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How to Use the Batch Image Editor
Upload Images
Drag and drop or click **Add image files** / **Add folder** in the side panel to import all images you want to edit. All major formats supported.
Configure Dimensions & Output Format
In the **Output & Watermark Settings** section, specify target width/height (or leave blank to preserve original aspect ratio) and choose format (WebP, AVIF, JPG).
Overlay Logos / Watermarks
Choose from preset logos or upload your brand logo. Customize placement (top/bottom/center), scale ratio, opacity alpha, rotation angle, or enable **Repeat Pattern**.
Embed Metadata & Copyright (EXIF)
Input copyright ownership, author name, geolocation coordinates (GPS), and SEO tags in the **Batch Metadata** section to protect your digital assets.
Execute & Download
Click **Start Processing**. Multi-threaded WebAssembly Web Workers will process, watermark, and optimize your images in seconds directly on your device.
Key Features
Absolute Privacy (Zero Server Uploads)
All processing happens 100% client-side in your browser memory. Your private photos never leave your device.
High Performance WebAssembly (libvips)
Powered by compiled WebAssembly libvips with multi-threaded Web Workers to batch process hundreds of photos in seconds.
Advanced Logo & Pattern Overlays
Supports multiple simultaneous logos, drag-and-drop placement, rotation, opacity blending, and full-bleed watermark grid repeat.
EXIF & Image SEO Metadata Injection
Automatically writes EXIF/XMP copyright, photographer credit, geo coordinates, and keywords for optimal Google Image SEO.
Frequently Asked Questions (FAQ)
Is there any limit on the number of images I can process?
No limits at all. Because processing runs locally on your machine's CPU and RAM, you can batch edit hundreds or thousands of photos without server throttling.
Are my photos uploaded to any external server?
No. We guarantee 100% privacy. Images are processed locally in your browser RAM using WebAssembly; zero image bytes are transmitted across the internet.
Which output format should I select (WebP, AVIF, or JPG)?
AVIF offers maximum compression with superior quality. WebP provides the best balance of speed and universal browser support. JPG is best for legacy software compatibility.
Can I add multiple logos to the same photo?
Yes. Simply click 'Add Logo' in the configuration panel to add and position multiple watermarks with individual scales and opacity levels.