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progressive-enhancement

Review web features for accessibility without JavaScript using layered HTML, CSS, and enhancements.

39|2|Updated Mar 28, 2026
Search Tags:#offline#responsive-design#semantic-html#progressive-enhancement#web-accessibility#graceful-degradation
One-click install
npx skills add https://github.com/mgifford/accessibility-skills --skill progressive-enhancement-mgifford
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: progressive-enhancement
Source: https://github.com/mgifford/accessibility-skills/tree/main/skills/progressive-enhancement
Command: npx skills add https://github.com/mgifford/accessibility-skills --skill progressive-enhancement-mgifford

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Ensure core content remains accessible without JavaScript and that web features degrade gracefully, preserving usability for all users and devices.

Core Features & Use Cases

  • Layered approach: semantic HTML as Layer 1, CSS enhancements as Layer 2, and JavaScript enhancements as Layer 3, with service workers for offline capability where appropriate.
  • Guidance for architecture decisions, performance, and sustainability, emphasizing SSR/static rendering when possible and offline resilience.
  • Real-world use: validate that a feature remains functional with JS disabled and provides a progressive enhancement path from core content to enhancements.

Quick Start

Start with semantic HTML for core content, add CSS to improve presentation, and progressively layer JavaScript enhancements only after ensuring core content and interactions work without JS.

Frequently Asked Questions about progressive-enhancement

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I make web content accessible without JavaScript?▼

To make web content accessible without JavaScript, start with semantic HTML as Layer 1 for core content, add CSS as Layer 2 for presentation, and apply JavaScript only as a Layer 3 enhancement to ensure graceful degradation.

What is the best way to build web features for offline and low connectivity environments?▼

Building web features for offline environments involves using semantic HTML for core content and optionally layering Service Workers to provide offline resilience. This ensures usability is preserved when connectivity drops.

How does progressive enhancement differ from graceful degradation in web accessibility?▼

Progressive enhancement builds accessibility from a semantic HTML base upward, adding CSS and JavaScript layers, whereas graceful degradation assumes full functionality and attempts to maintain usability when features fail or are unsupported.

Can I use service workers to improve web accessibility and offline resilience?▼

Yes, you can use optional Service Workers to improve web accessibility and offline resilience. They provide a graceful fallback mechanism on top of static or SSR rendering to satisfy strict accessibility requirements.

When do I need server-side rendering or static rendering for web accessibility?▼

You need server-side rendering or static rendering when ensuring core content remains accessible without JavaScript. This architectural choice preserves usability for assistive-technology constrained environments and supports sustainable performance.

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