How to use Bulk Image Resizer
- Choose the source image from your device.
- Review the available settings or analysis results.
- Download a result only when the measured output meets your needs.
Free Bulk Image Resizer
Bulk resize photos and multiple images with proportional batch controls, local processing, and no upload.
Choose or drop a source imageJPG, PNG, WEBPChoose from your device or drag and drop files here.Paste a supported image with Ctrl+V / Cmd+V.
Bulk Image Resizer is designed around one clear task and keeps the working file on your device. Controls and limitations are shown before you process.
How OpenFileTools processes it
Local processing, explicit choices.
The browser reads and processes the selected file locally. OpenFileTools does not receive the image, metadata, or processing settings.
Quick technical summary
What this tool changes.
| Property | Behavior |
|---|---|
| Processing | Browser only; no image upload |
| Original | Never changed |
| Resize modes | Width, height, longest side, percentage, exact box |
| Batch output | Individual files or ZIP |
| Proportions | Preserved except deliberate crop-to-fill |
Resize multiple images with one repeatable rule
Use this bulk image resizer when a whole batch needs the same width, height, longest side, percentage scale, or exact target box. Longest-side and percentage modes adapt to portrait and landscape sources without stretching them.
- Example: 4,000 × 2,500 at 1,600 px longest side becomes 1,600 × 1,000.
- Fit keeps the full image inside a target box.
- Fill/crop preserves proportions while removing edge overflow.
Choose whether small images can be enlarged
Enlargement is explicit because a batch can contain sources of very different sizes. Turn it off when smaller originals should remain unchanged rather than being scaled up to the common target.
- Enlargement cannot recreate detail that is absent from the source.
- Percentage mode scales every image from its own original dimensions.
- A shared longest-side rule does not force every image to the same aspect ratio.
Review the batch before downloading the ZIP
The tool reports each source and result independently, so one unusual file does not have to hide inside the batch. Download individual outputs or create a ZIP after multiple results are ready.
- Use the same rule for a product catalog or web asset set.
- Check filenames and output dimensions before distributing the ZIP.
- Keep originals until the batch has been reviewed.
Questions, answered.
Can I resize multiple images at once?
Yes. Add the batch, choose one resize rule, process the files locally, and download results individually or together as a ZIP.
Can portrait and landscape files be resized together?
Yes. Longest-side and percentage modes adapt proportionally to each image.
What is the difference between fit and crop?
Fit keeps the whole image; crop fills the requested box and may remove edge content.
Can I stop small images from being enlarged?
Yes. Turn off Allow enlargement when smaller source images should remain at their original dimensions.