Bulk Image to WebP Converter
Batch convert multiple JPG, PNG, and WebP images to modern WebP format with ZIP download entirely in your browser.
Select Images
Select multiple JPG, PNG, or WebP files to convert into WebP in bulk.
JPG, PNG, WebP • Max 20 MB per file
Applied to pending conversions. PNG alpha transparency is preserved.
No images selected
Add JPG, PNG, or WebP images using the upload area on the left to start batch converting.
Privacy: Your images are processed locally in your browser. OfficeKit does not upload or store the images you select in this tool.
Review Notice: Verify converted files, quality, and archive contents before sharing or publishing.
Bulk WebP Conversion Specifications
Fast, client-side batch conversion optimized for photography assets, web catalogs, and performance-sensitive websites.
Controlled Concurrency
Images are converted with controlled concurrency (up to 2 parallel tasks) to keep memory usage low and prevent browser freeze even on large batches.
Browser ZIP Archiving
Bulk downloads are packaged into a standard ZIP archive compiled in-memory in your browser. Duplicate filenames are sanitized with sequential numbering.
Zero Cloud Uploads
All decoding, rendering, and WebP compression runs entirely locally via Canvas APIs. No file contents or telemetry ever leave your device.