Earthquake Safety Drill Timer – Online Practice Alert
Simulate an earthquake alarm with a countdown and visual instructions for Drop, Cover, and Hold On.
UD5 Toolkit
Plan your disaster preparedness with this interactive checklist. Track essential items for a 72‑hour kit, bug‑out bag, or home emergency supply. All progress is saved automatically in your browser.
Simulate an earthquake alarm with a countdown and visual instructions for Drop, Cover, and Hold On.
Quick reference for what to do (and not do) after a snake bite. Pressure immobilization bandage diagram.
Set a reminder to change smoke detector batteries every 6 months. Optional sound alert and visual countdown. Local browser notification, stay safe.
Select species and see ideal humidity range. Set a reminder to mist enclosure. Keep scales healthy.
Set a date when a new fish arrives and get a daily checklist for observation. Countdown to safe introduction.
Timer to remind you to limit shower water exposure even with a cast cover. Keep your cast dry.
Write a short note and set a specific time for a browser notification reminder. Great for quick one‑offs. Local.
Set recurring audio/visual reminders to check and correct sitting posture. Adjustable interval and notification style. Helps reduce back pain from desk work.
Strip dangerous HTML tags and attributes (scripts, onclick) to prevent XSS attacks. Safe iframe preview. Local sanitation engine.
Timer that reminds you to look at something 20 feet away for 20 seconds every 20 minutes. Customizable intervals and subtle sound/visual alerts.
Paste email headers or body text to quickly spot phishing signs, suspicious domains, and obfuscated links. Educational and private.
Log your daily water consumption with one click. Set a goal and track progress. Data stored locally for privacy. Simple and clean interface.
Quick eligibility estimator for Canadian GST/HST credit and climate action incentive based on income and family size. For informational purpose only.
Compare time across multiple time zones and find a suitable meeting time. Convert a specific time to various cities. Browser-based and always accurate.
Need a reason why you are late or the build failed? Get a hilarious, tech‑themed excuse. Pure fun for dev teams.
Paste response headers string and get a security audit. Check presence and configuration of key security headers. Local analysis.
Enter hiding places and get a set of rhyming clues to print. Fun for kids' parties.
Set a timer that reminds you to take a break, stretch, or follow the 20‑20‑20 rule. Desktop notification supported. Runs offline.
See the current UV index forecast or enter a value to learn protection needed (SPF, hat, shade). Educational.
Select cities and see a 24-hour grid highlighting compatible meeting times. Drag to find a slot that works for everyone. Daylight saving aware.
Enter your must volume and current Brix, TA, and pH to calculate additions of sugar, acid blend, or tannin. Standard winemaking formulas.
Look up any HTTP status code and see its meaning, RFC reference, and example. Full offline reference.
Calculate the correct series resistor for an LED based on supply voltage, LED forward voltage, and desired current. Circuit diagram shown. Local only.
A complete reference of HTTP status codes with explanations. Search and filter by code or category. Useful for API developers and web debugging. Static and fast.
Keep a simple list of movies you want to watch. Add notes and check them off. Purely local storage.
Load a video and visually check if audio aligns with lips. Use frame‑by‑frame stepping. Debug playback issues.
Explore all Intl APIs: NumberFormat, DateTimeFormat, RelativeTimeFormat, ListFormat. See outputs for any locale. Powerful i18n.
Upload a WebP image and automatically generate a <picture> tag with JPEG/PNG fallback. Ensure compatibility everywhere.
Calculate the real monetary cost of a meeting by attendees' hourly rates. A humorous yet insightful productivity tool. All local calculation.
Create a properly styled 'Skip to Content' link. Customize target and appearance. Essential for keyboard users. Copy the HTML/CSS.