Image Cropper — FAQ

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Frequently asked questions

Are my photos uploaded to a server?

No. All processing happens locally in your browser. Your photos never leave your device — there is no upload, no server-side processing, and no copy stored anywhere. This is important for photos that contain personal content, documents, faces, or location data in EXIF metadata.

Does it support HEIC files from iPhone?

Yes. The tool includes a WASM-based HEIC decoder that converts HEIC files to a pixel buffer in your browser before processing. The conversion is entirely local. Note that HEIC decoding can be slower than JPEG or PNG for large files — allow a few seconds for the initial load on high-resolution iPhone photos.

How do I crop to a specific aspect ratio like 1:1 or 16:9?

Enable the aspect ratio lock and select or type your target ratio. Once locked, dragging any corner or edge of the crop box adjusts both dimensions while keeping the ratio constant. Common presets (1:1, 4:3, 16:9, etc.) are available in the ratio picker. For a custom ratio, enter the values manually.

What output formats are supported?

JPEG and PNG. JPEG is the right choice for photographs — smaller file size at the same visual quality. PNG is the right choice if the image has a transparent background (JPEG doesn't support transparency) or if you need lossless pixel accuracy. HEIC input is always converted to JPEG or PNG output; the tool does not output HEIC.

Can I resize the image while cropping?

Yes. After selecting the crop region, you can set the output dimensions before downloading. The crop is applied first, then the result is scaled to the target size. If you set a target width, the height is adjusted proportionally to match the crop's aspect ratio, unless you explicitly set both dimensions.

Does cropping remove EXIF metadata?

Yes. The Canvas pipeline writes only pixel data to the output — EXIF data (GPS location, camera model, shooting settings, timestamps) is not preserved. If you need to keep EXIF data, the current version of this tool is not the right choice. Most users consider EXIF removal a feature, especially for images with GPS coordinates.

Can I use this on mobile?

Yes. The tool is responsive and works on mobile browsers. Touch-drag to set the crop region and pinch to resize it. On iOS, you can access your camera roll directly from the file picker. The HEIC processing may take a few extra seconds on lower-end devices for high-resolution photos.