Bulk Image Resizer
Resize a batch of images to a max box and download them all as a ZIP.
See how it works
Watch a quick simulation of this tool in action — no file needed.
How to use Bulk Image Resizer
Follow these steps — everything happens instantly in your browser.
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Step 1. Drop multiple images onto the zone — PNG, JPG, WebP, GIF and BMP are supported.
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Step 2. Set a maximum width and height in pixels — each image scales to fit, never stretched.
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Step 3. Pick an output format (JPEG / WebP / PNG) and quality, optionally toggle aspect-ratio lock.
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Step 4. Click Resize — every image is processed locally with the Canvas API and bundled into a ZIP via JSZip.
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Step 5. Unzip the result to access all resized images, named with their new dimensions.
Why use this tool
Private by design
All processing happens locally in your browser. Open DevTools → Network and you'll see zero file uploads. Ever.
Instant
No upload wait, no queue, no server round-trip. Results appear the moment you drop a file.
Free & unlimited
No accounts, no watermarks, no daily caps. Use it as many times as you like, forever.
Works everywhere
Desktop, tablet or phone — every tool is responsive and installable as a PWA for offline use.
Frequently asked questions
Everything you might want to know about bulk image resizer.
Image Resizer
Resize images to exact pixel dimensions with optional aspect-ratio lock.
Image Compressor
Shrink JPG, PNG & WebP files with a quality slider — private & instant.
Image Converter
Convert images between PNG, JPEG and WebP — no upload, no watermark.
Favicon Generator
Turn one image into a complete favicon pack (16–512px) as a .zip.