ascii PWA

A standalone, dependency-free ASCII art app. Rendering, copying and downloads work entirely in the browser. After the first successful online visit, the service worker caches the interface for offline use. Fonts are cached only when selected; previously used fonts remain available offline. No Python, API, CDN, package installation or build step is needed.

Run locally with npm start (or node serve.mjs), then open http://localhost:8080. Run checks with npm test.

Deploy this directory to any HTTPS static host. The relative paths support both an origin root and a subdirectory such as /pwa/. Serve index.html, sw.js and the manifest with Cache-Control: no-cache. Serve sw.js as JavaScript. The included development server applies these headers. Direct file opening does not support service workers; use localhost or HTTPS.

The full font collection from FIGlet.js 1.8.2 is bundled locally, alongside the original compact bitmap style. FIGlet.js handles rendering, with font-specific character support and wrapping at 80 columns. Text is limited to 500 characters. Text links use ?text=...&font=...; lowercase font names in older links are also accepted. Text renders automatically as you type or change fonts. Previous/next buttons cycle through the collection, and the last selected font is remembered. An explicit font in a shared link overrides the saved preference. The logo and installed app launch open the homepage. Text is not saved or sent to a server.

English/Turkish and light/dark/system preferences are stored locally when storage is available. Your supplied SVG is the favicon and logo, with vector rendered PNG installation icons and separate maskable artwork.

When changing any shell asset, bump VERSION in sw.js. The new worker caches the entire shell before offering an update. Accepting the update reloads open clients; closing all existing app tabs also permits activation. Shell cleanup only removes old versions for this app and installation scope. Previously used fonts live in a separate cache pinned to the FIGlet.js version and survive shell updates. A font you have never used needs a connection on its first selection.

Use the browser install action when available. On iOS, use Safari’s Share → Add to Home Screen. Installation and device splash rendering need on-device checks.