Batch resize, optimize, and convert JPG, PNG, and WebP files — hundreds of images in seconds, 100% processed locally in your browser.
Install ExtensionBulk Image Resizer is a Chrome extension that resizes, optimizes, and converts multiple images at once — directly in your browser. Instead of uploading files to a website, it processes everything locally, supporting JPG, PNG, WebP, and more, so you can handle hundreds of images in seconds without your files ever leaving your device.
Process hundreds of images in seconds with our optimized browser-based engine. No uploads, no waiting. Because everything runs directly in your browser tab, there's no server queue or upload progress bar slowing you down.
Support for JPG, PNG, WebP, and more. Convert between formats while resizing for maximum compatibility. Resizing and converting happen in the same step, so you don't need a separate tool to change file types.
All processing happens locally in your browser. Your images never leave your device - complete privacy guaranteed. There's no upload step and no server-side copy of your files to worry about.
Pre-configured sizes for social media, web use, and common formats. Or create custom dimensions for your needs. Pick a preset for quick, consistent results, or switch to custom width and height when you need exact control.
Upload entire folders and process them all at once. Perfect for photographers, designers, and content creators. Instead of resizing one image at a time, select a whole batch and let the extension work through every file in one pass.
Maintain image quality while reducing file sizes. Advanced algorithms ensure your images look great at any size. That balance matters whether you're optimizing images for faster page loads or just saving storage space.
No. All processing happens locally in your browser, and your images never leave your device.
Bulk Image Resizer supports JPG, PNG, WebP, and more, and lets you convert between formats while resizing.
Yes. You can upload an entire folder and the extension processes every image in it as a single batch.
The actual resizing runs locally in your browser rather than on a remote server, so no file upload or server round-trip is needed to process your images.
Selling online or posting to social media? Read our guide: How to Bulk Resize Images for E-Commerce or Social Media
Have more questions? See the full FAQ page, or read why local, browser-based processing is different from typical upload-based resize tools.
Whether you're a professional designer or just need to resize family photos, Bulk Image Resizer makes it easy.