Flexible Typography

Community

Owl-Listener

flexible-typography

Design typography systems that adapt to user needs — scaling, spacing, and font preferences. Use when designing type systems, setting font sizes, defining line heights, or reviewing text readability across conditions. Triggers on: typography, font size, line height, letter spacing, word spacing, text scaling, dyslexia font, readable font, type scale, font units, rem, em, px, reading difficulty.

Overview

Publisher	Owl-Listener
Repository	`inclusive-design-skills`
Skill name	`flexible-typography`
Stars	108
Forks	28
Bundled files	Instructions only
License	MIT
Links	Skill source Repository

Markdown instructions
A SKILL.md file the model loads on demand, so it only costs tokens when a request actually matches.
Works with any LLM
AI skills are plain Markdown, not provider-specific code, so this works with GPT, Claude, Gemini, Grok, or a local model.
Self-contained
Everything the model needs lives in the instructions — no extra files to sync.
Open source
Published by Owl-Listener on GitHub. Read the source before you install it.

Installation

Install the Flexible Typography AI skill in TypingMind to use it with any LLM, or drop it into another agent that reads SKILL.md.

Install in TypingMind

TypingMind installs a skill straight from its GitHub folder — it reads SKILL.md, bundles the resource files, and stores the result locally.

Open the app and go to Plugins → Skills.
Choose "Install from GitHub".
Paste the skill folder URL below and confirm.
https://github.com/Owl-Listener/inclusive-design-skills/tree/main/adaptive-interfaces/skills/flexible-typography
Enable the skill in any chat where you want it available.

Store

Installed

Skills

Add skills

Import one or more skills from a public GitHub folder or a local .skill or .zip archive, or SKILL.md file.

From GitHub URLFrom .skill, .zip, or SKILL.md

GitHub repo or folder

https://github.com/Owl-Listener/inclusive-design-skills/tree/main/adaptive-interfaces/skills/flexible-typography

Points to a single skill folder, or any folder that contains multiple skills. Public repos only.

CancelContinue

Plugins → Skills → Add skill → From GitHub URL, then paste the folder URL and press Continue.

Install in another agent

Any agent that reads the Agent Skills format can use this skill — copy the folder into that agent's skills directory.

Claude Code — .claude/skills

git clone --depth 1 https://github.com/Owl-Listener/inclusive-design-skills.git /tmp/inclusive-design-skills
mkdir -p .claude/skills
cp -r /tmp/inclusive-design-skills/adaptive-interfaces/skills/flexible-typography .claude/skills/flexible-typography

Restart Claude Code after copying so it picks up the new skill.

Use it in TypingMind

Enable Flexible Typography in any TypingMind chat and the model takes it from there. Its name and description sit in the system prompt, and the moment a request matches, the model loads the full instructions itself — you never invoke it by hand, and it costs no tokens until it is actually used.

The model loads Flexible Typography on its own as soon as a request matches it.

Works with any AI model

AI skills are plain Markdown instructions rather than provider-specific code, so Flexible Typography is not tied to the model it was written for. Install it once in TypingMind and use it with GPT-5, Claude, Gemini, Grok, DeepSeek, Mistral, Llama, or a local model you run yourself — all on your own API keys.

Loaded only when it is needed
The system prompt carries just the name and description. The instructions are fetched on the first matching request, so an idle skill costs nothing.
Switch models mid-chat
Because the skill is instructions rather than code, changing model does not break it — the next model reads the same SKILL.md.

Skill instructions

This is the SKILL.md content the model loads. Read it before installing — a skill is instructions your model will follow.

Flexible Typography

Design type systems that flex with the user — scaling smoothly, spacing generously, and never breaking when someone needs text larger, more spaced, or in a different font.

Core Requirements

Relative Units Always

Use rem for font sizes (relative to root, user-controllable)
Use em for spacing that should scale with text
Never use px for font size — it overrides user preferences
Base font size: let the browser default (usually 16px) be your starting point, don't override it

Minimum Sizes

Body text: 1rem minimum (never smaller)
Small text / captions: 0.875rem minimum
Labels and UI text: 0.875rem minimum
If text is essential, it should be readable without zooming

Line Height

Body text: 1.5 minimum (WCAG requirement)
Headings: 1.2–1.3 (tighter is acceptable for large text)
Line height should scale with font size — use unitless values (1.5 not 24px)

Spacing

Paragraph spacing: at least 1.5× the font size
Letter spacing: don't compress below browser default
Word spacing: don't compress below browser default
Users must be able to override spacing without breaking layout (WCAG 2.1 Level AA, Success Criterion 1.4.12)

Design Patterns

Scalable Type Scale

Define a type scale using relative ratios (1.25, 1.333, 1.5)
Each step should be perceptibly different
4–6 sizes is enough for most interfaces
Example: 0.875rem, 1rem, 1.25rem, 1.5rem, 2rem, 2.5rem

User-Override Safe

Don't set fixed heights on text containers
Use min-height instead of height for elements containing text
Let containers grow when text grows
Test with: 200% text size, 200% zoom, extra letter and word spacing
If layout breaks at any of these, the CSS needs fixing

Font Selection

Prioritise readability over aesthetics
Sans-serif fonts are generally easier for screen reading (but this is preference, not rule — test with your audience)
Ensure the chosen font has:
- Clear distinction between similar characters (Il1, 0Oo, rn/m)
- Consistent x-height
- Adequate character spacing at default settings
Provide a font-family stack that degrades gracefully
Never prevent users from overriding with their preferred font

Dark Mode Typography

Reduce font weight slightly in dark mode (light text on dark backgrounds appears heavier than dark text on light)
Ensure contrast meets 4.5:1 minimum in both modes
Avoid pure white (#fff) on pure black (#000) — the extreme contrast causes halation for some users. Use off-white on dark grey instead

Assessment Checklist

All font sizes use rem or em, never px
Body text is at least 1rem
Line height is at least 1.5 for body text
Layout survives 200% text scaling without breaking
Layout survives user-applied letter and word spacing overrides
Text containers use min-height, not fixed height
Font has clear character distinction (Il1, 0Oo)
Both light and dark modes meet contrast requirements

Frequently asked questions

What does the Flexible Typography AI skill do?

Why use Flexible Typography on TypingMind?

Because you install it once and use it with any model. Flexible Typography is plain Markdown rather than provider-specific code, so the same skill runs on GPT-5, Claude, Gemini, Grok, or a local model — and you can switch model mid-chat without it breaking. TypingMind runs on your own API keys, so you pay providers directly instead of a per-seat subscription, and your skills and chats stay in your own storage.

How do I install Flexible Typography in TypingMind?

Open Plugins → Skills → Install from GitHub in TypingMind and paste https://github.com/Owl-Listener/inclusive-design-skills/tree/main/adaptive-interfaces/skills/flexible-typography. TypingMind reads its SKILL.md and installs it as a skill you can enable per chat.

Which AI models can use Flexible Typography?

Any model you connect in TypingMind. AI skills are plain Markdown instructions rather than provider-specific code, so GPT, Claude, Gemini, Grok, and local models can all load this skill when a request matches it.

How many AI models can I use with Flexible Typography?

As many as you like. As long as a model supports skills, you can use Flexible Typography with it — GPT, Claude, Gemini, Grok, DeepSeek, Mistral, Llama and more — all on TypingMind with your own API keys.

Is the Flexible Typography AI skill free?

Yes. It is published on GitHub by Owl-Listener under the MIT license. You only pay your own AI provider for the tokens you use.

What are AI skills?

An AI skill is a reusable instruction bundle that teaches an AI model how to do one specific task. It follows the open Agent Skills format: a SKILL.md file with a name and description, plus any scripts, templates or reference files the model may need. The model reads the instructions only when your request matches the skill, so an installed skill costs nothing until it is used.

How are AI skills different from plugins or MCP servers?

A plugin or MCP server gives a model new tools to call — code that runs somewhere and returns a result. An AI skill gives the model knowledge and process instead: how to approach a task, which steps to follow, what good output looks like. Skills are plain Markdown, so they need no server, no API key and no runtime, and they work with any model.

View all

Concept Diagrams

NousResearch

OrganizationPopular

Generate flat, minimal educational SVG visuals as HTML.

Hyperframes

Render MP4/WebM videos from HTML compositions.

Ip As Logo

Design minimal cute IP mascot marks readable at 32px.

Mono Color

Generate one- or two-ink editorial print poster images.

Overview

Installation

Install in TypingMind

Install in another agent

Use it in TypingMind

Works with any AI model

Skill instructions

Flexible Typography

Core Requirements

Relative Units Always

Minimum Sizes

Line Height

Spacing

Design Patterns

Scalable Type Scale

User-Override Safe

Font Selection

Dark Mode Typography

Assessment Checklist

Frequently asked questions

Related AI Skills

Set up your own AI workspace now