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Echo JS

Desktop apps Introducing mermaid-lint: Stop Shipping Broken Diagrams How We Cut Slow Responses by 80% Migrating to Next.js App Router The quiet problem with unnecessary async - Matt Smith GitHub - ant-design/ant-design-cli: Ant Design on your command line. Query component knowledge, analyze project usage, and guide migrations — fully offline. Uncovering the Magic Behind Playwright React Performance Isn’t About useMemo — It’s About Render Boundaries T2 No Escape Hatches · Prickles GitHub - auto-agent-protocol/auto-agent-protocol: Automotive Agent Protocol GitHub - coactionjs/coaction: Zustand-style state management with built-in render tracking and cached computed state GitHub - williamtroup/Rattribute.js: ❓ A lightweight JavaScript library for automatically changing HTML element attributes based on responsive screen sizes. GitHub - williamtroup/Rink.js: 🔗 A JavaScript library for generating responsive HTML link targets. SVAR Kanban: Interactive Task Board Component for Svelte, React, and Vue Performance Cost of Popular 3rd Party Scripts date-light - Tiny date utilities for JavaScript When React Hooks Stop Scaling: Moving Complex State to Zustand - Oren Farhi GitHub - jskits/loggerjs: A faster, more powerful isomorphic logger Out Loud — Free AI Text to Speech Pocket DB — Embedded single-file NoSQL for Node.js billboard.js 4.0 release: Canvas rendering mode, 94.3% faster! GitHub - thegruber/linkpeek: Secure TypeScript link preview and URL metadata extractor for Open Graph, Twitter Cards, JSON-LD, Node/Bun/Deno/edge. GitHub - evoluteur/healing-frequencies: Play the healing frequencies of various sets of tuning forks: Solfeggio, Organs, Mineral nutrients, Ohm, Chakras, Cosmic octave, Otto, DNA nucleotides... or custom. Animated sine waves - 27 lines of pure JavaScript Framework | Neutralinojs GitHub - AllThingsSmitty/typescript-tips-everyone-should-know: ✅ A curated collection of practical TypeScript patterns that improve safety, readability, maintainability, and developer experience. 🧠 GitHub - iDev-Games/State-JS: State.js is a CSS‑reactive framework that makes UI state and updates flow through CSS instead of JavaScript logic. GitHub - yankouskia/gameplate: :video_game: Boilerplate for creating game with WebGL & Redux :game_die: GitHub - yankouskia/get-browser: 💻 Lightweight tool to identify the browser (mobile+desktop detection)📱 GitHub - yankouskia/is-incognito-mode: Identify whether browser is in incognito mode 👀
Heat.js : JavaScript Heat Map
2026-07-09 · via Echo JS

Features designed for you

license

Completely free and open source (view our licence here).

data_object

Supports export for integration with frameworks including React, Vue, and Angular.

settings

Fully configurable, featuring custom triggers and adjustable text to support multiple language locales.

language

60 languages supported by default (view the languages here).

view_apps

Includes multiple views, including Map, Line, Chart, Days, Months, and Color Ranges.

export_notes

Export data to multiple file formats (view the supported types here), with system clipboard setting support.

upload

Import data from multiple file formats (view the supported types here).

arrows_outward

Allows the component to be resized dynamically to fit different layouts or screen sizes (off by default, view a demo here).

compare

Compare daily values with last year’s data to quickly see the percentage change, helping you identify trends, growth, or declines at a glance.

Explore screenshots

Looking for a calendar?

Try Calendar.js, a lightweight and flexible JavaScript library for building interactive calendars and date-based views. It makes it easy to display, manage, and navigate events with a clean API, customizable layouts, and smooth user interactions.

Need extra support?

Looking for a particular feature or have a specific request? Our team is here to help — just reach out to us anytime through our support page. Our team is committed to getting back to you within 48 hours of your request.