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
Resize batches by dimensions, percentage, or maximum size without uploading them.
Choose images from your deviceYou can also paste an actual image with Ctrl+V / Cmd+V when this page is focused.
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 |
| Batch output | Individual files or ZIP |
| Proportions | Preserved except deliberate crop-to-fill |
Choose a batch rule that matches the job
Width and height mode fits or crops every image to a defined box. Percentage mode scales each source relative to itself. Maximum width, maximum height, and longest-side modes cap one proportional dimension across mixed orientations.
- Example: 4,000 × 2,500 at 1,600 px longest side becomes 1,600 × 1,000.
- Keep entire image preserves all content; crop to fill can remove edges.
Prevent accidental enlargement
Leave enlargement off when small originals should remain small. After processing, compare each measured result and download files individually or collect completed outputs in one ZIP.
- Percentage keeps the relationship between width and height.
- A batch rule does not guarantee identical aspect ratios.
Questions, answered.
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. Leave Allow enlargement unchecked.
How are multiple results downloaded?
Use individual links or create a ZIP after at least two outputs are ready.
Read before you export
Read the related guide