Sealixa
Client-side image watermarking tool for fast, private processing directly in the browser
Sealixa is a fully client-side watermarking application: no server, no upload, and no third party ever sees your files. You import images, configure a text or image watermark, preview the result in real time, and export everything locally. The project focuses on privacy, responsiveness, and a smooth batch workflow, including folder import and folder-structure preservation during export in supported browsers.
Skills
Skills used
Skills improved
Features
Text watermark support with customizable size, color, opacity, rotation and position
French and English interface with automatic language selection from browser preferences
Image watermark support for logos or custom overlay images
100% local processing in the browser with no file upload
Single placement mode for positioning a watermark at a specific location
Text watermark support with customizable size, color, opacity, rotation and position
Tiled placement mode to repeat the watermark across the entire image
Image watermark support for logos or custom overlay images
Real-time preview updated while adjusting watermark settings
Single placement mode for positioning a watermark at a specific location
Single-image export
Tiled placement mode to repeat the watermark across the entire image
Batch export for all imported images
Real-time preview updated while adjusting watermark settings
Folder import via drag and drop with image processing in bulk
Single-image export
Folder-structure preservation during export in Chrome and Edge
Batch export for all imported images
Firefox support for single-file export and flat batch export
Folder import via drag and drop with image processing in bulk
French and English interface with automatic language selection from browser preferences
Folder-structure preservation during export in Chrome and Edge
100% local processing in the browser with no file upload
Firefox support for single-file export and flat batch export
100% local processing in the browser with no file upload
Text watermark support with customizable size, color, opacity, rotation and position
Image watermark support for logos or custom overlay images
Single placement mode for positioning a watermark at a specific location
Tiled placement mode to repeat the watermark across the entire image
Real-time preview updated while adjusting watermark settings
Single-image export
Batch export for all imported images
Folder import via drag and drop with image processing in bulk
Folder-structure preservation during export in Chrome and Edge
Firefox support for single-file export and flat batch export
French and English interface with automatic language selection from browser preferences
Gallery
Gallery
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