Image Resizer & Cropper

Resize vs crop: what is the difference and when to use each

Resizing changes the dimensions of the entire image, maintaining (or not) the original aspect ratio. Cropping selects a specific region and discards the rest. Understanding the difference prevents distortions, unexpected borders and images that are wrong for the destination, whether a document, social network or thumbnail.

Choose the mode and apply the transformation in three steps

1. Drag your image to the upload area or click to select a file from your device.
2. Choose the mode: Resize (enter dimensions), Crop (drag the handles on the overlay), or Presets (select a ready-made format).
3. Click Process image and then Download result to save the file to your device.

Use this tool on your site

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Sources and references for this tool

These references help contextualize formulas, standards, APIs and limitations used on this page. They do not replace professional validation when a result has legal, financial, medical or operational impact.

• CanvasRenderingContext2D.drawImage(), Web APIsMDN Web Docs, Canvas method with source region crop support, foundation for simultaneous crop and resize.
• HTMLCanvasElement, Web APIsMDN Web Docs, Canvas 2D interface used to resize and export images in the browser.
• Image Resizing Algorithms, Pillow DocumentationPillow / Python Imaging Library, Explanation of interpolation algorithms (nearest, bilinear, bicubic, lanczos) and quality trade-offs.
• ICAO Doc 9303, Machine Readable Travel Documents, Part 1ICAO, Official specification for photo dimensions and requirements in travel documents (ICAO passport).
• Pointer Events, W3C RecommendationW3C, Pointer events specification used in the interactive crop interface with drag-and-drop handles.

Frequently asked questions

Where to go next