Online Image Resizer in KB – Resize & Compress Free

Resize multiple images by custom width, height, or percentage. Download optimized images in a ZIP package for free.

Free Bulk Image Resizer Tool

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Drag & drop images here, or click to browse

Why Choose Our Online Image Resizer?

Instantly resize, compress, and optimize photos for websites, social media, e-commerce listings, email campaigns, and more—no software install, no sign-up, 100 % free.

Lightning-Fast

Batch-process up to 50 images in seconds thanks to our highly optimized WebAssembly pipeline.

100 % Private

All transformations run locally in your browser. Nothing is uploaded, stored, or tracked—perfect for NDA-sensitive projects.

Bulk ZIP Download

Grab every resized file in a single, neatly named ZIP. Need smaller file sizes? Run them through our Image Compressor without leaving the page.

How to Resize Images Online in 3 Easy Steps

  1. Select files – Drag-and-drop multiple PNG, JPG, or WebP images or click “Choose Files.”
  2. Set dimensions – Enter a target width/height, or use the percentage slider. Tick “Maintain Aspect Ratio” to avoid stretching.
  3. Download – Hit “Resize” and receive a compressed ZIP with all your optimized images, renamed and size-stamped.

Supported Formats & Advanced Options

  • Input: .png, .jpg, .jpeg, .webp, .bmp
  • Output quality slider (1–100) for JPEG/WebP
  • Smart sharpening to retain crisp details on down-scale
  • Optional EXIF wipe to strip GPS & camera metadata for privacy

SEO & Performance Benefits

Search engines reward fast-loading pages. By right-sizing images to the exact dimensions required by your layout, you can:

  • Improve Core Web Vitals scores (Largest Contentful Paint, CLS)
  • Reduce bounce rates on mobile connections
  • Boost Google PageSpeed Insights grades without complex build tools

Popular Use Cases

• Compress product photos before uploading to Shopify or WooCommerce
• Resize hero banners for WordPress to 1920 × 1080 px
• Prepare thumbnails for YouTube, Pinterest, and Instagram Reels
• Shrink screenshots for presentations and email attachments

Frequently Asked Questions

Is the tool really free?

Yes—no paywalls, watermarks, or daily caps.

Do you keep any copies of my images?

No. All processing happens in your browser’s memory and vanishes once you close the tab.

Can I upscale images?

This tool focuses on downscaling. For AI upscaling, try our upcoming “Image Enhancer” (Contact us and join the beta waitlist).

Ready to speed-up your site? Upload your images now and watch your page-load times drop!