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.
UD5 Toolkit
page.js, layout.js define UI. It supports layouts, streaming, and server-first rendering by default.notFound() is called or no route matches..ts/.tsx.[slug] and the page component receives params prop. Optionally export generateStaticParams to pre-render static paths at build time.await, no need for getServerSideProps.Read, write, and delete cookies using the modern Cookie Store API. Monitor change events. No more document.cookie parsing.
Provide a hook name and select features (state, effect, callback). Get a complete React custom hook with TypeScript. Faster development.
Scale a classic homemade playdough recipe to any amount. Choose colors with safe options. Simple local calculator.
Enter a component name and get a basic Vue 3 Single File Component template with script setup. Fast scaffolding.
Store passwords and notes encrypted with a master passphrase. Data lives only in your browser's localStorage. No cloud.
Paste a raw cookie string and see a formatted key‑value table. Debug session cookies and understand flags. Runs in browser.
Apply tone mapping algorithms to bring out details in highlights and shadows. Simulate HDR from a single image.
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.
Experiment with the Async Clipboard API: read/write text and images from the clipboard. Verify permissions and see demo code.
Apply a tint remover that guesses the original colors from a sepia photo. Not perfect, but fun. All in canvas.
Check how many pages a PDF has without uploading it (uses FileReader). Also shows file size and title if available. Simple and fast client-side tool.
Generate the doGet() and doPost() boilerplate for a Google Apps Script web app. Ready to paste into the editor.
Enter a component name and generate a complete RTL test file with render, screen, and common assertions. Fast testing setup.
Generate a Nuxt 3 page component with script setup, metadata, and styles. For Vue.js developers. Copy the .vue file.
Create a Svelte single‑file component with script, style, and markup. Choose TypeScript or JavaScript. Copy the .svelte file.
Select which pages to rotate left or right. Save the corrected PDF immediately. All local manipulation.
Fetch a page and list all loaded assets (CSS, JS, images) with their sizes. See total page weight. Quick performance check.