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CrateX.app

Image Cropper

Crop one image locally in your browser with HEIC/HEIF input, drag selection, W/H/L/T pixel coordinates, aspect-ratio presets, rotate, flip, shape masks, and PNG download.

Drag & drop image here or click to select

Supports PNG / JPEG / WebP / AVIF plus HEIC / HEIF input; cropped result uses PNG output

Image Cropper

Quick Start

1
Import one image: Select PNG, JPEG, WebP, AVIF, HEIC, or HEIF
2
Set crop area: Drag on canvas or enter W/H/L/T original-image pixel coordinates
3
Adjust ratio and transform: Choose an aspect ratio, then rotate or flip if needed
4
Choose shape: Use rectangle, circle, or another mask for the crop
5
Download PNG: Save the cropped result; shape masks keep transparent areas

Common Scenarios

Avatar cropping

Use 1:1 ratio or circle crop for square/round avatars

Banner cropping

Use 16:9 or 2:1 ratio for cover banners

Remove borders

Crop away black edges or whitespace around image

Fix orientation

Rotate tilted phone photos before cropping

Crop Operations

W/H: Width and height of the crop area in original-image pixels
L/T: Left and top offset from the original image top-left corner in pixels
Ratio: Free, 1:1, 1:2, 2:1, 3:2, 3:4, 4:3, 9:16, and 16:9 presets; locked ratio is maintained while dragging
Shape: Rectangle, rounded rectangle, circle, ellipse, triangle, diamond, pentagon, hexagon, octagon, star, heart, plus, droplet, and cloud masks
Rotate: 90° quick buttons, ±1° (Shift ±0.1°) fine adjustment
Flip: Horizontal/vertical mirror
Zoom: Zoom in/out canvas view (doesn't affect export resolution)

Usage Advice

Slider on left side of input box allows quick value adjustment by dragging
Shortcuts: ↑↓ fine-tune (Shift ×10 / Alt ×5), scroll wheel zooms view
Desktop: Right-click drag to quickly move crop box or image
Mobile: Bottom toolbar can be scrolled left/right to see more buttons
Crop area is automatically constrained within the original image

Limitations & Compatibility

Very large resolutions, repeated transforms, shape masks, or mobile memory limits may slow down or fail at Canvas export time
Currently exports PNG only; shape masks preserve transparency in the PNG output
This is a single-image cropper with a 1-file upload limit; it does not batch crop, queue cloud files, or process animation frames
There is no JPEG/WebP export, quality slider, compression control, social preset library, passport compliance check, background remover, AI edit
Devices with notch/gesture bar have narrower visible area, toolbar scrollable

Privacy & Security

Image cropping runs in your browser. The selected image stays in page memory while this tool is open. Crop state and panel settings may stay in browser storage; if WebDAV sync is enabled, they may sync according to your settings. Image files are not synced by default; the selected image only enters WebDAV attachment sync when you explicitly enable attachment sync. The cropped PNG is generated for download and is not stored as a separate result. On shared devices, clear images, results, saved settings, and site data when needed.

FAQ

6

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All tool processing happens locally in your browser.