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AI Photo Tools

Image Crop Tool

Crop images to common ratios such as square, 16:9, 4:3, and 4:5 directly in your browser.

Before You Use
  • File, image, and document tools run in the browser, but originals may still contain personal or sensitive information. Review both source files and outputs before sharing or submitting them.
ToolRuns in the browser
Image Crop Tool working example

Crop images to common ratios such as square, 16:9, 4:3, and 4:5 directly in your browser.

Runs in your browser
Sample result
Example Image Crop Tool result
Proportion result
- Missing value x: 12
- Cross-products: 2×12 = 3×8 = 24
- Review the input unit and rounding rule
Next step: compare the two cross-products or test a second known proportion
The interactive tool loads in this area when JavaScript is enabled.

How to use Image Crop Tool

Common uses include Prepare social thumbnails, Crop product photos, Make fixed-ratio card images.

  • Open Image Crop Tool and enter the three known values in a:b = c:x.
  • Keep a, b, and c in compatible units and make sure the divisor is not zero. Focus first on Prepare social thumbnails.
  • Calculate x, then compare a×x with b×c to verify the proportion. Use the next pass to Make fixed-ratio card images.
  • Record x together with the input values, unit, and rounding rule before you Crop product photos.

Useful for

  • Prepare social thumbnails
  • Crop product photos
  • Make fixed-ratio card images

Common issues

The result is undefined or infinite.

Make sure the value used as the divisor is not zero and that every known field contains a number.

The proportion is numerically correct but the real quantity is wrong.

Convert all inputs to compatible units before calculating and keep the unit with the result.

How to interpret the result

Use x only after confirming the proportion order, compatible units, cross-products, and rounding precision.

Related workflow

Next path: Image Crop Tool -> Image File Size Estimator -> Image Flip and Mirror Tool. Keep the original input nearby so you can compare each result before using it elsewhere.

Privacy and review notes

This tool is designed to process inputs in the browser where the workflow allows it. Photo and AI-assisted outputs are previews or references and should be checked before publishing. Use non-sensitive examples and review the output before sharing or submitting it.

Basis and limitations

Basis

  • The tool reads selected files, images, documents, or text in the browser for conversion, compression, merging, extraction, or preview.
  • File-style tools are designed for local-first preparation before sharing, upload, or publishing.

Limitations

  • Even when processing happens in the browser, source files and outputs may contain personal data, location data, metadata, or copyrighted material.
  • Large or complex files can behave differently depending on browser memory and device performance.

Official check

  • Before sharing, submitting, publishing, or delivering files, review the source and output for sensitive data, permissions, and quality.

References and methodology

  • Official external source: Korea Privacy Portal — Korean government guidance to check before storing or sharing personal data in files.

Review scope: We automatically check that the calculation basis and official source links are shown. No licensed medical, legal, or tax professional has reviewed this result individually, so confirm with the responsible agency or a professional before an important decision.