EasyStack

Free interactive stack data structure visualizer, guides, and tools.

Live site: https://easystack.netlify.app

No build step. No framework. Plain HTML, CSS, and vanilla JavaScript, deployed as a static site on Netlify and installable as a PWA.

What it is

EasyStack teaches the stack data structure through three things:

• An animated, interactive stack visualizer.
• 22 in-depth guides covering operations, implementations in 5 languages, the call stack, stack memory, monotonic stacks, recursion, DFS, browser and OS stacks, and interview problems.
• 3 tools: an advanced stack visualizer, a call stack frame visualizer, and a complexity analyzer.

Features

• Animated push, pop, and peek operations with a live stack display.
• Code examples in C, C++, Java, Python, and JavaScript.
• Keyboard shortcuts for common operations.
• Light and dark mode across every page.
• PWA support with offline fallback.
• Clean, canonical URLs for every page.
• Rich structured data (JSON-LD) for search and answer engines.

Page map

Route	File	Description
/	index.html	Home and interactive stack visualizer
/guides	guides.html	Guides hub
/stack-operations	stack-operations.html	Core stack operations
/push-pop	push-pop.html	Push and pop in depth
/array-stack	array-stack.html	Array-based implementation
/linked-list-stack	linked-list-stack.html	Linked-list implementation
/stack-complexity	stack-complexity.html	Time and space complexity
/stack-analogies	stack-analogies.html	Real-world analogies
/javascript-stack	javascript-stack.html	JavaScript implementation
/call-stack	call-stack.html	The call stack
/stack-memory	stack-memory.html	Stack memory
/monotonic-stack	monotonic-stack.html	Monotonic stacks
/stack-debugging	stack-debugging.html	Debugging with stacks
/stack-recursion	stack-recursion.html	Recursion and stacks
/stack-best-practices	stack-best-practices.html	Best practices
/stack-problems	stack-problems.html	Classic problems
/stacks-vs-queues	stacks-vs-queues.html	Stacks vs queues
/stack-dfs	stack-dfs.html	DFS with stacks
/browser-stack	browser-stack.html	Browser use of stacks
/os-stack	os-stack.html	OS use of stacks
/stack-interview	stack-interview.html	Interview preparation
/python-stack	python-stack.html	Python implementation
/java-stack	java-stack.html	Java implementation
/cpp-stack	cpp-stack.html	C++ implementation
/c-stack	c-stack.html	C implementation
/stack-visualizer	stack-visualizer.html	Advanced stack visualizer tool
/stack-frame-visualizer	stack-frame-visualizer.html	Call stack frame visualizer tool
/complexity-analyzer	complexity-analyzer.html	Complexity analyzer tool
/about	about.html	About the project
/contact	contact.html	Contact
/feedback	feedback.html	Feedback
/privacy	privacy.html	Privacy policy
/404	404.html	Not found page
/offline	offline.html	Offline fallback page

Tech stack

• HTML5, CSS3, and vanilla JavaScript (ES2015+).
• No build step, no bundler, no npm dependencies.
• Hosted on Netlify as a static site.
• PWA via manifest.json and service-worker.js.
• Guide and tool pages share the hig.css / hig.js design system.

Local development

There is no build step. Serve the repository root and open a page:

python -m http.server 8000

or

npx serve

Then browse to http://localhost:8000.

Deployment

• Push to main and Netlify publishes the repository root.
• _redirects and _headers are applied automatically by Netlify.
• When you change cached assets, bump CACHE_VERSION in service-worker.js so visitors get the new files.

SEO conventions

• Clean, canonical URLs (no .html), enforced by _redirects.
• Unique <title> and meta description per page.
• Open Graph and Twitter Card tags using images/social-card.png.
• JSON-LD structured data: WebSite on the home page, Article and SoftwareApplication plus BreadcrumbList, HowTo, and FAQPage across pages.
• All public URLs listed in sitemap.xml.
• Crawler directives in robots.txt.

Architecture

See docs/ARCHITECTURE.md for the full architecture, routing, theming, and how to add a new page.

Contributing

See CONTRIBUTING.md for how to contribute. Please also read the Code of Conduct. To report a security issue, see SECURITY.md.

License

MIT. See LICENSE.

Author

Arun Neupane, a CSIT student from Nepal.

• GitHub: @arundada9000
• YouTube: @code_with_ease