Say2PDF turns any book into a PDF just by saying "Yes" as you turn the page. No shutter button, no waiting for auto-capture. Most scanning apps make you press a button or wait for automatic detection. Say2PDF captures the moment you say "Yes," so scanning happens at your own pace, hands-free. Each spread is auto-split into left/right pages and compiled into one PDF. Works with Google Drive, Dropbox, and your own server. Free 5-day trial, no card required.
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Maker
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Hey Product Hunt 👋
I'm Naoya, a solo maker based in Tokyo. I built Say2PDF after getting frustrated with existing scanning apps — they were feature-rich, but never captured on my own timing. Scanning a single book ended up taking me over 30 minutes.
So I built something simpler: just say "Yes" as you turn the page, and it captures instantly. No AI-powered auto-detection, no waiting — just a shift in how the interaction works.
This is actually the first product I've ever built together with AI, through countless back-and-forth conversations. It's also the first product from my company, Spark Industries — our mission is connecting centuries of human knowledge, still trapped in paper, with tomorrow's AI.
Would love to hear what you think, and happy to answer any questions! 🙏
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Would love to see a "review page" mode where you can swipe back to a page you missed, say "redo," and it re-captures just that spread without messing up the rest. That would save me from starting over when I sneeze mid-chapter.
Love this idea. Right now if you miss a spread mid-book, you have to restart the whole capture session — which is exactly the wrong experience for the “sneezed mid-chapter” case you’re describing. A targeted “redo this page” mode that doesn’t disturb the rest of the capture is a great, focused fix.
Adding it to my list. I’m building this solo (day job + Say2PDF on the side), so it’ll take a bit, but this is the kind of specific feedback that actually shapes what gets built next. Thank you for writing it out so clearly!
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One thing that would make this even better is a small visual or haptic cue confirming the page was actually captured, since audio detection can occasionally miss a beat or grab a blurry shot. A quick flash or vibration when "Yes" registers would give peace of mind mid-scan, especially for longer books where you might lose track of which spreads have already been saved.
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Maker
Good news — this one’s already in there. When a page is captured, the screen flashes and you’ll see a “Captured” message confirm it registered. If you’ve been using it and didn’t notice that, I’d love to know — might mean it’s not obvious enough, and that’s worth fixing too.
The haptic vibration part isn’t in yet though, and that’s a nice addition on top of the visual flash, especially for longer books where you might not always be looking at the screen. Adding that to the list. Thanks for the detailed feedback!
Would love to see a "review page" mode where you can swipe back to a page you missed, say "redo," and it re-captures just that spread without messing up the rest. That would save me from starting over when I sneeze mid-chapter.
@aylingullu82005
Love this idea. Right now if you miss a spread mid-book, you have to restart the whole capture session — which is exactly the wrong experience for the “sneezed mid-chapter” case you’re describing. A targeted “redo this page” mode that doesn’t disturb the rest of the capture is a great, focused fix.
Adding it to my list. I’m building this solo (day job + Say2PDF on the side), so it’ll take a bit, but this is the kind of specific feedback that actually shapes what gets built next. Thank you for writing it out so clearly!
One thing that would make this even better is a small visual or haptic cue confirming the page was actually captured, since audio detection can occasionally miss a beat or grab a blurry shot. A quick flash or vibration when "Yes" registers would give peace of mind mid-scan, especially for longer books where you might lose track of which spreads have already been saved.
Good news — this one’s already in there. When a page is captured, the screen flashes and you’ll see a “Captured” message confirm it registered. If you’ve been using it and didn’t notice that, I’d love to know — might mean it’s not obvious enough, and that’s worth fixing too.
The haptic vibration part isn’t in yet though, and that’s a nice addition on top of the visual flash, especially for longer books where you might not always be looking at the screen. Adding that to the list. Thanks for the detailed feedback!