Aspect-aware sizing
Lock the first image ratio and update width or height while BatchTool calculates the other value.
Free Batch Image Resizer - Resize Images Online with No Uploads
Generate consistent dimensions for product grids, social crops, blog assets, and ad creatives. Runs entirely in your browser with no uploads.
Why choose BatchTool Image Resizer?
Fit method control
Use Stretch for exact scaling or Contain crop for consistent target frames.
Local batch output
Resize image sets in the browser, preview results, and export finished files as a ZIP.
Create consistent image dimensions for publishing.
Batch resizing helps normalize hero images, product grids, marketplace photos, Open Graph assets, social creative, and documentation screenshots before they enter your content workflow.
Best use cases for Image Resizer
Marketplace product images
Normalize catalog photos to square or fixed-size requirements before uploading them to a storefront.
Social media publishing
Create consistent portrait, landscape, and story dimensions for recurring social campaigns.
Website performance
Resize oversized images before compression so pages avoid shipping unnecessary pixels.
Frequently asked questions
Can I resize multiple images at once?
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Yes. Add multiple images, set the target width and height, then run the local resize queue and download individual files or a ZIP archive.
How does locked aspect ratio work?
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When aspect ratio locking is enabled, BatchTool reads the first queued image and calculates the matching width or height as you edit the other dimension.
What is the difference between Stretch and Contain crop?
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Stretch scales images to the exact target dimensions. Contain crop crops to the target frame before resizing, which is useful for consistent social, catalog, or ad creative dimensions.