PrivateMark
Catch the leaker. And hide photos in plain sight.
PrivateMark launched on August 11, 2026 with 14 votes, #845 of 23,274 launches that month and more than 90% of that year's launches.
What it does
PrivateMark does two things, on-device, no servers, no accounts. 1) Trace any leak. Before you share a photo, PDF, Word or PowerPoint, it weaves in an invisible, per-recipient watermark. If a copy leaks, feed it back and it names whose copy it was. 2) Hidden Photo. Send a picture everyone sees as an innocent cover; your trusted contact opens it in PrivateMark to reveal the real photo, sealed with AES-256.
Welcome, Product Hunt. PrivateMark hides an invisible, per-recipient watermark in every photo and document you share, so a leak names one person, plus send a real photo disguised as an innocent cover. On-device, no accounts. Product Hunt offer: 1 month of Pro free with code PRODUCTHUNT.
You send one private photo to someone you trust. Weeks later it turns up in a WhatsApp group you were never in. Save that copy, drop it into PrivateMark, and it names exactly who you sent it to, from an invisible, per-recipient watermark woven into their copy alone. All on-device . No servers, no accounts. Plus Hidden Photo : send a real picture disguised as an innocent cover only your trusted contact can open. It lives in the pixels, not metadata a screenshot would strip. Tested against the messy realfrom privatemark.app
Does a similar job
all alternatives →
More work this month
the category →
Endless lofi beats composed live in your browser, over pixel-art nights in Paris, Tokyo, New York, Hong Kong, Sydney, San Francisco and more. Free, no sign-up.
Work · 25d ago · loficities.com
Smooth Recorder▲257Mac screen recordings that look edited when you hit stop
Work · 19d ago · smoothrecorder.com
Work · 13d ago · readrare.com
Source: Product Hunt launch ↗
Launched alongside, August 2026
the whole month →- TL
Life & fun · Aug 2026 · louisabraham.github.io
Clipto MCP▲655Hey HN, We recently built Clipto. It’s a tool that lets you search over terabytes of video, audio, and images on your computer, without relying on the cloud. Motivation: we probably all had this similar experience, we know a moment exists in a video or audio, but finding it takes hours scrubbing the timeline. You can send all the media to process in the cloud, but it’s slow, expensive and raises privacy concerns. So we decided to build our own on-device media search engine. How it works (high level): 1. We ingest video, audio, image; normalize formats via ffmpeg; run content analysis to…
Work · Aug 2026 · clipto.com
Hello HN! I found that picking out plausible but diverse skin tones for my digital art and game development projects was kind of difficult, and I got curious about if there was a way to define a color space that made it easy. I've built a color picker and procedural generation algorithm based on the space as well as a bunch of other fun js features and demos throughout the page that use the equations. If you find it interesting, I have lots of explanations of how I built it and what properties the space has. The methodology might be a bit shaky, but hopefully the result is as helpful for…
Life & fun · Aug 2026 · toneyalexander.github.io
Astute▲606Automate your B2B brand going viral, with new media creators
AI · Aug 2026 · company-app.joinastute.com