Event Countdown Timer - Online Days Until Birthday Wedding Vacation
Set any future date and see a live countdown in days, hours, minutes, seconds. Fun animated display. Save multiple countdowns locally.
UD5 Toolkit
Your big day timer — count every moment until your next celebration
Set any future date and see a live countdown in days, hours, minutes, seconds. Fun animated display. Save multiple countdowns locally.
A festive countdown showing days, hours, minutes until December 25. Animated snow and music toggle. Local time.
Set a list of agenda items with allocated minutes. Advance through speakers and see remaining time visually. Keep meetings on track.
Enter two dates and see the exact number of days, weeks, and workdays between them. Also shows the countdown or days since.
Tap a glass icon each time you drink a cup of water. See your daily intake. Reminders optional. Local storage.
Create a random, aspirational quarterly objective with unrealistic key results. For meeting icebreakers.
Set watering schedules for multiple plants with visual alerts. Shows which plants need water today based on last watered date. Data stored locally.
Fill in title, date, time, and location to generate a downloadable .ics meeting invitation. Works with all major calendars.
See a comprehensive table of which modern web APIs your current browser supports. Includes WebGPU, AVIF, and more.
Click for a warm, encouraging sentence to lift your spirits or support a friend. Small positive boost. No repeats.
Assign Secret Santa pairings from a list of names with spouse/partner exclusions. Optionally email results via mailto link. Fully local, no server.
Record feeding times, side (left/right for nursing) or oz for bottle. Track daily patterns. Data stays in your browser. Simple newborn helper.
Record your screen, window, or tab with audio directly in the browser. Download as WebM. No extension required.
Record your screen, window, or tab with audio directly in the browser. Download the recording as a WebM file. No upload.
Enter a URL and generate a responsive iframe embed code with correct aspect ratio. Supports YouTube, maps, and more.
Paste your speech, set time limit, and practice with a pacing indicator (words per minute). Refine delivery.
Spin a colorful wheel that lands on Yes, No, or custom answers. Includes sound effects and adjustable probability. Local fun decision maker.
Create a custom element with named slots and see content projection in action. Learn Web Components basics.
Track attendance for multiple subjects. Mark present/absent and see percentage. Data in localStorage. Simple student tool.
A precise online metronome with adjustable BPM, beat emphasis, and time signature. Works offline. Essential for musicians.
Play a metronome with adjustable BPM, time signature, and subdivisions (eighth, triplet, sixteenth). Tap tempo and visual flash. Works offline for practice.
Generate CUIDs that are optimized for horizontal scaling and collision resistance. Great for client‑side IDs. Pure JavaScript.
Simple tracker to record potty attempts, successes, accidents. See patterns. Data stays local. Aids in toilet training journey.
Register a service worker, subscribe to push, and send a test notification using a VAPID key pair. Step‑by‑step demo.
Paste HTML and see a before/after comparison of minified output. Check the byte savings. All local.
Virtual flip coins thousands of times and see the heads/tails ratio converge to 50%. Interactive law of large numbers.
Test your browser's built‑in speech recognition. Speak and see the transcribed text appear live. Must‑have for voice app devs.
Drag a virtual ruler across your screen to measure pixel distances. Horizontal and vertical guides. Useful for UI designers checking alignment.
Create a reflection effect for images or text using box‑reflect. Adjust direction and offset. Copy the CSS.
Generate a Lit Element web component skeleton with styles and properties. Copy and start coding immediately.