Logo
EraserEraser v1.2.0

Bulk Image Compressor

Batch compress images and convert formats. Supports WebP, JPG, PNG. Client-side processing, secure and fast.

80%
px

Drag & Drop images here, or click to upload

Supports JPG, PNG, WebP (Bulk selection allowed)

Introduction

Bulk Image Compressor is a powerful tool designed for developers and designers to quickly optimize images. It helps you convert large JPG/PNG images to lightweight WebP format, or unify image quality and dimensions to reduce file size and improve page load speed.

  • Batch Processing: Drag and drop dozens of images to process them sequentially.
  • Format Conversion: Supports converting to WebP (Recommended), JPG, or PNG.
  • Quality Control: Adjust compression quality (1-100%) to balance quality and size.
  • Size Limit: Set maximum width to automatically scale down images.
  • Quick Preview: Hover over thumbnails (Desktop) or click (Mobile) to preview.
  • One-click Download: Download all processed images as a single ZIP file.

FAQ

WebP is a modern image format developed by Google. It provides superior lossless and lossy compression for images on the web, usually 25-34% smaller than comparable JPEG and PNG images.
It depends on your device performance. We process images sequentially to prevent crashing, but we recommend processing under 50 images at a time for the best experience.
Yes! If you convert PNG to WebP or PNG, transparency is preserved. If converting to JPG, transparent areas will become black or white (depending on browser implementation).

Privacy & Security Statement

Your data security is our top priority. This tool uses Client-side Computing technology, meaning all processing happens instantly on your device (phone or computer).

This means: No content you enter is ever uploaded to the internet or our servers. Whether it's confidential documents, private diaries, or code, you can safely paste and process it here.