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SynthGuard.net
Make AI images, text & video undetectable — 100% in-browser
SynthGuard is a privacy-first humanizer for AI-generated images, videos, and text — running 100% in your browser. No uploads, no servers touching your media. A 10-layer pipeline rewrites digital fingerprints (PRNU, FFT, sensor noise, real EXIF, chroma subsampling, JPEG double-compression) in under 5 seconds. Includes a free AI detector with 8 forensic signals so you can verify before you publish. Built for creators and OFM operators who ship daily and can't afford their content leaking.
Hey everyone 👋
I built SynthGuard after watching creator friends get their accounts flagged or shadowbanned because AI detectors on Instagram, TikTok, OnlyFans and Fanvue kept catching their generated content — even when it was harmless promo material.
Every existing "humanizer" had the same problem: you upload your stuff to their server, hope they don't store it, and pray it actually fools modern detectors. For NSFW creators and OFM agencies, that's a non-starter.
So I went the opposite direction: everything runs locally in the browser. No upload, no backend processing, no logs of your media. The pipeline is 10 layers deep — PRNU sensor fingerprints, FFT disruption, real camera EXIF injection, chroma subsampling, double JPEG compression, and a few more passes that target the exact signals classifiers look for.
The biggest evolution during the build: I originally focused only on images. But after talking to early users I realized the real pain is multi-format consistency — you generate an image with Midjourney, a caption with GPT, maybe a short clip with Sora, and all three need to pass detection. So I added a text humanizer and a video humanizer with the same privacy model.
I also shipped a free AI image detector using 8 forensic signals (noise correlation, FFT energy, EXIF physics, block artifacts…) so you can verify your output with the same kind of math the platforms use — before you post.
Free plan gives you 3 credits/week to try everything. Would love feedback on the detector accuracy and what platforms you're fighting most right now 🙏
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About SynthGuard.net on Product Hunt
“Make AI images, text & video undetectable — 100% in-browser”
SynthGuard.net was submitted on Product Hunt and earned 0 upvotes and 1 comments, placing #10 on the daily leaderboard. SynthGuard is a privacy-first humanizer for AI-generated images, videos, and text — running 100% in your browser. No uploads, no servers touching your media. A 10-layer pipeline rewrites digital fingerprints (PRNU, FFT, sensor noise, real EXIF, chroma subsampling, JPEG double-compression) in under 5 seconds. Includes a free AI detector with 8 forensic signals so you can verify before you publish. Built for creators and OFM operators who ship daily and can't afford their content leaking.
SynthGuard.net was featured in Privacy (11.1k followers), Artificial Intelligence (468.5k followers) and Tech (623.5k followers) on Product Hunt. Together, these topics include over 262.4k products, making this a competitive space to launch in.
Who hunted SynthGuard.net?
SynthGuard.net was hunted by Tim Geithner. 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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Tim Geithner