Work Break Reminder - Online Eye‑Care & Stretch Timer
Set a timer that reminds you to take a break, stretch, or follow the 20‑20‑20 rule. Desktop notification supported. Runs offline.
UD5 Toolkit
Set a timer that reminds you to take a break, stretch, or follow the 20‑20‑20 rule. Desktop notification supported. Runs offline.
A sequence of digits flashes for a few seconds. Type it back. Increase length. Improve your working memory.
Set a date when a new fish arrives and get a daily checklist for observation. Countdown to safe introduction.
Write a short note and set a specific time for a browser notification reminder. Great for quick one‑offs. Local.
Play standard emergency whistle patterns (SOS, three blasts) using Web Audio. Learn signals for outdoor safety. Offline capable after load.
See current time in multiple pre-selected cities simultaneously with day/night indicators. No tracking, just a simple multi-clock.
Record audio from your microphone and save as WAV file. Visual waveform while recording. Simple and privacy-friendly; audio stays in your browser.
Browse a collection of common bird calls. Play short audio samples to identify birds you hear. Educational static data.
Display current time for multiple cities worldwide. Add and remove locations. See day/night indicator. Lightweight and always accurate.
Select bracelet type (chevron, candy stripe) and enter rows to estimate total embroidery floss needed per color. Reduce waste.
Log your daily water consumption with one click. Set a goal and track progress. Data stored locally for privacy. Simple and clean interface.
Format your SQL code with consistent indentation. Choose 2 or 4 spaces. No syntax validation, just neat output.
Enter hiding places and get a set of rhyming clues to print. Fun for kids' parties.
Play random Morse characters at configurable speed. Learn with Koch or Farnsworth method.
Use SSML <mark> tags to fire events during TTS. See text highlighted as it is spoken. Understand speech synthesis timing. local.
Select cities and see a 24-hour grid highlighting compatible meeting times. Drag to find a slot that works for everyone. Daylight saving aware.
Look up any HTTP status code and see its meaning, RFC reference, and example. Full offline reference.
Record a tick bite date and daily symptoms. Visual timeline to share with doctor. Private and local.
Hear a common bird song and choose the correct species from multiple choices. Ear training for birders.
Flashcards for learning Braille. See the dot pattern and type the letter. Track your speed and accuracy. Accessibility education.
Calculate the real monetary cost of a meeting by attendees' hourly rates. A humorous yet insightful productivity tool. All local calculation.
Type a passage and see it appear in a realistic cursive font. Helps connect handwriting to digital text.
Full scientific calculator with history tape, memory keys, and unit conversions. All in your browser, no install.
Modify the DOM via buttons and see MutationRecords logged. Understand childList, attributes, and subtree options.
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.
Select a country to see a concise list of cultural norms, greetings, and taboos. Be a respectful traveler.
Select a part of an audio file and trim it to the selection. Playback preview. Download the cropped audio. No upload.
Remove silent parts from an audio recording. Useful for podcasts and lectures. Set threshold and minimum silence duration.
See the current UV index forecast or enter a value to learn protection needed (SPF, hat, shade). Educational.
Browse a searchable list of standard HTTP request and response headers with explanations. Quick dev help.