Padrail turns the edges of your MacBook trackpad into sliders: volume on the right, brightness on the left, keyboard light at the bottom, and a top edge that changes with the app (tabs, zoom, next track). Free, no account, lives in the menu bar.

Hey Product Hunt 👋

I kept reaching for the function keys to change volume and brightness on my MacBook, and I noticed the trackpad has four edges I never touch. So I built Padrail: slide one finger along an edge and it becomes a slider.

Right edge for volume, left for brightness (external monitors too), bottom for the keyboard light. The top edge changes with the app you're in: tabs in Safari and Chrome, zoom in Figma, next track in Spotify.

A few things people asked for in the first week are already in: the edges ignore you while you type or hold a click, you can pause it in games, and there's a volume cap for headphones.

It's free, no account, signed and notarized by Apple. I'd love to know what you'd put on the top edge, and anything that feels off.

I haven't tried it yet - will test soon. Great idea!
Personally, I would either leave the top edge as customisable or set it as seek forward/backward in media playback.

@utkarsh_tech Thanks! Both are already in 🙂 In Settings you can pick what the top edge does, Seek included, even per app.