The selected pixels are decoded into an HTML canvas, transformed at source resolution, and encoded into the chosen output format. Batch mode applies one bounded resize and quality policy to every selected file.
Solid-color background removal compares pixel color distance and is not semantic subject segmentation. Complex backgrounds, fine hair, transparency, metadata, and print workflows should be checked in a dedicated image editor.
Questions
Batch Image Compressor FAQ
Are images stretched to the maximum size?
No. Each image keeps its aspect ratio and is only reduced when it exceeds the selected maximum width or height.
Why can PNG output be larger?
PNG is lossless and is often larger for photographs. WebP or JPG generally produces smaller photo files at a controlled quality setting.
