Let's create a web browser!

This educational project hopes to grow over the next few decades, exploring/handling one slice of functionality at a time.

Topics we'll learn more about#

🔒 Optional mode where networking is off by default for cross-origin and after-the-initial-pageload traffic
🔒 Optional mode where JavaScript and WASM are only enabled for FLOSS polyfills of HTML-based general functionality (i.e. polyfills that support custom HTML elements/attributes that provide general functionality that you would otherwise have had to resort to JavaScript for)
🔒 Lower-latency APIs for spyware-blockers like uBlock Origin
🎨 Canvas2D: WASM integration, additional rendering modes (including float-based HDR)
🎹 Web MIDI: virtual ports, defining reactions/sequences that emit MIDI messages to those virtual ports in immediate reponse to messages from a real keyboard, some basic MIDI-to-audio synth, proposing instrument/sequence configurations for external synth devices/apps (e.g. Zynthian or MainStage)
#️⃣ Support for various content-based fragment identifiers, going beyond URL Fragment Text Directives
📋 Support for screenshotting / scrapbooking / highlighting / fragment-bookmarking, e.g. with PNG files that contain pixels plus custom PNG chunks with whatever subset you want of additional context

Cross-platform command-line interface, via Node.js + WASM
Visual UI on GNU/Linux/BSD/Serenity
Visual UI on macOS (ft. Core MIDI and WKWebView, but otherwise avoiding non-open SDKs as much as possible)
Maybe support a subset of functionality on {RP2040, ESP32-C6}-level platforms

Create registries for the "FLOSS polyfills of HTML-based general functionality" mentioned above