Baby Feeding Log - Online Track Breast & Bottle Patterns
Record feeding times, side (left/right for nursing) or oz for bottle. Track daily patterns. Data stays in your browser. Simple newborn helper.
UD5 Toolkit
Add students and session dates above to start tracking attendance.
Or load sample data to see how it works.
Record feeding times, side (left/right for nursing) or oz for bottle. Track daily patterns. Data stays in your browser. Simple newborn helper.
Simple tracker to record potty attempts, successes, accidents. See patterns. Data stays local. Aids in toilet training journey.
Enter two dates and see the exact number of days, weeks, and workdays between them. Also shows the countdown or days since.
Record your screen, window, or tab with audio directly in the browser. Download the recording as a WebM file. No upload.
Record your screen, window, or tab with audio directly in the browser. Download as WebM. No extension required.
A precise online metronome with adjustable BPM, beat emphasis, and time signature. Works offline. Essential for musicians.
Tap a glass icon each time you drink a cup of water. See your daily intake. Reminders optional. Local storage.
Set any future date and see a live countdown in days, hours, minutes, seconds. Fun animated display. Save multiple countdowns locally.
Find the centroid (center of mass) of any convex polygon by entering vertex coordinates. Useful for physics and design.
Play a metronome with adjustable BPM, time signature, and subdivisions (eighth, triplet, sixteenth). Tap tempo and visual flash. Works offline for practice.
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.
See a comprehensive table of which modern web APIs your current browser supports. Includes WebGPU, AVIF, and more.
Convert volumetric flow rate units: gallons per minute, liters per second, cubic meters per hour. Useful for plumbing and hydraulics.
Paste robots.txt content and parse it to check validity, find disallowed paths. Educational SEO tool. Local processing.
Paste a user agent string to get a human-readable breakdown of browser, operating system, and device. See your own current agent info automatically.
Paste a robots.txt file and validate its syntax. See if a specific user‑agent can access a path. Essential for webmasters.
Tune your guitar using the browser microphone. Detects pitch and shows deviation from standard tuning. No installation, pure client-side audio processing.
Set a list of agenda items with allocated minutes. Advance through speakers and see remaining time visually. Keep meetings on track.
Test your browser's built‑in speech recognition. Speak and see the transcribed text appear live. Must‑have for voice app devs.
Virtual flip coins thousands of times and see the heads/tails ratio converge to 50%. Interactive law of large numbers.
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.
Drag a virtual ruler across your screen to measure pixel distances. Horizontal and vertical guides. Useful for UI designers checking alignment.
Visualize audio in real time from your microphone or uploaded audio file. See the waveform dance. Uses Web Audio API locally.
Register a service worker, subscribe to push, and send a test notification using a VAPID key pair. Step‑by‑step demo.
Compare :focus and :focus‑visible styling. See which one applies when using mouse vs. keyboard. Accessible focus management.
Click any element on a demo page and see which events are attached. Visual debugger for event handling.
Paste HTML and see a before/after comparison of minified output. Check the byte savings. All local.
Count total DOM nodes on the current page and show warnings if limits exceed best practices. Keep the DOM lean.
Play an audio file or use mic to see real‑time frequency bars. Choose colors. Great for music videos. Canvas.