01
Drop your images
Add as many JPG, PNG, WebP, AVIF or HEIC files as you like. Everything runs locally — nothing is uploaded.
Batch processed in your browser — no uploads
Bulk Resize Images
Resize a whole folder of photos at once — by width, height, percentage or exact size. Convert the format too, then download everything as a zip.
Resizing images one at a time is tedious. Resizor's bulk image resizer lets you drop in a whole batch and resize them all with the same settings in a single click — perfect for product catalogs, photo galleries, email attachments and website assets.
It runs entirely in your browser with wasm-vips, so even hundreds of images never leave your device. Resize by width, height, longest side, percentage or exact dimensions, optionally convert to JPEG, PNG, WebP or AVIF, then grab the results individually or as a single zip. Free, private and watermark-free.
// Three steps
How it works
02
Choose a size
Resize by width, height, longest side, percentage, or to exact dimensions. Pick an output format and quality.
03
Resize & download
Resize the whole batch in one click, then download files individually or all together as a .zip.
// Good to know
Frequently asked questions
Q1How many images can I resize at once?
As many as your device can handle — they're processed one at a time in your browser so memory stays under control. There's no per-file or daily limit.
Q2Are my images uploaded to a server?
No. Every image is decoded and resized locally with wasm-vips (WebAssembly). Nothing leaves your browser, and there's no watermark.
Q3Will resizing keep the aspect ratio?
Yes — width, height, longest-side and percentage modes all preserve the aspect ratio. Use 'Exact' with the Cover/Contain/Stretch fit if you need specific dimensions.
Q4Can I keep each file's original format?
Yes. Leave the format on 'Original' to export each image in its source format, or pick JPEG, PNG, WebP or AVIF to convert the whole batch at once.
Q5How do I download everything?
Download files one by one, or click 'Download all (.zip)' to get the entire resized batch in a single zip archive.
Resize hundreds of images in seconds
Batch resize and convert locally, then download the whole set as a zip — no upload, no watermark.