Bulk Image Resizer
Resize, convert and compress a whole batch of images at once — pick files or a folder, choose the size, fit, format and quality, then download them one by one or all together as a ZIP. Nothing is uploaded.
Drag and drop images or a folder here, or
Size & fit
Height follows each image's own aspect ratio — the field above is a preview for the first image.
Fit mode applies when the aspect ratio is unlocked — with the lock on, every image simply scales proportionally.
Output
WebP is usually 25–35% smaller than JPEG at the same quality.
Lower means smaller files.
Example: photo-resized.webp
About this tool
Every image is decoded in the browser, drawn onto a canvas at the size your settings produce, and encoded into the format you picked — so this resizes, converts and compresses in a single pass. With the aspect ratio locked, each image keeps its own proportions; unlocked, the fit mode decides whether the image is contained, centre-cropped or stretched into the box.
Batches are processed one image at a time with a yield between each, so the page keeps responding, and up to 60 files at 8000px on the long side are supported. ZIPs are stored rather than re-compressed, because image formats are already compressed. Nothing is uploaded.
- 100% free — no account needed
- Runs in your browser
- Nothing is uploaded
Frequently asked questions
Is Bulk Image Resizer really free?
Yes. Bulk Image Resizer is completely free on PureBrowser — every feature, with no account, no trial, and no credit card.
Does Bulk Image Resizer upload my data?
No. Bulk Image Resizer runs entirely inside your browser, so anything you type, paste, or open stays on your own device.
Do I need to sign up or install anything?
Neither. There is no account and nothing to download — open the page and Bulk Image Resizer is ready to use on desktop or mobile.
Does Bulk Image Resizer work offline?
Once the page has loaded, yes. All of the processing happens locally in your browser, so it keeps working without a connection.
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