# CROP // LAB > A free, browser-based image cropping tool. Crop images to exact pixel dimensions, common aspect ratios (1:1, 16:9, 9:16, 4:5, 4:3), or a freeform quad shape for straightening tilted photos. All processing happens client-side in the browser — no image is ever uploaded to a server. ## Key facts - Free to use, no signup, no watermark. - Supported input formats: JPG, PNG, WEBP, GIF and most browser-decodable image formats. - Supported export formats: PNG, JPG, WEBP. - Aspect ratio presets are tuned for common content platforms: YouTube thumbnail (16:9), Instagram post (1:1), Reels/Story (9:16), portrait post (4:5), and classic photo (4:3). - "Free Corners" mode allows dragging each of the four crop corners independently for perspective correction / straightening tilted shots (e.g. a photographed document or whiteboard). Exports as a transparent-background PNG clipped to the exact quad shape. - No image data is transmitted anywhere; all cropping, rotating, and exporting is done with the HTML canvas API in the user's own browser. ## Pages - [Home / Tool](https://easycropper.com/): the cropping tool itself, plus format presets and FAQ.