Bulk Image Resizer — Resize Multiple Images Free
Resize hundreds of images instantly with smart interpolation. 100% private.
Drag your images here
Supports JPG, PNG, WebP · Max 50 files per batch
💡 Fit mode active: Aspect ratio is locked. Images will scale proportionally to fit inside these bounds.
Frequently Asked Questions
Is there a file limit?
Will resizing reduce quality?
What happens to my data?
Resizing a Whole Folder, Consistently
Batch settings that work
Batch resizing is about choosing one rule that fits every image in the set. Settings that hold up in practice:
| Batch job | Setting | Why |
|---|---|---|
| Marketplace product photos | Longest side 1000–1500 px, JPG 85% | Sharp zoom, fast load |
| Website gallery | Longest side 1600 px, WebP | Retina-ready without 4 MB files |
| Email attachments | Longest side 1024 px, JPG 80% | Whole batch fits under limits |
| Document/receipt photos | Width 1240 px, JPG 85% | Readable text, small files |
| Archive/backup copies | 50% of original | Halves storage, keeps usable quality |
One rule, mixed shapes
A batch always mixes portrait and landscape, so resize by the longest side rather than forcing fixed width × height — fixed dimensions either distort images or crop them unpredictably. Aspect ratios stay intact, and every image fits inside the same bounding box. If the set genuinely needs identical shapes (a uniform grid of thumbnails), crop each to one aspect ratio with the cropper first, then batch-resize.
Batches and your bandwidth
Processing happens in your browser, which has a real advantage at batch scale: a hundred photos don't upload to a server and crawl back down — they process at your CPU's speed, and nothing leaves your machine. For a single image needing exact pixel dimensions, the single-image resizer gives finer control; to shrink file sizes without changing dimensions, use the compressor.