Crop an Image Online
This free image cropper trims an image to an exact rectangular area, entirely in your browser. Choose an image, enter the crop position and size in pixels, and download the cropped result. Because the work happens on your device using the browser’s Canvas, your photo is never uploaded to a server — it is private and instant.
How to Crop an Image
- Choose a PNG, JPG, or WebP image. The tool shows its dimensions.
- Enter the crop area: X and Y (the top-left corner) plus the width and height.
- Press Process Image, preview the result, and download it.
How Cropping Works
Cropping removes the parts of an image outside a chosen rectangle, keeping only the area you want and discarding the rest. You define that rectangle with four numbers: X and Y set where the top-left corner begins (measured in pixels from the image’s top-left), and width and height set how large the kept area is. The tool draws just that region onto a new canvas at full resolution, so the cropped image stays sharp — cropping does not reduce quality, it only changes the dimensions.
Why Crop an Image?
Cropping is one of the most common image edits. You might remove distracting backgrounds, straighten a composition, cut an image to a required aspect ratio for a profile picture or banner, focus attention on a subject, or trim whitespace from a screenshot. Getting the dimensions right matters for social media headers, product photos, and thumbnails, which often need exact sizes. Cropping to the precise pixels you need avoids the awkward stretching or letterboxing that happens when an image is the wrong shape.
Private, In-Browser Processing
Unlike many online image tools that upload your file to a server, this cropper does everything locally using the HTML Canvas. Your image never leaves your computer, which means it is safe for private photos, confidential screenshots, and sensitive documents, and there are no upload waits or file-size limits beyond what your browser can handle. The cropped image downloads directly, keeping its original format (JPG stays JPG, PNG stays PNG).
Tips for Cropping
Note the displayed image dimensions before entering values, and keep your crop within them — the tool clamps the area to the image edges if you go over. For a square crop (ideal for many profile pictures), set width and height equal. To crop to a 16:9 banner, pick a width and set the height to width × 9 ÷ 16. If you need to change the overall size after cropping, use a separate resize tool; cropping changes which pixels are kept, while resizing scales them.
Frequently Asked Questions
How do I crop an image online?
Choose your image, enter the X, Y, width, and height of the area to keep, and press Process Image, then download.
Does cropping reduce image quality?
No — cropping keeps the selected pixels at full resolution. It changes dimensions, not quality.
Is my image uploaded anywhere?
No — cropping happens entirely in your browser, so your image never leaves your device.
Common Crop Sizes
Knowing standard sizes makes cropping faster. Profile pictures are usually square (1:1), so set the width and height equal — many platforms display them in a circle but store a square. Social banners and headers use wide ratios: a common cover image is 16:9 or close to it, so for a 1600px-wide crop you would set the height to about 900px. Product photos for marketplaces often require square or 4:3 images at a minimum pixel size. Video thumbnails are 16:9 (1280×720 is typical). Cropping to the exact ratio a platform expects avoids the automatic, often badly-positioned cropping those sites apply when your image is the wrong shape.
A practical workflow is to decide the target ratio first, then choose a crop width and calculate the height (or vice versa) to match it. For a 1:1 square, width equals height. For 4:3, height is width × 3 ÷ 4. For 16:9, height is width × 9 ÷ 16. Position the crop with the X and Y values to keep your subject centered or following the rule of thirds. Because the tool shows the original dimensions and keeps the cropped pixels at full resolution, you can crop precisely without guessing and without any loss of sharpness in the area you keep.