keyboardTester.Click

PHP, JavaScript, HTML/CSS. End-to-end generalist. Comfortable with Web Audio API, MediaDevices, schema.org JSON-LD, and i18n. Learning Rust and modern frontend frameworks.

Web Audio API performance, INP optimization, locale-aware SEO across 9 languages, and how to make in-browser hardware diagnostics genuinely accurate vs approximate.

KeyboardTester.click — open-source browser-based hardware diagnostic suite. 90+ tools for keyboards, mice, monitors, audio, webcams. 9 languages. Zero install, fully client-side.

Conversations on browser-based hardware testing, JavaScript input event measurement, multilingual SEO, or PHP performance. Always happy to chat about open-source side projects.