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ConvertBox

Crop Image

Crop JPG, PNG, and WebP images with custom dimensions or preset aspect ratios, preview the result, and export locally without uploading files.

✂️

Select an Image File

Crop JPG, PNG, and WebP images with custom dimensions or preset aspect ratios, preview the result, and export locally without uploading files.

Max file size: 50MB

or drag and drop · press Enter to browse

How to Use

  1. Upload the image you want to crop (JPG, PNG, WebP, or iPhone HEIC — up to 50MB per file)
  2. Pick an aspect ratio for the destination: Instagram square 1:1, Stories and Reels 9:16, portrait 4:5, YouTube/TikTok covers 16:9, or "Free" for custom dimensions
  3. Drag the crop frame to adjust position and size; use zoom and rotation controls to straighten or re-center
  4. Click "Crop image" — everything runs locally in your browser and the file never reaches a server
  5. Download as JPG (photos), PNG (transparent logos), or WebP (web-optimized for Core Web Vitals)
  6. For ID photos (Korean passport 35×45 mm, US passport 2×2 inch, EU schengen 35×45 mm) use free crop and set the exact millimeter dimensions

All processing is done in your browser, and files are never sent to a server.

Frequently Asked Questions

Yes, preset options include Free, Square (1:1), Landscape (16:9), Portrait (9:16), and Instagram (4:5).
Yes, you can use the zoom and rotate controls to adjust the image before cropping.
Yes, you can drag and resize the crop area freely.
No. Cropping happens on the HTML5 Canvas inside your browser. Files never leave your device.
EXIF is stripped on output for privacy. If you need it preserved, extract metadata separately before cropping.
Yes. HEIC files are decoded automatically — drag and drop straight from an iPhone export.
Yes. Lock the aspect ratio, then drop multiple files — each is processed with the same crop box.
No. All operations are processed entirely inside your browser's local sandbox using client-side APIs (like WebAssembly, pdf-lib, or HTML5 Canvas). Your files and data never leave your device.
The tool is completely free with no usage limits. However, since processing occurs in your browser's memory, we recommend keeping file sizes under 50MB (especially for heavy files like PDFs or videos) to ensure stability.
No. All tools on ConvertBox are 100% free. We do not insert watermarks, limit features, or require any registration or payment.
Yes. Once the page and its local library dependencies are loaded in your browser, the conversion logic runs completely offline without needing an active internet connection.

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