Generator Function Explorer - Online Step by Step
Write a generator function and step through it with next(). See values and done state. Understand iterators.
UD5 Toolkit
The ultimate party game companion. Generate spicy truths, wild dares, and unforgettable moments for your next gathering.
Write a generator function and step through it with next(). See values and done state. Understand iterators.
Create a shadow that appears when a container is scrollable. Pure CSS using background attachments. Copy the style easily.
Generate an <img> tag with the loading='lazy' attribute and optional low‑quality placeholder. Improve Core Web Vitals. Copy the snippet.
Place two containers side by side to see how inline‑flex differs from flex. Understand block vs inline formatting.
Enter the characters you need and generate a smaller font file from a TTF/OTF. Keep only the glyphs you use. Using harfbuzz WASM.
Plan a party or event budget by category (venue, food, decorations). See total and cost per guest. Export summary.
Build a conic gradient with any number of color stops. Visual editor. Ideal for creating pie charts or colorful spinners.
Simulate a traceroute by entering a destination IP. Learn about AS paths and latency. Does not send real packets; educational visualisation.
Enter a full URL and get all query parameters in a clean table with decoded values. Quickly see UTM and tracking params.
Explore the contents of the Cache Storage API for your domain. See cached requests and their sizes. Debug offline apps.
Create CSS clamp() values for fluid typography. Enter min and max font sizes and viewport widths. Modern responsive design.
Generate a realistic‑sounding dinosaur name and see a fun description. Perfect for kids and writers.
Create a customizable checkerboard or grid background using pure CSS gradients. Adjust cell size and colors. Copy the code.
Fill in your PWA details to generate a valid manifest.json file. Include icons, theme color, display mode.
Paste any iframe embed code (YouTube, maps) and get a responsive wrapper div with correct aspect ratio CSS.
Create a QR code that lets people connect to your Wi‑Fi without typing a password. Just scan and join. Secure local.
Design a pure CSS tooltip with custom text, position (top/bottom/left/right), and arrow. Copy the clean code.
Upload a small pixel art image and get a CSS grid layout that recreates it using divs. Novelty developer tool.
Generate a random, funny or serious company slogan for your startup idea. Brainstorming helper. All local.
Generate valid, random unicast MAC addresses for testing or spoofing. Select OUI prefix if desired. Local only.
Create a QR code that contains your full vCard contact information. Scan to save directly to a phone. No data leaves browser.
Create and format Markdown tables by adjusting rows and columns. Align text, copy the raw Markdown. Perfect for README files.
Click for an endless stream of random dad jokes and puns. Copy and share. Guaranteed to make you groan. All local.
Generate magic squares of odd order (3x3, 5x5, …). See the sum constant and verify rows, columns, diagonals. Educational math toy.
Generate a random Sudoku puzzle with a unique solution. Choose difficulty and type numbers on the board. Timer and mistake counter.
Enter a list of words and create a custom word search grid. Choose difficulty, print or export as PDF. Great for teachers.
One click to get a hilarious excuse for being late, missing homework, or not doing chores. Pure comedy.
Create a fake WhatsApp/iMessage chat screenshot. Customize names, messages, and timestamps. Just for fun.
Click to generate a random haiku from natural language templates. Pure algorithmic poetry fun. Copy and share.
Generate a QR code with a custom text label below or above. Perfect for printed signs. All generated locally as a single image.