Birthday Countdown Widget - Online Your Big Day Timer
Set your birth date and see a live countdown with days, hours, minutes, and seconds. Shareable link. Pure frontend.
UD5 Toolkit
Track days until your birthday, wedding, vacation, or any special event. Never miss a moment that matters.
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Set your birth date and see a live countdown with days, hours, minutes, and seconds. Shareable link. Pure frontend.
Enter two dates and see the exact number of days, weeks, and workdays between them. Also shows the countdown or days since.
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.
Fill in title, date, time, and location to generate a downloadable .ics meeting invitation. Works with all major calendars.
Paste your speech, set time limit, and practice with a pacing indicator (words per minute). Refine delivery.
Set watering schedules for multiple plants with visual alerts. Shows which plants need water today based on last watered date. Data stored locally.
Record feeding times, side (left/right for nursing) or oz for bottle. Track daily patterns. Data stays in your browser. Simple newborn helper.
Track attendance for multiple subjects. Mark present/absent and see percentage. Data in localStorage. Simple student tool.
Virtual flip coins thousands of times and see the heads/tails ratio converge to 50%. Interactive law of large numbers.
Create a random, aspirational quarterly objective with unrealistic key results. For meeting icebreakers.
Simple tracker to record potty attempts, successes, accidents. See patterns. Data stays local. Aids in toilet training journey.
A precise online metronome with adjustable BPM, beat emphasis, and time signature. Works offline. Essential for musicians.
Assign Secret Santa pairings from a list of names with spouse/partner exclusions. Optionally email results via mailto link. Fully local, no server.
Tap a glass icon each time you drink a cup of water. See your daily intake. Reminders optional. Local storage.
Enter any two variables (speed, distance, time) and get the third. Supports mph, km/h, m/s and multiple units. Practical for runners and drivers.
Play a metronome with adjustable BPM, time signature, and subdivisions (eighth, triplet, sixteenth). Tap tempo and visual flash. Works offline for practice.
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.
Click any element on a demo page and see which events are attached. Visual debugger for event handling.
See a comprehensive table of which modern web APIs your current browser supports. Includes WebGPU, AVIF, and more.
Fill in your details and generate a professional-looking invoice ready to print or save as PDF. No sign-up, all data stays on your device. Great for freelancers.
Fill in your details and generate a professional‑looking invoice ready to print or save as PDF. No sign‑up, all data stays on your device.
Find the centroid (center of mass) of any convex polygon by entering vertex coordinates. Useful for physics and design.
Spin a colorful wheel that lands on Yes, No, or custom answers. Includes sound effects and adjustable probability. Local fun decision maker.
Register a service worker, subscribe to push, and send a test notification using a VAPID key pair. Step‑by‑step demo.
Generate CUIDs that are optimized for horizontal scaling and collision resistance. Great for client‑side IDs. Pure JavaScript.
Drag a virtual ruler across your screen to measure pixel distances. Horizontal and vertical guides. Useful for UI designers checking alignment.
Test your browser's built‑in speech recognition. Speak and see the transcribed text appear live. Must‑have for voice app devs.
Paste a robots.txt file and validate its syntax. See if a specific user‑agent can access a path. Essential for webmasters.