Image Tools
Image Cropper
Select a source image, define the crop box, and export a new file locally in the browser.
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Choose an image, run the tool, and review the result instantly.
Description
Overview
This page explains what the tool does, when to use it, and how to test it quickly with a built-in sample.
Crop an image to the exact area you need.
Image Input
This tool processes a local image file in the browser. Upload a test image to verify the flow.
This is the most direct tool for cutting out only the part of an image that you actually need. It is well suited for thumbnails, profile images, screenshots, and document snippets where the kept area matters more than the full frame.
Cropping happens entirely in the browser and the source file is preserved. You get a new result without overwriting the original.
When to use it
- When you want to keep only the key area for a thumbnail
- When you need to remove sensitive or unnecessary margins from a UI capture
- When you want a precise excerpt of a larger image for docs or slides
Tips for accurate cropping
Coordinate-based cropping is fast, but it works best when the final use case is decided first.
- Start with the final thumbnail ratio and crop toward that ratio
- Adjust X and Y carefully if the important subject is off-center
- Combine it with
Image Resizerif the cropped result still needs a final target size
Common mistakes
- Setting crop dimensions larger than the source image
- Misunderstanding the X/Y origin and cutting the wrong area
- Cropping first and later discovering the aspect ratio does not match the final use case
- Assuming the original file is overwritten
Example input
File: screenshot.png
Options: x=0, y=0, width=512, height=512
Example output
512x512 cropped image file
FAQ
- Is the image uploaded to a server?
- No. Processing stays inside the browser.
- Does it modify the original file?
- No. The original stays untouched and a new result file is generated.
- Are coordinates and sizes measured in pixels?
- Yes. X, Y, Width, and Height are all pixel-based.
- What happens with negative coordinates or oversized crop values?
- Depending on the input, the result may look empty or be clamped to the source bounds, so previewing the result is important.
- How do I make a reliable thumbnail crop?
- Decide the final display ratio first, then calculate the crop box to match that ratio.
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This tool belongs to the Image Tools category. You can compare similar workflows from all tools on the tools hub .