Batch Image Resize and Compression Tool

Overview #Personal Development

A local-first tool that automates repetitive image processing tasks performed in EC operations, web production, blogging, and SNS management directly in the browser. Drag and drop multiple images, build a processing pipeline with resizing, compression, format conversion, cropping, background compositing, renaming, and more, then download the results as a ZIP file in bulk.

Main Features

• Drag & Drop Support: Load multiple images at once
• Gallery View: Review thumbnails, filenames, dimensions, and file sizes in a list
• Resizing: Choose from width, height, percentage, longest side, or shortest side
• Cropping: Support for aspect ratio preservation, 1:1, 4:3, 16:9, and custom ratios
• Format Conversion: Support for JPEG, PNG, WebP, and AVIF (when environment supports it)
• Quality Adjustment: Adjust compression ratio with a slider, with before/after comparison display
• Background Compositing: Specify background color when converting transparent images to JPEG
• Renaming: Batch rename using template functionality ({number}, {width}, {height}, {format}, etc.)
• Metadata Removal: Automatically remove EXIF, XMP, IPTC, GPS, and color profiles at all times
• Workflow Saving: Save and reuse processing steps as templates
• Demo Mode: Try it out with 10 fictional product images

Characteristics

• Local-First: All processing is completed within the browser; images are never sent to a server
• Privacy-Focused: Automatically removes personal information and metadata
• Efficient Processing: Parallel processing with Web Workers without blocking the UI
• Error Resilience: Other files continue processing even if conversion fails
• Cross-Browser Support: Automatically detects supported formats for each browser

Ideal For

• EC business operators who need to process large quantities of product images
• Bloggers and SNS managers who need image optimization
• Web designers who need to convert to multiple formats
• Anyone who wants to complete image processing locally