UD5 Toolkit
Clipboard API Tester - Online Read & Write Sandbox
Experiment with the Async Clipboard API: read/write text and images from the clipboard. Verify permissions and see demo code.
Quick Notepad - Online Private Note Taker with Auto Save
Frequently Asked Questions
Absolutely. Everything you type stays in your browser’s local storage. No data is sent to any server or third party.
No, because the notes are saved locally in your current browser. To move a note, use the download button and transfer the .txt file.
Clearing cookies and site data will delete your saved note. We recommend downloading important content regularly.
As you type, changes are automatically saved to localStorage after a brief pause. You can close the tab and reopen it later – your text will be there.
LocalStorage can hold 5–10 MB of text, which is roughly hundreds of pages. The live word counter helps you track length.
Once the page is loaded, the notepad works completely offline. No network requests are made while you type.
Local Password Vault - Online Encrypted Browser Storage
Store passwords and notes encrypted with a master passphrase. Data lives only in your browser's localStorage. No cloud.
Text to Vue SFC Skeleton - Online Quick Single File Component
Enter a component name and get a basic Vue 3 Single File Component template with script setup. Fast scaffolding.
Sepia to Color Restorer - Online Approximate Original
Apply a tint remover that guesses the original colors from a sepia photo. Not perfect, but fun. All in canvas.
Cookie Store API Tester - Online Async Cookie Read/Write
Read, write, and delete cookies using the modern Cookie Store API. Monitor change events. No more document.cookie parsing.
Tone Mapping Tool - Online Local HDR to LDR
Apply tone mapping algorithms to bring out details in highlights and shadows. Simulate HDR from a single image.
React Custom Hook Scaffolder - Online Code Generator
Provide a hook name and select features (state, effect, callback). Get a complete React custom hook with TypeScript. Faster development.
Cookie String Parser - Online Decode & Format Browser Cookies
Paste a raw cookie string and see a formatted key‑value table. Debug session cookies and understand flags. Runs in browser.
Playdough Recipe Calculator – Online Adjust Batch Size
Scale a classic homemade playdough recipe to any amount. Choose colors with safe options. Simple local calculator.
Next.js Page Boilerplate - Online App Router Setup
Generate a Next.js page.tsx file with Server Component or Client Component. Layout and metadata included.
Gratitude Journal with Daily Prompts - Online Private Diary
Write a private gratitude entry guided by daily reflective prompts. All entries stored only in your browser with optional export as text file. No account needed.
Menstrual Cycle Logger - Online Private Period Tracker
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.
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.
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.
Web MIDI Keyboard Tester - Online Visual Note Display
Connect your MIDI keyboard and see pressed notes visually on a piano roll. Check velocity, channel, and aftertouch. No DAW needed.
Meeting Notes Filler - Online Structured Agenda & Minutes
Fill in a pre‑designed meeting notes template and copy as formatted HTML or plain text. Quick documentation.
Bass Fretboard Trainer - Online Note Recognition Game
A random note name appears; click the correct position on the bass fretboard. Beat your time and accuracy.
Simple Online Journal - Private Daily Notes & Diary
Write and store encrypted daily journal entries directly in your browser's localStorage. Export as TXT. No sign-up, fully private.