Minicharts
ways to draw your numbers
Give it your numbers and it draws the chart as something from your own subject, like your spending as a pie of coins. Drawn by hand, to scale, and touchable.
Free skill · paste into your terminal
mkdir -p ~/.claude/skills && curl -fsSL https://april-zhu.com/minicharts/minicharts.tar.gz | tar -xz -C ~/.claude/skillsOn Claude.ai? Download the .skill file and upload it under Settings → Capabilities → Skills.
Want to draw how something works, step by step? Try Tinycharts →
All chart types
Every type, A to Z. Here, for fun, each one is drawn as its own name: a pie chart as a pie, a waterfall chart as a waterfall. With your data, the skill draws your subject instead. Touch any part: the numbers are made up, but every slice, bar and dot is to scale.
One chart, many subjects
This is how the skill works with your data: the chart keeps its form, and your subject decides what it is drawn as. A pie chart of an umbrella shop's sales becomes an umbrella seen from above; a pie chart of a power bill becomes the face of an electricity meter. Here are charts, each drawn for three different subjects.
early bird, first 100
Minicharts stays free. If you like the way it draws, All Access is every pack in the Shop, and everything I make next.
Get it
Free
All chart types, the drawing kit, the 54 example drawings, and a checker that looks at every chart before you see it. MIT licence: use it for anything, including client work.
mkdir -p ~/.claude/skills && curl -fsSL https://april-zhu.com/minicharts/minicharts.tar.gz | tar -xz -C ~/.claude/skillsOr download it: .skill file for Claude.ai, .zip for anywhere else.
How to use it
You tell AI
- 1Your subject
What the numbers are about. It decides what the chart is drawn as.
my freelance taxes for 2025 - 2Your data
A CSV or Excel file, cells pasted from a sheet, or numbers typed in. Blank rows, currency signs and brackets are fine.
freelance-tax-2025.csv156 rows - 3A chart type optional
Name one, like a waterfall or a pie, or leave it out and AI picks the type that fits your question.
left to AI
Here is my 2025 freelance tax sheet. Where did my deductible expenses go?
AI draws
Your data, drawn as something from your subject, in a chart type that suits it. AI picked a treemap and made it a shoebox of receipts, each compartment to scale. Touch one.
Questions
What tools do I need?
Claude Code, or Claude.ai with skills switched on. The chart opens in any browser.
Is this part of Tinycharts?
No, they are separate skills that share a look. Tinycharts draws how something works, with a statechart behind each sheet. Minicharts draws your numbers, each chart as a real thing.
Do I need to code?
No. You describe what you want drawn, and Claude builds the page.
Are the charts accurate?
Yes. Slices, bars, dots and stacks are drawn to scale from your numbers, even when the chart is a pie or a stack of coins.
Can I use it in client projects?
Yes. Minicharts is free under the MIT licence, so you can use it, and the charts you make, in personal and commercial work.