What is the Bulk Image Resizer?
If you need to resize many photos to the same file size — for a website gallery, an online listing, or a batch of ID photos — doing them one at a time is slow. This tool resizes up to 20 images to the same target KB range in one go, entirely in your browser, and packages every result into a single downloadable ZIP file.
How to Use This Tool
- Upload up to 20 photos (JPG, PNG or WEBP) by clicking or dragging them in.
- Choose a preset or set a custom Min/Max KB range — it applies to every photo.
- Click Resize All and watch each photo process in sequence.
- Click Download All (ZIP), or download individual photos from the list.
Guidelines
- All 20 photos share the same target size and dimensions — for per-photo control, use the single-image Resize to Exact KB tool.
- Very large photos (12MP+) take a little longer per image — the tab stays responsive throughout.
- The ZIP is built entirely in your browser; larger batches produce larger ZIP downloads.
Frequently Asked Questions
How many images can I resize at once?
Up to 20 images per batch. This limit keeps processing fast and reliable since everything runs in your browser, not on a server.
Do all images get the same target size?
Yes — pick one preset or a custom Min/Max KB range, and it applies to every image in the batch. For different targets per image, use the single-image Resize to Exact KB tool instead.
How do I download all the resized images?
After processing, click "Download All (ZIP)" to get every resized image in one .zip file, or download individual images one at a time.
Are my images uploaded to a server?
No. Every image is processed locally in your browser. Nothing is ever uploaded, and the ZIP file is also built entirely on your device.
Last updated: August 2026