developers juggle front-end markup, back-end APIs, databases, and deployment pipelines — often in the same hour. The constant context-switching between layers means small utility tasks pile up fast. These free, browser-based tools cover every layer of the stack so you can stay productive without installing yet another CLI or IDE plugin.
JSON Formatter & Validator
The lingua franca of APIs. Paste raw JSON to pretty-print, validate, and inspect payloads flowing between your front-end fetch calls and back-end controllers. Catches structural errors before they hit production.
JS Beautifier
Unminify production JavaScript or reformat messy code inherited from another team. When the front-end build output looks like one gigantic line, this tool makes it readable in seconds.
RegExp Tester
Test regular expressions with live highlighting before embedding them in front-end validators or back-end parsers. Supports global, case-insensitive, and multiline flags.
Base64 Encoder / Decoder
Decode JWT tokens from your auth layer, encode images for data: URIs in CSS, or inspect Base64 payloads in webhook bodies. A universal utility across both front-end and back-end work.
Code Diff Tool
Compare React components, API controller changes, or Dockerfile updates side by side. Essential during code review when you need a quick visual diff without leaving the browser.
WebSocket Tester
Connect to your WebSocket server and send or receive messages directly in the browser. Test real-time chat features, live dashboards, or notification streams without building a test harness.
JSON to YAML Converter
Convert JSON to YAML for Docker Compose, Kubernetes manifests, CI pipeline configs, or any infrastructure-as-code file that lives alongside your application code.
URL Encoder / Decoder
Encode query parameters for front-end routing or decode percent-encoded strings from server logs. Prevents the double-encoding bugs that plague OAuth redirects and deep links.
Crontab Calculator
Validate cron expressions for scheduled jobs — whether that is a Node.js node-cron task, a Laravel scheduler, or a Kubernetes CronJob. See the next ten execution times in plain English.
MD5 / Hash Generator
Generate hashes for cache-busting filenames, verifying webhook signatures, or testing your server-side hashing logic. Supports MD5, SHA-256, and SHA-512.
Color Converter
Translate design tokens between HEX, RGB, and HSL. Essential when syncing Figma specs with CSS custom properties or Tailwind configuration.
cURL Converter
Paste a cURL command from API documentation and convert it to a fetch request, Python snippet, or other language. Bridges the gap between back-end docs and front-end implementation.
QR Code Generator
Generate QR codes for deep links, mobile app testing URLs, or two-factor authentication setup. Useful during both development and user-facing feature work.