Compress, convert and watermark images locally.

What it does

Batch-convert JPG, PNG, WebP and AVIF with libvips. Resize or add a text/image watermark without uploading a pixel.

How to use it

1. Choose images
2. Output settings
3. Process images
4. Download

Formats and limits

• JPG, PNG, WebP, AVIF, GIF, HEIC and TIFF input
• You can process up to 12 images at once.
• One or more images exceed the 60 MB limit.
• Keeps aspect ratio and never enlarges the source.

Privacy

Files stay on this device. The codec runs in a dedicated browser worker.