Crop
Crop by exact pixel bounds, with ratio presets.
This runs in your browser. Nothing is uploaded.
About Crop
Crops a rectangle out of your image using numeric X, Y, Width and Height sliders, with optional aspect-ratio starting points, previewed in your browser before download.
Cropping is how you fix framing after the fact: cut the bollard out of the left edge, tighten a portrait, square off a wide photo for a profile picture, trim the browser chrome from a screenshot. It changes composition rather than format, and it is the only reliable way to get an image into a ratio it was not shot in.
The controls are four numeric sliders — X and Y for the top-left corner, Width and Height for the size of the rectangle — each bounded by your image's real dimensions. There is no box to drag on the image itself; you set numbers, then click Apply preview to see what they selected. The Aspect dropdown is a starting point rather than a lock: picking 1:1 or 16:9 recalculates the rectangle at your image's full width, after which the sliders move freely and can break the ratio again.
Two things to expect. Those aspect presets clamp to your image's height, so on a landscape photo choosing 1:1 hands you the whole frame instead of a square — bring Width down until the two numbers match. And cropping is subtractive: pixels outside the rectangle are absent from the output, so keep the original if a looser frame might be wanted later. Numeric cropping is exact, but plan on a few rounds of Apply preview.
How to use Crop
- 1Drop your image onto the panel or click to browse.
- 2Optionally pick an aspect ratio to reset the rectangle to that shape.
- 3Set X, Y, Width and Height, then click Apply preview to check the framing.
- 4Click Download when it looks right. The crop saves as a PNG.
What it won't do
- No draggable crop box — the rectangle is set with numeric sliders only.
- Aspect presets position the rectangle once and do not hold the ratio as you adjust it.
- Output is PNG, whatever the input format was.
Common questions
How do I crop an image to a square?
Set Width and Height to the same number, then move X and Y until the square sits over the part you want to keep. The 1:1 option in the Aspect dropdown helps on portrait images, but on a landscape one it clamps to the image height and leaves you with the full frame, so confirm the two numbers actually match before applying.
Can I drag a crop box on the image?
No. This tool is driven entirely by the X, Y, Width and Height sliders, and the preview updates when you click Apply preview rather than as you drag. Less immediate than a draggable box, but exact, which is what you want when a spec calls for a particular pixel region.
Does cropping reduce image quality?
No. The pixels inside your rectangle are copied out unchanged — no scaling, no resampling, no re-compression of the region you keep. The image shrinks in dimensions and in file size because it contains fewer pixels, not because anything was degraded. Resizing afterwards is the step that would soften it.
What happens if the crop goes past the edge of the image?
It is trimmed to fit rather than padded. When X plus Width exceeds the image width, the crop stops at the right edge, so the output is narrower than the Width you asked for. The same applies vertically with Y and Height. Check the dimensions on the preview if a result looks unexpectedly tight.
Related tools
Why this one doesn't upload your file
There is no server to upload to. This page is a static file, and the work happens in your browser using the same graphics and WebAssembly code that renders every other site you visit. Your file is read from disk into memory, processed, and handed back as a download. Once the page has loaded you can disconnect from the network entirely and it keeps working. The longer explanation