When Batch Conversion Matters
If you're launching a website, processing a photo shoot, or preparing images for a store, converting one at a time is impossibly slow. Batch conversion turns an hour of work into a minute.
Method 1: Browser Tool (Small Batches)
FreeMediaKit's Image Converter and Compressor let you upload multiple images and download them as a zip. Best for batches up to 20–30 images.
Method 2: IrfanView (Windows, Free)
IrfanView's batch conversion feature handles thousands of images. File → Batch Conversion/Rename → select input folder, output format, and settings. One of the fastest free tools available.
Method 3: ImageMagick (All Platforms, Free)
Command-line tool. Batch convert an entire folder to WebP:mogrify -format webp -quality 85 *.jpg
Method 4: XnConvert (GUI, Free)
Cross-platform GUI tool. Drag a folder in, set output format and compression, done. Supports 500+ input formats.
💡 Always work on a copy of your originals — batch operations overwrite files if you're not careful about output folders.