Encrypted Daily Journal - Online Private Diary
Write daily notes encrypted with a password. All data stored in your browser. Export as encrypted file. True privacy.
UD5 Toolkit
Select a date from the calendar or click New to start writing.
All entries are stored securely on your device.
Write daily notes encrypted with a password. All data stored in your browser. Export as encrypted file. True privacy.
Write a message and set a future date. It will be hidden until that day. All stored locally with countdown.
A visual guide to common copy‑editing and proofreading symbols. Click a mark to see its meaning. For writers.
Enter any date and instantly know which quarter it belongs to. Also shows fiscal quarter if start month set.
Pomodoro timer that saves completed sessions to localStorage. View daily/weekly stats. Boost productivity with data.
Choose label type and get the best technique (baking soda, steam, milk) to remove it intact.
Add player names and tap +/- to track scores. Custom starting points. Works for any game.
Calculate tips and split bills easily. Adjust tip percentage and number of people. Perfect for dining out. All computations happen on your device.
Add N business days to a date, skipping weekends and optionally entering custom holidays. Regional presets.
Quick reference for what to do (and not do) after a snake bite. Pressure immobilization bandage diagram.
Set a short timer with a themed emoji animation (e.g., pizza cooking). A playful visual countdown.
Find out what day number of the year any date is (1‑366). Also shows days remaining. Simple reference.
Paste any JavaScript snippet and get a ready‑to‑drag bookmarklet link. Minify and encode automatically. Pure client.
Find what day of the week any past or future date falls on. Uses Zeller’s congruence. Fun historical reference tool.
Select a US state and legal category (debt, personal injury) to see typical time limits. Quick informational guide.
Define min and max font sizes and viewport widths. Generate a complete fluid type scale using CSS clamp() for all headings.
Type JavaScript expressions and see output like a real browser console. Supports console.log, error, warn. Use for quick testing without DevTools.
Enter min and max font sizes and viewport widths to generate a perfect CSS clamp() expression. Fluid typography without media queries.
Write a JavaScript snippet and get a ready‑to‑drag bookmarklet link. With minification and encoding. Easy browser tools.
A big button that triggers a colourful confetti cannon full‑screen. Use it to celebrate small wins. Pure joy.
Convert any date into Roman numerals (day‑month‑year) for tattoos or special occasions. Clean and local.
Convert any date into Roman numerals (day‑month‑year) for tattoos or special occasions. Clean and local.
Convert numbers to Roman numerals and decode Roman numerals back to numbers. Supports up to large values. A fun educational tool running entirely in your browser.
Select your racquet head size, string type, and play style to get a recommended tension range. Find your sweet spot.
Log daily temperature and humidity of your incubator. Get alerts when approaching critical days. Improves hatch rate.
Paste long text and split it into 2, 3, or 4 balanced CSS columns. Preview and copy HTML/CSS. For magazine layouts.
Calculate how many books, DVDs, or vinyl records fit on a shelf given its length and depth. Useful for home library planning. Local only.
Compute Poisson probabilities for a given mean rate. Ideal for call centers, traffic analysis. Instant chart.
Calculate resistor values for transistor fixed bias or voltage divider configuration. Quick quiescent point analysis.
Make your JavaScript code more readable with this online beautifier. Format and indent JS automatically. Works entirely in your browser, protecting your code privacy.