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
Click "Add Event" above to start building your visual history chart.
Build a color palette for charts that works for protanopia, deuteranopia, and grayscale. Export as array.
Interactive soprano recorder chart showing which holes to cover for each note. Switch between baroque and German fingering.
Click a note on the staff and see a visual diagram of the flute keys to press. Supports common alternate fingerings.
Browse all official LEGO colors with names, years, and hex codes. Sort by hue. Perfect for builders.
Sortable list of cooking oils with smoke points and best uses. Choose the right fat for the right heat.
Look up pilot hole and clearance hole sizes for wood screws. Conversion between gauge and mm.
Display an astigmatism dial and instructions for self-assessment. Educational, not a medical diagnosis.
Click cells to see patterns, highlight multiples. Visual way to learn multiplication. Print empty grid.
Interactive table showing common fractions and their decimal/percentage equivalents. Click to highlight.
Visual chart showing the typical colors a bruise goes through from red to yellow. Educational only.
Visual reference for common seam allowances (1/4″, 5/8″, etc.) with actual size on screen. Essential sewing aid.
Reference for standard blanket and afghan sizes in inches and cm. Perfect for knitters and crocheters.
Record daily systolic/diastolic readings and pulse. See a trend chart. All data saved locally in your browser.
Look at a color‑coded BMI table for your height and see the healthy weight range. Simple reference.
Pomodoro timer that saves completed sessions to localStorage. View daily/weekly stats. Boost productivity with data.
Create animations that progress with scroll position. Experiment with animation‑timeline and view‑timeline. Cutting‑edge CSS.
See a live bar chart of character frequencies as you type or paste text. Great for cipher cracking and linguistics.
Searchable grid of all named HTML character entities with previews. Click to copy &, <, © etc. For web devs.
Create .srt subtitle files manually by adding lines and setting times with a simple player. Download the result. Local.
A small widget that records your clipboard text history (only while open). Search and re‑copy old snippets. No log upload.
Drag emotion word cards onto a canvas to visualize your day. Mix and match. Screenshot to share. Therapeutic.
See a list of notable historical events that happened on this day across years. Static data, no API needed.
See the healthy weight range for your height using standard BMI chart. Gender‑specific data. Quick reference.
Convert a photo into a color‑reduced embroidery or cross‑stitch pattern with DMC thread colors. Adjust size and palette. Print chart.
Create a simple seating chart by dragging desk icons and assigning names. Print or screenshot. Perfect for teachers.
Get a random history fact or see what major events happened on this day. Curated from public domain sources. Local.
Scroll through an interactive timeline of cameras from camera obscura to modern DSLR. Photos and facts.
Flip a coin and track your full history. See percentage of heads/tails and longest streak. Pure RNG, no bias.
Create a simple poll with multiple options and share a unique link. Votes stored anonymously via backend-free URL hash. Quick and free.
Draw pixel art on a canvas grid, choose colors from palette, and export as PNG. Fun for game assets and retro artworks. All drawn data stays in your browser.