UD5 Toolkit
Nail Shape Visualizer – See Square, Oval, Almond & Coffin on Your Hand
Upload a photo of your bare nails or hand and overlay different nail shapes to see how they’d look. Helps you decide before your next salon visit.
Tag: Audio Visualizer - Waveform & Bars
31+ toolsCustom Keyboard Layout Visualizer for Touch Typing
Design a custom keyboard layout and save it as an image to help learn touch typing on a custom keymap. Supports ANSI, ISO, and ortho layouts.
Caching Strategy Visualizer – Online Cache First vs Network First
Select a caching strategy and see a flow diagram of how requests are handled. Learn PWA patterns.
Screen Reader Text Visualizer - Online View Hidden A11y Content
Paste a website's HTML and see which text is only visible to screen readers (e.g., .sr‑only). Preview the accessible layer.
CSS color‑mix() Visualizer - Online Blend in sRGB & OKLCH
Pick two colors and mix them in different color spaces with sliders. See the difference between sRGB and OKLCH mixing. Copy the code.
Password Policy Visualizer - Online See Rules in Action
Define password rules and see a live checklist that updates as you type. Design better password UX for your app.
Big‑O Complexity Visualizer - Online Compare O(1) to O(n!)
Plot different Big‑O complexities on a chart. See how O(log n) stays flat while O(2^n) explodes. Educational reference.
Relative Color Syntax Visualizer - Online Adjust Lightness/Chroma
Start from a base color and use `oklch(from color l c h)` to create lighter or darker variants. Copy the code.
Keyboard Shortcut Visualizer - Online See macOS/Win Modifier Keys
Press any key combination and see the human‑readable shortcut for macOS and Windows. Developer docs helper.
Event Loop Visualizer - Online See Call Stack & Microtask Queue
Watch a simulation of how the JavaScript event loop handles synchronous code, microtasks, and macrotasks. Learn async.
Regex State Machine Visualizer - Online DFA Diagram
Enter a simple regular expression and see its equivalent Deterministic Finite Automaton diagram. Learn how regex engines work.
Recursion Tree Visualizer - Online See Fibonacci Calls
See the complete recursion tree for small Fibonacci or factorial calculations. Understand overlapping subproblems. Educational.
aria‑describedby Visualizer - Online Check Descriptions
Highlight elements with aria‑describedby and see the linked description text. Verify a11y annotations.
Storage Quota Visualizer - Online See Available Space
Call navigator.storage.estimate() and display a visual pie chart of used vs. available browser storage. For PWA debugging.
Touch Pressure & Radius Visualizer - Online Advanced Input
Touch your screen and see the pressure and radius reported. Visualize force. Mobile developer tool.
Data Structure Visualizer - Online Array, Stack, Queue
Add, remove, push, pop items and watch the data structure change visually. Supports arrays, stacks, and queues. For CS students.
Password Bit Strength Visualizer - Online Security Meter
Type a password and see a bar that fills based on estimated bits of entropy. Color‑coded feedback. No storage.
CSS Box Model Visualizer - Online Interactive Margin Padding
Adjust margin, border, padding, and content sizes interactively and see the rendered box model. Get the exact CSS. Teach or learn layout.
Sorting Algorithms Visualizer - Online Bubble, Quick & Merge
Watch classic sorting algorithms step through a randomized bar chart. Adjust speed and array size. Great for learning algorithm efficiency.
Typing Layout Visualizer – QWERTY, Dvorak, Colemak
Compare standard keyboard layouts side-by-side. Click keys to see characters. Useful for learning alternative layouts.
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.
Bit Density Visualizer - Online File Binary Viewer
Upload a small file to see each byte as a block, color-coded by value. Visualize the structure of binary data. Client-side.
SQL JOIN Visualizer - Online Interactive Venn Diagrams
See interactive Venn diagrams for SQL JOINs: INNER, LEFT, RIGHT, FULL, CROSS. Understand set theory visually. Local static site.
Paint Color Visualizer – Online Test Wall Colors on Sample Rooms
Simulate paint colors on a pre-loaded room photo by adjusting hue, saturation. Find your perfect shade before buying. Local canvas.
Regex Visualizer - Online Railroad Diagram Generator
Enter a regular expression and see a visual railroad diagram explaining the pattern. Learn and debug regex.
Audio to GIF Waveform - Online Animated Sound Visualizer
Upload an audio clip and generate an animated GIF of its waveform dancing. Shareable sound snippet. Canvas magic.
Tire Size Visualizer - Online Compare & Dimensions
Enter two tire sizes and see a side‑by‑side comparison of diameter, width, and speedometer error. Local math.
Audio Waveform Visualizer - Online See Your Sound
Visualize audio in real time from your microphone or uploaded audio file. See the waveform dance. Uses Web Audio API locally.
JSON to Graph Visualization - Online Tree Diagram
Paste a JSON object and see a dynamic, draggable tree graph representation. Excellent for debugging nested data.
Beaufort Wind Scale Visualizer – Online Speed & Sea State
Drag a slider to see wind speed in knots/mph/kmh and the corresponding sea conditions and land effects.
Cash Stack Visualizer – Online See How Much $1 Billion Looks Like
Enter an amount and see a virtual stack of $100 bills with height comparison to everyday objects.