Focused JavaScript utilities with clear demos and practical use cases.
Dependency-free form validation using data attributes and accessible error states.
Detects mouse movement toward the browser close area and triggers a callback.
Image-to-WebP conversion utility with quality controls and blob output.
Browser and system feature detection for WebGL, WebRTC, ServiceWorker, and more.
Markdown-to-HTML converter with tables, syntax highlighting, and task lists.
Debounce and throttle utilities with leading/trailing options and maxWait.
Pub/sub event emitter with on/off/once/emit and namespaced events.
CustomEvent bus for web components with source/target envelopes.
localStorage wrapper with TTL support, JSON serialization, and expiration.
URL parameter management: get, set, remove, and serialize query strings.