WebP Dropper by Webp Converter

WebP Dropper converts images to WebP without leaving Firefox.
Three ways to use it:
• Sidebar — drag and drop files from your computer, convert them in batches.
• Toolbar popup — the same panel in one click.
• Right-click any image on a page → “Save as WebP”.
Features
• Batch conversion with per-file size stats and total savings
• Quality slider (60–100 %); 100 % is visually indistinguishable from the original
• Optional downscaling by max side, useful for oversized photos
• Transparency (PNG alpha) is preserved, EXIF orientation is applied to pixels
• Automatic download or manual save per file
• English and Russian interface