Use Select Files to pick individual images or videos, or Select Folder to load an entire directory at once. Images (including iPhone HEIC photos) convert to WebP, videos convert to WebM — you can mix both in one batch. Audio is preserved.

Optionally add a prefix or suffix to filenames. Use the dropdown to keep original names, replace with numbers, or append a counter.

WebP % — 85% is a good default. If your batch includes video, a WebM Mbps slider appears too; 6 Mbps balances quality and size for most footage.

Hit Process Files. Video conversion speed depends on resolution and length, but is typically faster than playback time. Download individually or grab everything as a zip.