Crop PNG Online — Free, Fast & Private
PNGs get cropped for different reasons than photos do. The typical job here is surgical: isolate one dialog from a full-screen capture, pull a single icon off a sprite sheet, trim dead margin from an exported chart, cut the relevant error message out of a terminal grab. For that kind of work the cropper's defining property is precision — the selection rectangle is tracked in the source image's own pixel coordinates, so what you mark is what you get, at native resolution, with nothing rescaled along the way.
One setting deserves attention before your first download: the output format chips. The tool opens with JPEG selected because photographs are its most common input overall — but for PNG work you will almost always want to click PNG, for reasons the next sections cover. Everything runs locally either way; the capture of your unreleased product or internal dashboard never leaves the machine it was taken on.
Pixel-exact edges for screenshot work
A crop is fundamentally a copy: the pixels inside the rectangle are lifted out unchanged, with no resampling and no interpolation. Combined with PNG's lossless encoding, that means text in a cropped screenshot stays as sharp as the capture itself — every 1px border, every anti-aliased glyph, byte-for-byte faithful. This is exactly what bug reports, documentation, and design reviews need, and exactly what a JPEG export would spoil: lossy encoding smears the hard edges that screenshots are made of, leaving faint ringing around text. Keep the PNG chip selected and the fidelity chain from screen to capture to crop stays unbroken.
Transparency is kept — if the output can hold it
Crop a logo, a game asset, or an illustration that sits on a transparent background, and the region you cut keeps its alpha channel fully intact when exported as PNG or WebP — including partial transparency, like a soft drop shadow that fades across the crop boundary. Choose JPEG output and the format itself forces a flatten: JPEG has no concept of transparency, so see-through areas become solid white. The tool does this flattening predictably rather than surprising you with black, but for anything meant to be layered over other content later, it is still the wrong export. Round destinations are their own case — when the goal is a circular avatar rather than a rectangle, the circle cropper writes the corners transparent for you.
Extracting sprites and assets
Sprite sheets, icon grids, and old design exports often hold a dozen usable assets in one file. Because the source stays loaded after each save, extraction is a loop rather than a chore: draw a selection around the first icon, download, move the same rectangle to the next, download again. Each output is an independent PNG at the sheet's native pixel density, alpha included. The freeform mode is usually right for this — sheets rarely align to neat ratios — but a 1:1 lock helps when the assets are square icons and you want every extraction identically framed.
Ratios, and the job cropping cannot do
Alongside freeform selection there are ratio locks (1:1, 4:5, 3:2, 4:3, 16:9), useful when a graphic must land in a slot of known proportions, like a 16:9 hero slide or a square app tile. What no crop can do is change resolution: cutting a 400px-wide button out of a screenshot gives you a 400px button, and making it 200px wide is a scaling operation. That second step belongs to the PNG resizer, and the order matters — crop first, scale second, so the resampling only ever touches pixels you are keeping. For photographs, where cropping is about composition rather than extraction, the JPG cropper covers the considerations that actually apply there.