Real-time AI captions and translation for any browser video
Overline is a Chrome extension that adds real-time AI captions and live translation on top of any browser video, no subtitles needed, no tab switching. Works on YouTube, Netflix, Twitch, Zoom, or any tab. Sub-second latency. Translation is optional and per-session. No page injection, no file uploads, pure live audio streaming.
Hey PH! Mehdi here, builder of Overline.
The idea came from watching live news coverage with human interpreters doing real-time translation. They miss things, they slow down, and they're not available on a random YouTube video at 11pm. I thought this should be a solved problem, so I built it.
The hardest part was latency. Most transcription tools batch audio into chunks and upload them, you get a 5–10 second lag. Overline streams audio directly so captions appear as words are spoken.
It's been on the Chrome Store for a few weeks, ~2,000 users so far. Happy to answer anything. And if something breaks, tell me here, I'll fix it fast. :)
About Overline on Product Hunt
“Real-time AI captions and translation for any browser video”
Overline launched on Product Hunt on June 2nd, 2026 and earned 81 upvotes and 3 comments, placing #19 on the daily leaderboard. Overline is a Chrome extension that adds real-time AI captions and live translation on top of any browser video, no subtitles needed, no tab switching. Works on YouTube, Netflix, Twitch, Zoom, or any tab. Sub-second latency. Translation is optional and per-session. No page injection, no file uploads, pure live audio streaming.
On the analytics side, Overline competes within Chrome Extensions, Productivity and Artificial Intelligence — topics that collectively have 1.2M followers on Product Hunt. The dashboard above tracks how Overline performed against the three products that launched closest to it on the same day.
Who hunted Overline?
Overline was hunted by Mehdi. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of Overline including community comment highlights and product details, visit the product overview.
Mehdi