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🛡️ MistSeal

– A "Shield of Mist" for your precious images –

An image protection tool that easily adds a logo or QR code watermark to your precious images, or embeds a hidden logo to prevent misuse and unauthorized AI learning.

🛡️

【Safe, Secure, No Data Retention】
This app does not save any information and processing is completed entirely within your browser. There is absolutely no use of AI.

📱 You can add the app to your smartphone's home screen! Click here for instructions

🖼️ Preview (MistSeal)

* You can drag the preview screen to move the watermark logo

* The display is emphasized for confirmation, but the characters are actually hidden in this way.

0.5x
100%

⚙️ Settings Panel

🌟 Batch Processing Supported
* During batch processing, the "size" and "position" of the logo are automatically calculated as a relative ratio to the first image. However, to prevent misalignment in position and size, please select images with the same resolution and aspect ratio as much as possible.
* If you save multiple images at once on a smartphone, they will be downloaded as a "ZIP file" (which can be viewed in standard "Files" apps).

* Countless texts, so thin they are invisible to the naked eye, are tiled over the entire image.

3%
* The thinner it is, the less visible it is to the naked eye, but please note that if it is too thin, you may not be able to confirm the hidden logo if something happens.
💡 3% is recommended.
🔒

AI Learning Prevention is
Premium Only

🛡️ AI Learning Prevention Features

PREMIUM

* Even though it is not completely preventable, it serves as a certain deterrent through indicating a refusal to AI and employing technical noise disruption.

* EXIF is reflected only when saved in jpg or jpeg format
* Anti-AI invisible characters and grids synchronize with the thinness of the hidden logo