Resize Many Images at Once
Resize many images at once
What is Bulk Image Resizer?
Resize a batch of images at once with a shared max-dimension and optional format change (JPG, PNG, WEBP, or match-source). Preserves aspect ratio, uses high-quality hermite filtering, and downloads the result as a zip. Great for preparing a folder of photos for web publication, shrinking a whole camera roll for email, or standardising thumbnails in one go.
How do I use Bulk Image Resizer?
- Drop multiple images onto the upload zone.
- Set the max long side and output format.
- Adjust quality for JPG/WebP outputs.
- Click "Resize & download .zip".
When should I use Bulk Image Resizer?
Bulk Resize handles many files at once. For a single image with precise control (exact pixel dimensions, aspect lock), use Image Resizer. To rename files without changing pixels, use File Renamer.
Frequently asked questions
How many images can I resize at once?
Hundreds; the tool streams images one at a time so memory use stays bounded. The practical limit is browser RAM and patience.
Can I apply different settings per image?
No; one target (width / height / format / quality) applied to every file. For per-image adjustments, use the single-image Image Resizer.
How do I download the results?
A single ZIP containing every resized image, preserving original filenames (with optional suffix, e.g. name-resized.jpg).
Is my file uploaded anywhere?
No. Everything runs in your browser. Your files never leave your device, and there is no server component for this tool.
Tools that pair well with Bulk Image Resizer
- Image Resizer resize to exact pixels or %, free and in your browser.
- Image Compressor shrink file size, keep quality, free and in your browser.
- Bulk File Renamer bulk rename with patterns, free and in your browser.
- Image Converter png ↔ jpg ↔ webp, free and in your browser.