Pathfinding Visualizer - Online A*, Dijkstra & BFS Grid
Draw walls on a grid and watch A*, Dijkstra, or BFS find the shortest path. Interactive animation. Learn graph traversal.
UD5 Toolkit
Visualize an estimated network hop path from your device to any destination
Simulation for learning & demonstration purposes only
traceroute (or tracert on Windows) command in a terminal.Draw walls on a grid and watch A*, Dijkstra, or BFS find the shortest path. Interactive animation. Learn graph traversal.
Enter a URL and see the full redirect chain with status codes and response times. Also validates against your chosen rule.
Graph a cubic‑bezier or steps easing function and see a bouncing ball animation using it. Copy the CSS timing‑function.
Create custom traceable handwriting worksheets with name or sentence. Print in dotted font. Great for teachers and parents.
Design borders with linear or conic gradients. Supports border‑image and background‑clip methods. Copy optimized CSS.
Parse a URL's query string into a key-value table, or build a query string from parameters. Perfect for API testing and web development.
Draw pixel art with a grid, color palette, and eraser. Export as PNG. Perfect for game developers and hobbyists.
Browse Unicode by block: Latin, Cyrillic, CJK, Emoticons. See characters and copy with a click. Full reference.
Paste a user agent string to get a human-readable breakdown of browser, operating system, and device. See your own current agent info automatically.
See your monitor's color depth and pixel depth. Detect if HDR or wide gamut is available using media queries.
Paste a potential XSS vector and see if it executes in a sandboxed iframe. For security researchers and education.
Paste a JSON Web Token and decode its header and payload. Verify signature if you provide the secret. Fully local.
Type your name and create a stylized ASCII text banner for email signatures or forum posts. Choose a font style.
Test required, pattern, minlength etc. See validity states and custom error messages. Learn browser‑native validation.
Paste response headers string and get a security audit. Check presence and configuration of key security headers. Local analysis.
Paste a website's HTML and see which text is only visible to screen readers (e.g., .sr‑only). Preview the accessible layer.
Compose messages with bold, italic, links, and code. See the raw HTML or Markdown for your Telegram bot API calls.
Compare two text blocks and highlight differences line by line. Ideal for code review and document revisions. All diffs computed locally for privacy.
Paste a robots.txt file and validate its syntax. See if a specific user‑agent can access a path. Essential for webmasters.
Enter HTML with aria-labels and see what a screen reader would announce. Simulates common patterns. Local educational tool.
Build an iframe with different sandbox flags and see live which features are blocked. For secure embedding.
Paste two JSON objects and find the structural differences with side‑by‑side highlighted output. Indispensable for API debugging.
Create a polished HTML email signature with your photo, links, and company details. Live preview and copy HTML to clipboard. Works with Gmail, Outlook, Apple Mail.
Look at HTTP headers and JavaScript objects to guess which browser extensions might be installed. For awareness.
Design a clean, professional email signature with your photo, links, and disclaimers. Copy the HTML to use in Gmail/Outlook.
Test if a script or style will be allowed by a given CSP. Compute hash/nonce. Strengthen your site’s defense against XSS. Local.
Paste an HTML snippet and see how a screen reader might interpret it. Highlights missing alt texts and ARIA misuses. Educational.
Drag pie slices to represent fractions and see them added together. Great for visual learners.
Type a simple sentence and see a rudimentary Reed‑Kellogg diagram. Educational.
Build a combination resistor network by adding series/parallel groups and get total resistance. Visual circuit.