Using desktop software provides privacy, eliminates file size limits, and allows offline processing. Here are the top free tools available for download: 1. XnConvert (Windows, Mac, Linux)
Offers granular control over output file naming and directory structures.
Requires the installation of the free IrfanView All Plugins pack to enable WebP capabilities. 3. Digikam (Windows, Mac, Linux)
Completely free without ads, tracking, or premium paywalls.