Batch Image Resizer & Converter

Resize and convert many images at once — drop a batch (or pick files), choose a resize mode (percentage, max width, max height, or exact dimensions), pick the output format (PNG, JPEG, or WebP) and quality, and download each result. Aspect ratio is preserved unless you choose exact dimensions. Each image is decoded and resampled on an in-memory canvas — nothing is uploaded. Great for preparing thumbnails, web assets, or normalizing a folder of photos.