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ShadowSeal
Protect your digital assets with invisible watermark
•Add hidden copyright information without affecting file(image/pdf) quality or appearance. •All operations happen on your device. Your files never leave your device. •No subscriptions. No ads. Pay once and use forever. • Available on iPhone, iPad, and Mac. Your purchase works across supported devices. • Advanced algorithms provide resistance against common image modifications and help preserve watermark information. • Easily add invisible watermarks or verify ownership by embedded information.
Top comment
Nowadays, countless independent content creators are active across the internet, and I am one of them. We consistently produce original and high-quality digital content. However, individual creators have long faced prominent challenges in intellectual property protection. Most mainstream copyright protection tools on the market suffer from high costs, complicated operations and poor privacy performance, making original works vulnerable to unauthorized theft and reprinting, and leaving creators’ legitimate rights and interests inadequately protected. Targeting the genuine needs of individual content creators, I independently developed this invisible watermark adding and verification tool. Featuring imperceptible copyright protection, this tool can deeply embed exclusive copyright identifiers and creator information into the underlying layer of digital content without damaging the original content quality or undermining the user experience. It enables invisible traceability and copyright certification, building a solid defense for original works. Furthermore, tailored for individual creators, the tool delivers a secure, low-cost and hassle-free user experience. All content processing, watermark embedding and copyright verification run entirely locally with no cloud data uploads, completely eliminating the risk of material leakage. It adopts a simple and transparent one-time payment model for permanent access, with no advertisements, no recurring subscriptions, and no hidden charges, serving as a lightweight and user-friendly copyright protection solution exclusively for independent content creators. It is my sincere hope that this simple, secure and efficient tool can provide every original creator with an affordable and reliable intellectual property protection solution, safeguarding every original creation and letting every creative effort be duly respected.
About ShadowSeal on Product Hunt
“Protect your digital assets with invisible watermark”
ShadowSeal was submitted on Product Hunt and earned 0 upvotes and 1 comments, placing #62 on the daily leaderboard. •Add hidden copyright information without affecting file(image/pdf) quality or appearance. •All operations happen on your device. Your files never leave your device. •No subscriptions. No ads. Pay once and use forever. • Available on iPhone, iPad, and Mac. Your purchase works across supported devices. • Advanced algorithms provide resistance against common image modifications and help preserve watermark information. • Easily add invisible watermarks or verify ownership by embedded information.
On the analytics side, ShadowSeal competes within Legal, Apple and Business — topics that collectively have 30k followers on Product Hunt. The dashboard above tracks how ShadowSeal performed against the three products that launched closest to it on the same day.
Who hunted ShadowSeal?
ShadowSeal was hunted by 赵晨. 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 ShadowSeal including community comment highlights and product details, visit the product overview.