Resize images in bulk — free, without uploading them
Whether it's photos too big to email or images for a website that load too slowly, the fix is the same: resize the whole folder in one pass. Here's how to do it free — no upload, no watermark, right in your browser.
How to resize images here (free)
- Open the free batch image resizer.
- Drop in your images — JPEG, PNG, WebP, anything your browser can open.
- Choose fit to max width/height (keeps aspect ratio) or a percentage scale, and set the quality slider (85% is the sweet spot). "Prevent upscale" keeps small images from being pointlessly enlarged.
- Download the results as a zip.
Pick the right size for the job
| Use case | Good max size | Why |
|---|
| Email attachment | 1200–1600 px | Stays under attachment limits, still looks great on any screen |
| Marketplace listings | 1600 px | Meets most platforms' minimum zoom, small upload |
| Website content images | 1600–1920 px | Sharp on laptops and phones without wasted megabytes |
| Website hero / full-width | 1920–2560 px | Big screens still crisp |
| Print | Don't downscale | Printers need the pixels — resize a copy, keep the original |
Quality vs file size, in one paragraph
Resizing shrinks the pixel dimensions; the quality slider controls how hard the JPEG encoder squeezes what's left. 85% is visually indistinguishable from 100% for photos and typically a third of the size. Below ~70% you start seeing softness around text and edges. If in doubt: 85%, and let the pixel dimensions do the heavy lifting.
Resizing vs compressing
They're related but different. Resizing reduces the pixel dimensions — 4000×3000 becomes 1600×1200. Compressing keeps the dimensions and lowers quality. This tool does both at once (resize + quality slider), which is why a 4 MB phone photo becomes a 300 KB email-ready JPG.
42 photos → max 1600px, quality 85%
IMG_2041.jpg 4.2 MB → 380 KB
IMG_2042.jpg 3.9 MB → 356 KB
✓ resized.zip ready — never uploaded, 0 bytes sent
What a batch run looks like (illustration — demo files, never real data):
Like the tool? Own it.
The free page resizes 3 images a day. The €9 Batch Image Resizer download is the same tool as a single file: whole folders in, one zip out, no daily limit, offline forever. One-time payment — no subscription.
Get Batch Image Resizer — €9 once
Questions people ask
Do my images get uploaded anywhere?
No. The resizing runs entirely inside the page — no server, no account, no network calls. Works with your Wi-Fi off.
How many images can I resize at once?
The free page handles up to 3 images a day so you can try it properly. The €9 download batch-processes whole folders and gives you one zip — no limits.
Will resizing reduce quality?
Re-encoding always loses a little — that's why there's a quality slider (85% default is visually indistinguishable for most uses), and "Prevent upscale" stops small images being enlarged.
Which formats can it read and write?
Reads anything your browser can open — JPEG, PNG, WebP and more. Output is JPEG or PNG, your choice, with adjustable quality.
More step-by-step guides
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