Free Batch Image Processor — Resize & Convert Hundreds at Once
This free batch image processor handles entire folders in your browser: drag in hundreds of images, resize with aspect preservation, convert between PNG, JPEG, and WebP, add watermarks, control compression quality, and download everything as a zip. Processing happens on web worke…
Quick Answer
This free batch image processor handles entire folders in your browser: drag in hundreds of images, resize with aspect preservation, convert between PNG, JPEG, and WebP, add watermarks, control compression quality, and download everything as a zip. Processing happens on web workers — and nothing is ever uploaded.
How It Works
Drag a folder of images in — they load locally with thumbnails
Set the operations: resize, convert, watermark, quality
Run the batch — workers churn through files without freezing the page
Download the results as a single zip
Key Facts
- Hundreds of images in one pass
- Resize, convert (PNG/JPEG/WebP), compress
- Watermarks with position and opacity
- Zip download of the finished batch
- Zero upload — everything on your device
Frequently Asked Questions
How many images can it handle?
Hundreds comfortably — processing is parallelized on web workers. The practical limit is your device memory.
Are my photos uploaded?
No. Files are read locally and processed in your browser; nothing goes to any server.
Can it convert HEIC?
Yes for decoding when your browser supports it; convert HEICs to JPEG/PNG in the batch like any other format.