Sunrise Sunset Times - Online Any Location
Enter a city name or coordinates and see today's sunrise, sunset, and twilight times. Approximate algorithm. Local.
UD5 Toolkit
Real-time seconds since your last activity — mouse, keyboard, scroll & touch
setInterval, while activity detection is near-instantaneous thanks to event-driven reset logic. JavaScript timers are not perfectly precise (they can drift by a few milliseconds), but for practical purposes — productivity tracking, presence detection, or UX testing — the accuracy is more than sufficient. For sub-second precision, you would need a native application rather than a browser-based tool.
Idle Detection API) monitors all user activity across the entire device — any keyboard, mouse, or touch input anywhere on the system. This web-based tool only tracks activity within the current browser tab. If you move your mouse over another application, our tool won't detect it. This makes our tool ideal for measuring engagement with a specific web page or application, whereas system idle detection is better for global presence detection.
Enter a city name or coordinates and see today's sunrise, sunset, and twilight times. Approximate algorithm. Local.
Test how `content‑type: text/html` vs `content‑type: image/svg+xml` affects SVG rendering in the browser. Modern performance hint.
See the healthy weight range for your height using standard BMI chart. Gender‑specific data. Quick reference.
Paste text with highlights (e.g., from Apple Books) and extract only the highlighted lines. Save as list.
Check a live URL to extract and validate its canonical link element. Ensure correct SEO configuration. Runs from your browser.
Convert messy URLs into clean, keyword-rich slugs. Remove stop words, replace spaces with hyphens. Lowercase transformation. All local.
Take a lighthearted inventory of your character strengths (not official VIA). Self-reflection tool. All in browser.
Paste Markdown and get warnings for common mistakes: inconsistent heading spacing, bare URLs, and broken links. All local.
Query the permission state of camera, microphone, geolocation, and more. See the response and learn the API.
Paste HTML or URL to extract canonical link tag. Verify self-referencing. Simple SEO audit step. Local only.
Paste Markdown and convert all links from absolute to relative (or vice‑versa) based on a base domain. Bulk edit.
A visual guide to common copy‑editing and proofreading symbols. Click a mark to see its meaning. For writers.
Pick a contact from the device’s address book (mobile). Read name, email, and phone. All permission‑based. Privacy safe.
Fill in a form and see the FormData object as JSON. Perfect for debugging multipart form submissions. Client-side.
Convert Markdown to styled HTML that retains formatting when pasted into Google Docs or Word. Headings, bold, lists. Client‑side.
Turn any sentence into mocking SpongeBob‑style text. Choose intensity. Copy and paste into chats. Pure client.
Log which family member takes which medicine and when. Reminders for next dose. Data stays local.
Keep track of stitches and rows for your knitting projects. Multiple counters with increase/decrease shortcuts. Data saved in your browser.
Track daily mood with emoji selection and optional notes. See weekly/monthly mood trends in a color-coded chart. All data stored privately in localStorage.
Log period start dates and cycle length locally. Predict next period and fertile window. Data stays in your browser's storage, never uploaded. Private by design.
Log daily sleep to see cumulative sleep debt or surplus over weeks. Visualizes chronic sleep loss trends. Stores data locally in your browser only.
Visualize how caffeine decays in your body over time. Enter intake amount and see remaining caffeine at bedtime to optimize sleep. Uses standard 5-hour half-life.
Snap or type expense details and store them locally. Categorize and see monthly totals. No cloud, no sign‑up.
Measure your visual and auditory reaction speed. Average and best times shown. No data collected. Pure Javascript timing.
Keep track of a tennis match: points, games, sets, and deuce. Supports tiebreak. Great for friendly matches. Local.
Keep a simple list of movies you want to watch. Add notes and check them off. Purely local storage.
Add book titles and authors to a to‑read list. Move them to 'finished' and add a rating. Data saved locally.
Tap a glass icon each time you drink a cup of water. See your daily intake. Reminders optional. Local storage.
Convert a Unix timestamp or ISO date into a human‑friendly relative string like '2 days ago'. See examples.
Pick a color for each day's mood and see a month‑at‑a‑glance heatmap. Data stored locally. A private emotional log.