Bulk Image Resizer
Resize multiple images at once to specific dimensions or percentages.
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About Bulk Image Resizer
Save time by resizing dozens of images simultaneously. Our bulk image resizer allows you to scale images by exact dimensions or specific percentages, maintaining crystal-clear quality without any server uploads.
How to Use
- Drag and drop multiple image files into the upload area.
- Choose between 'Percentage' scaling or setting specific 'Target Dimensions'.
- Toggle 'Lock Aspect Ratio' to prevent stretching or distortion.
- Click 'Resize All Images' and download the processed files as a convenient ZIP archive.
Common Use Cases
- Batch processing product photos for e-commerce websites and catalogs.
- Optimizing large folders of images for faster email sharing or cloud storage.
- Standardizing photo sizes for blog galleries and social media profiles.
Technical Details
Leverages the browser's native resizing algorithms with optional bicubic interpolation for high-quality downscaling. Processes multiple files in parallel using Web Workers.
Frequently Asked Questions
- Is there a limit on the number of images?
- There is no hard limit, but your browser's memory is the main factor. We recommend batches of 20-50 for the best performance.
- Does it support PNG transparency?
- Yes, transparent backgrounds in PNG and WebP files are fully preserved during the resizing process.
100% Private & Secure
This tool runs entirely in your browser using client-side technology. Your files and data are never sent to a server, ensuring 100% privacy and speed.