Image Cropper
Crop images with free selection or preset aspect ratios including 1:1, 4:3, 16:9, and 9:16. 100% client-side with zero data upload.
Image Cropper
Image Cropper is a 100% browser-based tool for cropping images. All processing happens locally via Web Workers — your images never leave your device.
How to Crop Images Online
- Drag and drop an image or click to select from your device.
- Choose a preset aspect ratio or use Free mode.
- Adjust the crop area by dragging the handles, then click Crop.
Frequently Asked Questions
Got questions about image cropping? We've got answers.
What is a crop preset?
Presets lock the crop area to a specific aspect ratio like 1:1 (square), 4:3 (standard), 16:9 (widescreen), or 9:16 (portrait). Free mode lets you crop to any dimensions.
Will cropping reduce quality?
Cropping removes pixels from the image edges but does not affect the quality of the remaining area.
Is Image Cropper safe to use?
Yes, absolutely. All processing happens entirely in your browser via Web Workers.
Automated E2E Test Suite Logs
Our build systems validate edge-case processing under extreme conditions before each deployment.
Tool Changelog & Updates
- Fix: Fixed crop operation crashing due to non-transferable Blob in postMessage — removed transfer list to match compress/convert pattern.
- Feature: Batch cropping with aspect ratio presets (1:1, 4:3, 16:9, 9:16) — each image processed in parallel via Web Workers.
- UX: Card-based UI showing before/after dimensions and file size change per image.
- Fix: Preserved original image format after crop (no forced JPEG conversion).
- Feature: Initial release with free crop and preset aspect ratios (1:1, 4:3, 16:9, 9:16) — 100% client-side via Web Worker.
- UX: Visual preset selection grid with instant aspect ratio switching.
- Security: Web Worker isolation ensures zero data uploads.