A blind watermark (also called an invisible watermark) is a watermark invisible to the naked eye: information is hidden in the pixels of an image or video, so the picture looks identical to the original, yet the embedded data can be recovered with a specialized algorithm. wmgg is a browser-based invisible watermarking tool (blind watermark).
A visible watermark (text or logo in a corner) is obvious, but easy to crop out or cover up, and it degrades the image. A blind watermark hides in the pixels — invisible to the eye, no visual impact, and it survives cropping, compression, and screenshots. Even if the image is modified, the watermark remains and can be extracted anytime to prove ownership.
Most watermark tools upload your images to a cloud server for processing, which risks leaking your files. wmgg's watermark engine runs locally in your browser — images and videos never leave your device. 100% local, 0% uploads.
No. wmgg's core watermark engine (C++ → WebAssembly) runs locally in your browser — your files are processed on your device and never leave it. Your files, your privacy.
No. That's what blind means — extraction doesn't require the original file for comparison. Just decode the image or video directly to recover the embedded information.
A blind watermark is embedded in the visual redundancy of images/videos, via subtle pixel adjustments. Routine editing (compression, resizing, color grading, format conversion) won't destroy it. However, deliberate high-intensity attacks (e.g. extreme compression to a tiny size) may weaken the signal.
Yes. wmgg's image watermark passed 52 of 53 attack tests (98.1%): screenshots, compression (JPEG Q=30 and up), rotation (3°–275°), cropping (60%/80%), and scaling all pass reliably — more than enough for everyday sharing.
wmgg's video watermark is designed for real-world distribution — it tolerates normal re-encoding, compression, and cropping. Extreme degradation (e.g. crushing to a tiny size) may weaken the signal.
Images: JPG, PNG, WebP and other common formats (output as JPG). Videos: MP4, MOV, MKV, WebM, TS (output as MP4).
Up to 16 bytes (about 16 ASCII characters) — enough for a short identifier, copyright notice, or tracking code.
No. The blind watermark hides in subtle pixel adjustments — imperceptible to the eye (PSNR > 40dB). The output looks identical to the original.
Depends on file size and count. A 1920×1080 image takes ~0.5–1s to embed and ~1–2s to extract; videos take longer depending on duration. Batch processing is supported.
Embed an invisible watermark before publishing. wmgg's blind watermark hides in the pixels — invisible to the eye, and it survives screenshots, compression, rotation, and format conversion. If someone steals your work, extract the watermark to prove ownership. Try it at wmgg.cc.
Photographers and designers (embed copyright claims in their work), content creators (tag AIGC or original images with a creator ID), e-commerce sellers (embed store IDs to deter theft), enterprises (trace internal document leaks), and individual users (protect work before posting on social media).
Yes. wmgg offers a Photoshop plugin (UXP panel — search "wmgg" in the Adobe marketplace), a Photopea plugin (Window → Plugins → search "wmgg"), a Canva plugin (search "wmgg" in the Canva app marketplace), and a Chrome extension (right-click any image to sign it) — watermark or extract without leaving your editor.
Yes. Free tier: 50 tokens on signup + 30 daily refills — enough for casual daily use. Pro ($4.99/month) and Max ($69.99/year) plans are also available. See Guide · Pricing.
No. Verification is always free — 0 tokens. Just drop the image or video to check, and the watermark is extracted locally.