Demo
A direct walkthrough of the verification flow.
This page shows the review flow: inspect media, run detection, and read UID, confidence, and evidence output.
For implementation detail, request a technical walkthrough with your own media.
See it. Verify it.
Compare original vs watermarked media across image, video, and audio.
- - Compare original and watermarked image samples.
- - The watermark stays invisible; evidence appears in decode output.
- - Built for fast operator review.


Text, docs, and code watermarking
DeadMark is expanding beyond image/video/audio with one API and format-aware profiles for text workflows. The target is practical survivability through copy/paste, spacing changes, and light reformatting.
export function scoreRisk(input: string): number {
const normalized = normalizeText(input);
const entropy = estimateEntropy(normalized);
return Math.min(100, Math.round(entropy * 37));
}Survival test results
Snapshot of demo survivability metrics across common transforms and platform-style delivery paths.
Attack resistance
| Attack | Survival | Health After |
| JPEG Q70 | ✅ | 82.1% |
| JPEG Q50 | ✅ | 71.3% |
| Resize 75% | ✅ | 78.9% |
| Resize 50% | ✅ | 65.2% |
| Crop 10% | ✅ | 89.4% |
| Gaussian Noise | ✅ | 76.8% |
| Gaussian Blur | ✅ | 84.2% |
| MP3 128kbps | ✅ | 68.5% |
| AAC 128kbps | ✅ | 72.1% |
| H.264 CRF23 | ✅ | 75.3% |
| Combined | ✅ | 58.1% |
Platform survivability
| Platform | Image | Audio | Video |
| TikTok | 89% | 76% | 72% |
| 91% | N/A | 68% | |
| YouTube | 94% | 85% | 81% |
| Spotify | N/A | 88% | N/A |
| Twitter/X | 87% | 74% | 69% |
These figures are based on controlled simulation runs across 1,000+ media samples designed to approximate real-world transformations. Field performance can vary depending on content characteristics, platform processing changes, and downstream recompression.