CSS sin(), cos(), tan() Demo - Online Animated Trig
Use trigonometric functions in CSS to create circular animations and layouts without JavaScript. See the code.
UD5 Toolkit
Interactive demo & code generator — explore scroll-snap-type, align, stop & more
center, the browser aligns the center of each snap item with the center of the scroll container. This creates a beautiful "spotlight" effect where the current item is perfectly centered while users can peek at the previous and next items. It's widely used in app store-like designs, featured content sections, and modern card carousels.
normal), a fast swipe or flick can skip past multiple snap points — the browser may "coast" through several items. Setting scroll-snap-stop: always on each item forces the scroll to stop at the very next snap point, preventing users from accidentally skipping content. This property is set on the child items, not the container.
scroll-padding (set on the container) offsets the snap position from the container's edges. This is essential when you have a fixed header, sticky navigation bar, or want breathing room around snapped items. For example, scroll-padding: 20px ensures items snap 20px away from the container boundary rather than flush against it. Use the slider above to see it in action!
-webkit-overflow-scrolling: touch for smooth momentum scrolling on iOS.
Use trigonometric functions in CSS to create circular animations and layouts without JavaScript. See the code.
Browse every Tailwind default color palette side by side. Click any shade to copy the hex or class. For rapid design.
Display a dynamic list of keyboard shortcuts for the current browser and operating system. Filter by category. Keep it open for reference.
Experiment with exponential, square root, and hypotenuse functions in CSS. See live computed values. Modern CSS math.
Extract the thumbnail image for any YouTube video by pasting its URL. Download in multiple resolutions (HD, SD). Simple and fast.
View and edit ID3 tags of MP3 files, including title, artist, album, and artwork. All processing in your browser; no files uploaded.
Find the correct spot to drill for a heel strap button. Interactive visual guide with measurements.
Generate flowing geometric art by layering sine waves with different frequencies, amplitudes, and colors. Download SVG.
Build a color palette for charts that works for protanopia, deuteranopia, and grayscale. Export as array.
Paste a URL and see the og:title, description, image, and twitter card that will be used when shared. No server needed.
List of major annual meteor showers with next peak date and moon phase prediction. Stargazing planner.
Enter drum diameter, depth, and material to find the shell's approximate fundamental note. For tuning reference.
Paste simple G-code and see a 2D plot. Quick check before sending to machine. Local parser.
Upload a small file to see each byte as a block, color-coded by value. Visualize the structure of binary data. Client-side.
Estimate monthly mortgage payments with amortization schedule. Input loan amount, interest rate, and term. All calculations performed securely on your device.
Calculate semester or cumulative GPA on a 4.0 scale. Add courses, credit hours, and letter grades. Instant calculation. No data storage.
Enter release height and speed to compute the optimal launch angle for maximum distance. Simple projectile model.
Remove clicks, pops, and crackle from audio recordings. Useful for digitizing vinyl. Threshold‑based local processing.
Select your OS, IDE, and programming language to generate a complete .gitignore file. No typing required.
Enter the initial amount, half‑life, and time to find remaining quantity. Nuclear science helper.
Answer questions about fit and follow visual tests to ensure your boots are the correct size.
Select the material you're drilling into and see the recommended point angle and lip clearance. Sharpen bits correctly.
Log your daily mood and view trends on a calendar. Encourages mindfulness. Data stored only in your browser's localStorage for complete privacy.
Full-featured scientific calculator with trigonometric, logarithmic, and exponential functions. Clean interface and keyboard support. No installation required.
Paste a simple drum tab or select a pattern and hear it played. Learn drum set notation interactively.
Find the date of Easter Sunday for any given year. Learn about the computus algorithm. Simple and accurate.
See the roving tabindex pattern in action. Use arrow keys to navigate a list. Copy the accessible JavaScript pattern.
Enter rolls remaining and household size to estimate weeks of supply. A humorous yet practical aid.
Identify the correct spline diameter needed to replace a window screen. Visual comparison and sizing tool.
Estimate due date from last menstrual period or conception date. Uses Naegele's rule and shows week-by-week milestones. Local calculator for informational use.