Encrypted Note Taker - Online Write & Encrypt in Browser
Write notes that are encrypted in your browser before saving to localStorage. Only accessible with your passphrase.
UD5 Toolkit
Write notes that are encrypted in your browser before saving to localStorage. Only accessible with your passphrase.
Write an encrypted letter to your future self, protected by a password. No server. Pure local Crypto.
Generate strong, memorable passphrases using the Diceware word list (EFF). Choose number of words. Cryprographically random selection. Privacy guaranteed.
View, edit, and manage JSON objects saved in your browser's localStorage. Delete, export, or import keys. No setup.
Generate a BLAKE3 hash of any text or file. Extremely fast. Perfect for checksums and content addressing. Local.
A GUI to manage all keys in your browser's localStorage. Add, delete, edit, and export data. Debug progressive web apps.
Paste a raw cookie string and see a formatted key‑value table. Debug session cookies and understand flags. Runs in browser.
Read, write, and delete cookies using the modern Cookie Store API. Monitor change events. No more document.cookie parsing.
A minimalist text notepad that auto-saves to your browser's localStorage. No ads, no signup, no data leaves your device. Perfect for quick ideas.
Enter current and new loan details plus closing costs to see how many months to break even on a refinance.
See which fonts map to generic families (serif, sans‑serif, monospace) on different operating systems. A handy reference.
Check if your browser and display support the wider DCI‑P3 color space. See the difference with a simple test pattern.
Convert a Unix timestamp or ISO date into a human‑friendly relative string like '2 days ago'. See examples.
Create gradient‑filled text with the background‑clip property. Choose linear or radial gradients. Get the CSS. Modern typography.
Paste HTML and copy the formatted rich text to your clipboard. Paste directly into Word or Google Docs with styles intact.
Perform arithmetic on fractions and get simplified results. Handles mixed numbers and improper fractions. Step-by-step display. Educational and precise.
Paste a `Set‑Cookie` header and see all attributes parsed: domain, path, Max‑Age, SameSite, Secure, HttpOnly. Debug cookies easily.
Generate a Nuxt 3 page component with script setup, metadata, and styles. For Vue.js developers. Copy the .vue file.
Enter starting room temp, target temp, and method to see how many minutes to chill your wine perfectly.
Parse a JSON array and generate SQL INSERT or UPDATE statements. Perfect for data migration. Client‑side only.
Press any key combination and record the sequence. Export as JSON or human‑readable text. Perfect for documenting shortcuts.
Add items with category, color, season. Plan outfits. Drag and drop. Stored locally.
Compute confidence intervals for a population mean (known/unknown sigma) and proportion. All popular Z/T values. Local.
Create a breadcrumb schema for your website. Fill in the pages and get the ready‑to‑paste JSON‑LD snippet for rich results.
Play a virtual piano keyboard using mouse or computer keys. Sustain and octave control. Record and play back your tune.
Add semi-transparent text watermark to images. Customize position, opacity, rotation, and font. Batch processing with instant download. Fully local & private.
Scale a recipe to serve a crowd and calculate container sizes needed. Meal prep helper.
Provide a hook name and select features (state, effect, callback). Get a complete React custom hook with TypeScript. Faster development.
Convert comma‑separated data into a series of SQL INSERT statements. Define the table name and column order. Local.
Experiment with the Async Clipboard API: read/write text and images from the clipboard. Verify permissions and see demo code.