
JSON to TypeScript
Convert any JSON object to TypeScript interfaces or type aliases instantly. Supports nested objects, arrays, optional properties, and union types. Free, private, browser-based.
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Convert any JSON object to TypeScript interfaces or type aliases instantly. Supports nested objects, arrays, optional properties, and union types. Free, private, browser-based.

A free, browser-based developer tool to convert Unix epoch timestamps to human-readable dates and back, with full IANA timezone support, auto-detection of seconds vs milliseconds, and a live real-time clock.

Build CSS @keyframes animations visually. Add keyframe stops, set opacity, transforms and colors, preview live, then copy production-ready CSS. No login, 100% in-browser.

A free visual tool to create, stack, and customize CSS box shadows — control offset, blur, spread, color, and opacity with live preview. Copy production-ready CSS instantly, no login required.

Create beautiful linear, radial, and conic CSS gradients with live preview. Add color stops, adjust angles, and copy clean CSS or Tailwind code instantly — no sign-up required.

A free visual tool for experimenting with CSS Flexbox properties in real time—adjust container and item settings, preview layout changes instantly, and copy production-ready CSS with one click. No signup required.

Calculate, visualize, and plan API rate limit budgets. Estimate requests per window, burst capacity, throttle delays, and retry strategies — free, instant, no sign-up.

Instantly convert any JSON object into a valid JSON Schema. Paste your JSON, get a Draft 4/6/7/2019/2020 schema in one click — no sign-up, 100% client-side.

Generate mailto links instantly — set To, CC, BCC, Subject, and Body fields, preview the encoded URL, and copy HTML or plain links with one click. No signup, no install.

A free developer tool that converts curl commands into JavaScript fetch, axios, or XMLHttpRequest code instantly — no sign-up, no backend, runs entirely in the browser.

Generate perfect SEO meta tags, Open Graph tags, and Twitter Card tags instantly. Live Google SERP preview, tabbed interface, one-click copy—100% browser-based, no sign-up required.

A free browser-based tool that encodes and decodes URLs instantly with encodeURIComponent and encodeURI modes, multi-line batch processing, and a common encodings reference—100% client-side, no signup required.