I built Feelr because performance tools tell us what is slow, but not what that slowness actually feels like to a user.

Paste a URL and Feelr replays the page load as a sensory experience: DNS, TLS, TTFB, HTML parsing, JS execution, and third-party scripts are expressed through timing, interaction resistance, and optional sound / haptic cues.

The goal isn’t measurement accuracy or optimization advice — it’s intuition. After using it, you start noticing where “heavy” actually comes from.

There’s also a simple Compare mode to feel two sites back-to-back.

No signup. No accounts. Minimal data. Just a small experiment.

I’d love feedback from people who think a lot about performance.