Batch Image Resizer Online — Resize Multiple Images
Resize up to 30 images online to a maximum width and download the results in one ZIP, entirely in your browser.
Images are processed locally in your browser and are not uploaded.
About this tool
This batch image resizer reduces multiple supported images to one maximum pixel width while preserving each aspect ratio. It keeps smaller images at their original dimensions and packages results in a ZIP.
How to use
- Choose up to 30 images with a combined size of no more than 100 MB.
- Enter the maximum output width in pixels.
- Process locally and download the ZIP archive.
Features
- Resizes multiple images in one run.
- Preserves aspect ratio and does not enlarge smaller files.
- Packages results into one local ZIP.
Common use cases
- Prepare a product-image collection for the web.
- Reduce a photo batch for email or upload.
- Standardize maximum width across article images.
Common issues and tips
- The browser must hold all decoded images in memory.
- Output format follows each source and dimensions never exceed the original width.
Privacy
Batch resizing runs locally in your browser. Selected images are not uploaded to Tools12345.
Frequently asked questions
How many images can I resize?
Up to 30 files with a combined selected size of 100 MB.
Will small images be enlarged?
No. The target width is capped at each original image width.
How are results downloaded?
All processed images are placed in one ZIP archive.