Bulk Image Resizer
Batch resize multiple images by percentage, max width, or custom dimensions with ZIP download.
Select Images to Resize
Upload multiple images to resize in bulk with aspect-ratio preservation.
JPG, PNG, WebP • Max 20 MB per file
Queue is empty
Add multiple images using the upload area on the left to batch resize your files.
Privacy: Your images are processed locally in your browser. OfficeKit does not upload or store the images you select in this tool.
Review Notice: Inspect resized image dimensions, aspect ratios, and archive contents before production use.
Batch Resizing Configurations & Workflows
Standardize image libraries, product catalog photos, or article assets across varied source aspect ratios.
Multi-Mode Sizing
Scale uniformly by percentage (25% to 200%), clamp by maximum bounding box, or specify exact pixel targets with or without aspect ratio preservation.
Batch Concurrency Control
Sequential chunk processing ensures stability when resizing dozens of photos simultaneously. Memory is released immediately after each file is encoded.
ZIP Export & Filename Safety
All resized outputs can be downloaded individually or as a single combined ZIP archive. Any duplicate names are automatically suffixed to prevent overwriting.