July 16, 2026

Pulse check: internet edition

My Homepage Has a Pulse

Developer puts real heartbeat on homepage and commenters are obsessed with the vibes

TLDR: A developer put his real heartbeat on his homepage to make his online presence feel more human, fully accepting the privacy tradeoff. Commenters loved the weirdness, joked that his low pulse is a fitness flex, and immediately turned the whole thing into death jokes and kitten fandom.

A developer has turned his homepage into a tiny live-life drama by adding a beating red heart that matches his actual pulse, pulled from the watch he wears basically all the time. His pitch is simple but weirdly intimate: forget the old green "online" dot, this is proof that he is literally alive right now. He knows it reveals a lot about his life—sleep, stress, travel, workouts, even when he is not home—and his response is basically a shrugging deal with it. That bold oversharing energy is exactly what made the comment section light up.

The reaction was a mix of admiration, copycat energy, and dark jokes. One commenter called it "a fun idea" and praised the clever trick of replaying yesterday’s pulse in real time, which lets the site feel alive without constant upkeep. Another immediately clocked the current number, joking that 48 beats per minute is a public flex showing the author is in great shape. But the most chaotic comment came from someone who said they’d built the same thing and wondered whether readers would notice their death before anyone in real life—an absolutely wild sentence that somehow matched the mood perfectly. Meanwhile, others got distracted by the site’s unexpected co-star: a kitten graphic so cute that one commenter politely asked for permission to steal it with browser inspect tools. In other words, the homepage heart may be the headline, but the real community verdict is: cool, creepy, adorable, and just unhinged enough to rule.

Key Points

  • The author added a homepage widget that displays and animates according to their actual heart rate.
  • The heart-rate data comes from a Garmin Descent Mk3i watch that the author also uses as a primary dive computer.
  • The article describes plans to potentially publish a broader personal metrics ledger including sleep, HRV, steps, calories, and workouts.
  • The author evaluated streamer-oriented heart-rate services using broadcast mode over BLE/ANT+ but rejected them due to battery-life and usability concerns.
  • The author also rejected Web Bluetooth for practical limitations and notes that Garmin Health API access is restricted by an application and review process.

Hottest takes

"demonstrating that the author is in pretty good shape" — bayesnet
"if I died would a reader know before anybody IRL would?" — kn100
"Looove your kitten" — saint-evan
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