Crop Image
Crop images locally in your browser — no upload, zero server costs.
Drag & drop your image here
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About Crop Image
Crop images to remove unwanted areas or focus on specific parts. Drag the handles on the canvas or use the numeric inputs for precise control.
All processing happens locally in your browser using the HTML5 Canvas API. No files are uploaded to any server.
Technical Specification
Image Cropping & Region Extraction Engine
Overview
The ToolsForges Crop Image tool extracts specific regions from images using visual selection controls, producing cropped output that retains only the desired portion of the original image. Upload an image, drag the crop handles to define the extraction region, and receive a cropped output containing only the selected area.
Feature Specifications
- Visual Crop SelectionUse draggable handles overlaid on the image to define the crop region visually, with real-time preview showing exactly what the output will contain before committing.
- Aspect Ratio LockingLock the crop region to specific aspect ratios — square, 4:3, 16:9, custom — ensuring consistent output dimensions for batch processing or platform-specific requirements.
- Pixel-Exact DimensionsView and adjust crop dimensions in pixels for precise region selection, ensuring the output meets exact size requirements for web publishing or document embedding.
- Original Quality PreservationThe cropped output retains the original image quality within the selected region, with no compression artifacts or quality degradation introduced by the cropping operation.
Architecture
The cropper uses the browser's Canvas API to extract the selected region from the source image. The crop coordinates are applied using canvas.drawImage() with source and destination rectangle parameters, then exported using canvas.toBlob().
Frequently Asked Questions
What image formats are supported for cropping?
The tool supports all image formats displayable in web browsers, including JPEG, PNG, WebP, GIF, and BMP. Output format matches the input format by default.
Can I crop to a circle or custom shape?
The current implementation supports rectangular cropping only. Custom shape cropping is planned for a future release.
Does cropping affect image quality?
No. Cropping extracts the selected pixel region without modification, preserving the original quality, resolution, and color depth of the source image.
Is my image data stored?
No. All uploaded images and cropped output are processed entirely within your browser. No image content is transmitted to external servers.