Online Image Resizer and Cropper
Resize and crop an image locally with a visual selection preview, then download the processed PNG without uploading the source. It helps designers and content editors prepare thumbnails, avatars, and social images without installing an image editor or uploading the source.
What is an image resizer and cropper?
An image resizer changes pixel dimensions while a cropper removes unwanted edges. Combining both operations is useful for thumbnails, avatars, social assets, and responsive content preparation.
How to use this image tool
Choose an image, set a percentage or output size through the crop dimensions, adjust the visible crop rectangle, and select Download PNG. The output is drawn to Canvas at the requested dimensions.
Private Canvas processing
FileReader and Canvas API perform the complete workflow in the browser. The original image and generated pixels never leave this page.
How to use Image Resizer / Cropper for related tasks
Choose an image, adjust crop bounds and scale, inspect the output dimensions, and download the PNG after checking the crop selection.
Related tools: Meta Tag / Open Graph Preview, Favicon Generator.
Frequently asked questions
Is my image uploaded?
No. The selected image is read locally with FileReader and processed in a browser canvas. It is never sent to a server.
What does the crop selection control?
The crop rectangle uses source-image pixel coordinates. Adjust its position and size, then export only that selected region at the chosen output dimensions.
Which image format is downloaded?
The tool exports a PNG data URL so the result has broad browser support and preserves transparency where the source provides it.
How do I resize an image without uploading it?
Select the local file and use the Canvas controls; the browser creates the resized PNG locally and does not transmit the original.