Cookie String Parser - Online Decode & Format Browser Cookies
Paste a raw cookie string and see a formatted keyβvalue table. Debug session cookies and understand flags. Runs in browser.
UD5 Toolkit
Adjust batch size instantly β perfect for home, classroom, or party fun
Paste a raw cookie string and see a formatted keyβvalue 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.
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.
Experiment with the Async Clipboard API: read/write text and images from the clipboard. Verify permissions and see demo code.
Provide a hook name and select features (state, effect, callback). Get a complete React custom hook with TypeScript. Faster development.
Generate a Next.js page.tsx file with Server Component or Client Component. Layout and metadata included.
Apply a tint remover that guesses the original colors from a sepia photo. Not perfect, but fun. All in canvas.
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.
Calculate the exact number of days, weeks, months, and workdays between two dates. Visual calendar highlights. Perfect for projects.
Choose your cup size and sweetness level, and get exact proportions for tea, milk, syrup, and tapioca pearls. Perfect homemade boba every time.
Select ingredients you have, and get a simple recipe suggestion with steps. Local database. For emergency cooking.
Enter temperature and wind speed (or humidity) to get the 'feels like' temperature. Safety guidelines included.
Calculate resistor values for transistor fixed bias or voltage divider configuration. Quick quiescent point analysis.
Combine multiple identical batteries in series and parallel and see the resulting voltage and total capacity. Electronics helper.
Track your subscriptions, calculate monthly and yearly totals, and find savings by pausing unused services. Local data.
Determine the minimum sample size needed for a survey or A/B test with a given confidence level and margin of error.
Compute confidence intervals for a population mean (known/unknown sigma) and proportion. All popular Z/T values. Local.
Easily compute posterior probabilities given prior, likelihood, and marginal likelihood. Visual diagram. All local.
Enter a number to find its golden ratio long and short segments. Use for pleasing design layouts. Instant.
Calculate new dimensions while preserving aspect ratio, or find the ratio from width and height. For video and images.
Find out how large you can print based on image resolution in pixels. Understand DPI and megapixels.
Learn about fβstops and their effect on light and depth. Calculate equivalent exposure adjustments. Educational.
Find the CAGR of an investment given start and end values over a time period. Instant growth rate.
Calculate your running pace per mile/km, finish time for a race, and split times. Essential for runners.
Measure your waistβtoβhip ratio and learn about associated health risks. WHR interpretation. Educational only.
Find what day of the week any past or future date falls on. Uses Zellerβs congruence. Fun historical reference tool.
Enter two sides of a right triangle and get the third. Also gives area and perimeter. Simple and visual.
Find the centroid (center of mass) of any convex polygon by entering vertex coordinates. Useful for physics and design.