Random Accessible Palette Generator - Online WCAG Safe
Generate a random 5‑color palette where every adjacent pair passes WCAG AA contrast. Safe for inclusive designs.
UD5 Toolkit
Upload any photo and instantly get its dominant colors – perfect for designers, artists, and branding.
or click to browse (JPEG, PNG, WebP, BMP)
Max file size: 10MBGenerate a random 5‑color palette where every adjacent pair passes WCAG AA contrast. Safe for inclusive designs.
Implement a dark/light theme toggle that respects prefers‑color‑scheme. Copy the complete JavaScript and CSS.
Load images or use colors and apply all 15 CSS blend modes. Visual tester for creative effects.
Paste your stylesheet and get a clean list of all custom properties defined under :root. Copy the whole block. Local analysis.
Manipulate CSS values as typed objects using attributeStyleMap. Convert between CSSUnitValue, CSSMathSum, etc. Futuristic CSS‑in‑JS.
Reset native styling on form elements with appearance: none. See before and after. Essential for custom forms.
Paste your CSS and get a sorted list of all custom properties defined under :root with their values. Quick audit.
Test the new style() function inside @container to query custom property values. Revolutionary component‑based responsive design.
Apply will‑change to any element and see its effect on compositing. Learn best practices for smooth animations.
Access the Paint Timing API and display First Paint, First Contentful Paint, and Largest Contentful Paint times. Quick perf check.
Paste your CSS and see rules sorted by specificity. Find overrides and potential collisions. Understand your cascade.
Apply user‑select: none, text, all and see how it affects selection. Copy the CSS snippet for your UI elements.
Register a custom CSS property with syntax, initial value, and inherits. Animate colors and numbers that couldn’t before.
List all resources loaded by the current page and their detailed timing breakdown. In‑browser waterfall.
Connect to a BLE device and read its Battery Service characteristic. See the charge level in a gauge.
Swap between physical and logical properties (margin‑inline vs margin‑left). Live preview with writing‑mode. Internationalize your CSS.
Set an alarm relative to today's sunset (e.g., 30 minutes before). Perfect for evening routines. Uses geolocation (optional).
Get a random, unique superpower with a detailed description and limit. Perfect for character creation or daydreaming.
Paste a raw server log snippet and see a structured table with IP, method, URL, and status. Quick audit.
Enter a URL and instantly generate a PDF version using the browser's print-to-pdf engine. Private, no upload.
Enter a URL and instantly generate a PDF version using the browser's print-to-pdf engine. Private, no upload.
Identify dog breeds from silhouettes or partial images. Score tracking. Fun for all ages. Local only, no images uploaded.
See every HTML input type in one page. Check browser support and styling. Copy sample markup. Quick frontend reference.
Set up multiple @layers and use revert‑layer to fall back. See the computed style and cascade resolution live.
A completely black page to save battery on OLED devices. Click to go fullscreen. Simple utility.
Create promises that resolve or reject after a delay. See state changes and chain .then/.catch. Debug async code.
Calculate flour, water, starter amounts to achieve a target loaf hydration. Adjusts for starter hydration. Instant local calculation.
Enter network name and password to generate a stylish printable card for visitors. Local, no data leak.
Estimate how long a battery will last given capacity (mAh/Wh) and load current. Also computes backup time for power banks. Quick and local.
Estimate arrival time with driving duration, breaks, and time zone changes. Plan your road trip precisely.