Accessible Chart Palette Builder – Online Data Visualization
Build a color palette for charts that works for protanopia, deuteranopia, and grayscale. Export as array.
UD5 Toolkit
Explore all 22 expertly crafted color palettes. Click any swatch to copy its hex code or class name.
bg-red-500, text-blue-700, or border-emerald-300. Also customize them in tailwind.config.js.Build a color palette for charts that works for protanopia, deuteranopia, and grayscale. Export as array.
Upload a small file to see each byte as a block, color-coded by value. Visualize the structure of binary data. Client-side.
Pick a color for each day's mood and see a month‑at‑a‑glance heatmap. Data stored locally. A private emotional log.
Display a dynamic list of keyboard shortcuts for the current browser and operating system. Filter by category. Keep it open for reference.
Paste a URL and see the og:title, description, image, and twitter card that will be used when shared. No server needed.
Paste simple G-code and see a 2D plot. Quick check before sending to machine. Local parser.
Build a horizontal scroll‑snap container with configurable snap‑type and alignment. Perfect for image galleries.
Identify the correct spline diameter needed to replace a window screen. Visual comparison and sizing tool.
Add artificial reverb to an audio recording. Choose from small room to large hall. Wet/dry mix. Convolution‑based.
Record shedding intensity and grooming sessions. Predict heavy molt periods. Reduce risk of wool block.
Learn to identify the 10 basic cloud types from photos. Self‑test quiz mode. Useful for pilots and hikers.
See the roving tabindex pattern in action. Use arrow keys to navigate a list. Copy the accessible JavaScript pattern.
Paste HTML and detect elements with aria‑hidden='true' that contain focusable children. An easy a11y win to fix.
Enter a URL and see a preview of how it will appear when shared on Facebook, Twitter, LinkedIn. Detect missing tags.
List of major annual meteor showers with next peak date and moon phase prediction. Stargazing planner.
Drop any file to see its raw hexadecimal representation and ASCII side‑by‑side. Navigate with offset. Client‑side only.
Look up front and rear wiper blade sizes by car model. Never buy the wrong length again.
View and edit ID3 tags of MP3 files, including title, artist, album, and artwork. All processing in your browser; no files uploaded.
Click a root key and chord type (Maj, min, 7th) to see the notes highlighted on a piano keyboard. Learn chords fast.
Log medications daily with dose, time. See missed doses. Reminder for refill date. Data local.
Paste a simple drum tab or select a pattern and hear it played. Learn drum set notation interactively.
Accurate online stopwatch with lap and split time capabilities. Start, pause, and reset. Ideal for sports and presentations. Runs natively in the browser.
Log your daily mood and view trends on a calendar. Encourages mindfulness. Data stored only in your browser's localStorage for complete privacy.
Select a date, time zone, and locale to see how it appears in various formats (long, short, etc.). Ensure correct i18n.
Enter material thickness and get the recommended pop rivet diameter and grip range.
Extract the thumbnail image for any YouTube video by pasting its URL. Download in multiple resolutions (HD, SD). Simple and fast.
Select a latitude to see a 2D sun path chart for solstices and equinoxes. Passive design tool.
Enter the initial amount, half‑life, and time to find remaining quantity. Nuclear science helper.
Enter log pile dimensions to calculate cords and face cords. Also estimate heat content in BTUs by wood species. Local reference.
Use trigonometric functions in CSS to create circular animations and layouts without JavaScript. See the code.