Every time I didn't understand something online, I had the same workflow: Copy. Open ChatGPT. Paste. Come back. It completely broke my focus. So I built Kogvio. Highlight anything on a webpage or PDF, ask questions instantly in context, and continue learning without leaving the page. Whether it's documentation, research papers, medical textbooks, or technical diagrams, Kogvio helps you understand—not just search.
Hey Product Hunt!
I'm Harshit, the solo founder behind Kogvio.
The idea came from something I was doing dozens of times every day.
I'd be reading documentation, research papers, medical textbooks, or technical articles, and every time I got stuck, my workflow looked like this:
• Copy the text
• Open ChatGPT
• Paste it
• Wait for an answer
• Go back to where I was reading
It completely broke my focus.
So I started wondering...
Why can't AI live where I'm already learning?
That's why I built Kogvio.
Now I can simply highlight anything on a webpage or PDF, ask questions instantly, generate mnemonics, simplify difficult concepts, or dive deeper without ever leaving the page.
Over the past few months I've been refining Kogvio based on real usage, and today I'm excited to finally share it with everyone.
I'd genuinely love your feedback.
The detail that makes this credible to me is that diagrams go through a pure vision model reading the actual pixels — not DOM-scraping the nearby text. Most in-page tools quietly fall back to caption-grabbing and fall apart the second a figure has no caption.
Coming from browser automation, that DOM-vs-vision call is exactly the thing people get wrong. And keeping the capture to just the highlighted bounding box to stay fast and cheap is the right instinct.
The highlight-in-context flow on a PDF or docs page is the part I would actually keep installed — that copy, open ChatGPT, paste, come back loop is exactly the focus-killer you describe. Before trusting it on technical or medical material I would want to know the data boundary: when I highlight a selection, does it send just that selection to the model or grab the surrounding page/PDF context too, and is any of that page content retained server-side per query or is it stateless? For sensitive docs that is the difference between leaving it always-on and only enabling it on tabs I trust.
Congrats, Harshit! Fellow extension builder here — quick one on “your data stays yours”: since scans save to a workspace and diagrams go through a vision model, is highlighted content sent per-request only (not used for training), and can I delete a scan? That’s what decides whether I’d keep an in-page AI tool always-on.
honestly this solves something that's bugged me for ages. one thing that would make it even better is keyboard shortcuts to highlight and summon the popup without needing the mouse, basically so you stay in flow while reading long PDFs or docs. right now i imagine reaching for the trackpad breaks that focus you're trying to preserve.
Finally, something that doesn't make me bounce between tabs like a pinball. Highlighted a dense section of a research paper and got a clear answer right there without losing my place.
Highlighted a dense section of a medical textbook and the in-context answer actually clarified the terminology without me having to switch tabs. Took a little fiddling to enable it on a PDF but once it clicked, the workflow felt way smoother than my usual copy-paste routine.
been wanting something like this for a while honestly, the copy paste dance into chatgpt is so annoying. one thing though, it would be really nice if you could save snippets or highlighted passages into a little notebook inside the extension so i could come back to them later without losing track. like a quick personal knowledge base built up as i browse.
Would love to see a quick keyboard shortcut to toggle Kogvio on and off without losing my highlight. Right now I have to reach for the mouse every time, which kinda defeats the staying-in-flow part.
honestly the highlight-and-ask flow sounds really clean. one thing i'd want though, basically a keyboard shortcut to open the side panel so i'm not hunting for a small button every time. something like cmd+shift+k would make it feel instant and keep my hands on the keyboard.
the highlight-and-ask-in-context flow is exactly the kind of friction removal that actually gets used daily instead of abandoned after a week. for something like a long research paper, does it feed the whole document as context or just the surrounding section you highlighted? that tradeoff between accuracy and cost seems like the hard part to get right.
Harshit, what makes it different from the Comet or Chrome browser capabilities?
the copy-paste-back workflow is such a small tax but it adds up over a day of reading docs. how does it handle technical diagrams specifically, is it reading the image content too or mostly working off the surrounding text
Love that it works on PDFs, not just webpages. So many highlight tools ignore that, but textbooks and research papers are exactly where I get stuck and need context the most.
As someone who lives in research papers and medical textbooks all day, that copy → open ChatGPT → paste → lose-my-place loop is painfully familiar, so this clicks immediately. Two things I'm curious about: when I highlight a passage in a dense PDF, does Kogvio pull in the surrounding context (or the whole document), or only the exact selection? And for the technical-diagram case like the Kalman filter example in your demo, is it reading the figure itself or the caption and text around it? That's usually where in-page tools fall short for me.
Congrats on the launch. One question tough, does this integrate with any note taking apps or can you save the explanations you got in some way? I think saving this for later review would be really useful for studying.
About Kogvio on Product Hunt
“Understand anything online without leaving the page.”
Kogvio launched on Product Hunt on July 20th, 2026 and earned 135 upvotes and 39 comments, placing #11 on the daily leaderboard. Every time I didn't understand something online, I had the same workflow: Copy. Open ChatGPT. Paste. Come back. It completely broke my focus. So I built Kogvio. Highlight anything on a webpage or PDF, ask questions instantly in context, and continue learning without leaving the page. Whether it's documentation, research papers, medical textbooks, or technical diagrams, Kogvio helps you understand—not just search.
Kogvio was featured in Browser Extensions (5.4k followers), Developer Tools (516.1k followers) and Artificial Intelligence (474.1k followers) on Product Hunt. Together, these topics include over 187k products, making this a competitive space to launch in.
Who hunted Kogvio?
Kogvio was hunted by Harshit Kataria. 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.
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