Interactive Color Wheel - Online Learn Color Theory
An interactive color wheel that teaches primary, secondary, tertiary colors, and harmonies. Pick and mix like a pro.
UD5 Toolkit
Discover beautifully rendered physics equations ā click to explore
F = G\frac{m_1 m_2}{r^2}). Paste it into any LaTeX editor, Overleaf project, or Markdown document with math support.An interactive color wheel that teaches primary, secondary, tertiary colors, and harmonies. Pick and mix like a pro.
Generate a small logic puzzle grid (like Einsteinās riddle) with clues. Solve in browser or print. Local generation.
Generate a random profession or skill set for RPG characters (blacksmith, alchemist, etc.). With relevant items.
Hit the popping moles as fast as you can before they disappear. Increasing difficulty. Great for handāeye coordination. Browser only.
Select ingredients you have, and get a simple recipe suggestion with steps. Local database. For emergency cooking.
Create a random video game premise with a setting, protagonist, and twist. For game jams and creative writing. All local.
Get three random words as a creative writing prompt. Challenge yourself to use them in a story. No repeat for a while.
Adjust ISO, aperture, and shutter speed sliders and see how it affects the exposure of a sample scene. Learn photography basics.
Generate a silly or absurd company policy item. Perfect for a quick laugh during a dull meeting. Local fun.
Build a small crossword by adding words and clues. Export as a printable grid or solve in browser. Perfect for classrooms.
Enter two hex colors and compute the CIE76, CIE94, and CIEDE2000 color difference. Understand how humans perceive color similarity.
Generate a random art style name (e.g., 'Baroque cyberpunk oil painting') for inspiration or AI image generation.
Create unique magic spell names with descriptions. Perfect for Dungeons & Dragons and creative writing.
Generate ultra-secure, random passwords with configurable length and character sets. Created entirely on your device; never transmitted or stored.
Enter a list of words and create a custom word search grid. Choose difficulty, print or export as PDF. Great for teachers.
Quick reference of common shutter speeds and when to use them (freeze motion, long exposure). Static photographic guide.
Create a custom crossword grid with rotational symmetry. Set grid size and click to place black squares. Export as template.
Convert pixel values to viewportārelative units (vw, vh, vmin, vmax) based on a selected breakpoint. Precise responsive design.
Generate random but realisticālooking data arrays (users, products, orders) with typos and missing fields. For test robustness.
Visualize how aperture, focal length, and subject distance affect background blur. Interactive DOF calculator.
Build a CSS media query by selecting feature, operator, and value. Copy the exact syntax for your stylesheet.
Create a frightening or silly disease name for your story or TTRPG. Includes symptoms and transmission. Pure imagination.
Toggle imageārendering: auto, pixelated, crispāedges on a scaled image. Essential for pixel art display.
Get a random adorable dog picture. Breed info shown if known. Pure mood booster. Clientāside API call.
Upload an image and turn it into a simple digital jigsaw puzzle. Choose number of pieces. Play on screen.
Enter the URL of any image and receive a random harmonious palette extracted from it. Click to regen. For quick inspiration.
Open a test video in PictureāināPicture mode. Control entering and leaving PiP. Copy the code snippet for your own app.
Learn about fāstops and their effect on light and depth. Calculate equivalent exposure adjustments. Educational.
Generate the MD5 hash of any text string. For quick integrity checks. All local computation.
Visually name grid areas in a table and generate gridātemplateāareas CSS. Perfect for complex layouts. Dragāfree.