Accessible Form Builder - Online Semantic HTML Generator
Create a fully accessible form by adding fields; the tool generates the proper labels, inputs, and ARIA attributes. Copy the clean HTML.
UD5 Toolkit
Online Animated Paper Folding Guide — Step by Step
Create a fully accessible form by adding fields; the tool generates the proper labels, inputs, and ARIA attributes. Copy the clean HTML.
Enter pot volume and tea type to find the right amount of dry leaf considering expansion. Avoid overflowing.
Enter current weight and age to estimate adult weight based on growth curves. For purebred and mixed.
Draw a digit (0‑9) on the canvas and a simple neural net guess the number. Educational demo. No upload.
Drag colored shapes to matching outlines. Simple, no-text game for 2-4 year olds. Works on touch devices.
Convert English text to Braille (Grade 1 and simple Grade 2 contractions). Educational tool to understand Braille representation. Local only.
Upload any image, add a thick white border and drop shadow, and turn it into a sticker. Download as transparent PNG.
Request HID devices and list them. Read input reports and send output. For custom hardware and controllers.
Reverse entire text, flip letters, or reverse word order. Fun for puzzles and creative writing. Instant transformation without data leaving your browser.
See how a PWA can extend content into the title bar area on desktop. Customize the window controls overlay.
Click colors on an interactive wheel and see the common emotions and meanings associated with them. A design resource.
Estimate the baby's due date based on last menstrual period (LMP) or conception date. Also shows current week and trimester. Educational only.
Convert carabiner strength from kN to kg/lbs and understand Major Axis vs Minor Axis markings. Quick educational reference for climbers.
Test the experimental Translation API to translate text between languages directly in the browser, without cloud calls. Check support and copy the JavaScript starter.
Shift the color temperature of your photo towards warm (orange) or cool (blue). Instant canvas filter. Download result.
Enter any number up to trillion and get the English word representation. For filling out checks or legal documents.
Reverse every word in a sentence individually while keeping the word order. 'Hello World' becomes 'olleH dlroW'. Simple fun.
Paste an HTML snippet and check for common ARIA mistakes: missing labels, invalid roles, and aria‑hidden misuse. Educate your team.
View the moon phase for any date in past or future. See full moon dates and eclipses for a given year.
Validate a language tag like en‑US or zh‑Hans against the IANA registry. Ensure correct HTML lang attribute.
Paste a WebVTT file and instantly check for syntax errors. Validate timestamps and cue formatting. Essential for video devs.
Pick a base color and generate a 10‑step scale where each step meets a specific contrast ratio against white or black. Export as CSS custom properties.
Search common dream symbols and their traditional meanings. For entertainment and self-reflection. Static data.
Flip a coin with adjustable bias (e.g., 70% heads). Used for random decision-making when you want to gently influence outcomes. History & stats shown.
Enter original and target color to compute the exact CSS hue‑rotate(deg) filter needed. For precise icon and image tinting.
Play infinite sound loops of white, pink, brown, blue, and violet noise. Volume control. Help focus or mask tinnitus.
A big button that triggers a colourful confetti cannon full‑screen. Use it to celebrate small wins. Pure joy.
Add N business days to a date, skipping weekends and optionally entering custom holidays. Regional presets.
Convert volume and capacity units: gallon (US/UK), liter, milliliter, cup, and fluid ounce. Handy for cooking and science. Works entirely offline.
Fetch a site’s HSTS header and validate its syntax, max‑age, and subdomain flags. Ensure your site enforce HTTPS.