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Crop picture online by exact pixels

To crop a picture here, resize the box with its handles until it covers only the part you want to keep, or type its left, top, width and height in pixels. Then download the result as a PNG. The image cropper runs in your browser and opens JPEG, PNG, WebP and other formats your browser can decode.

1. Choose your image

JPEG, PNG, WebP and other formats your browser can decode. Available memory and browser support determine which images can open.

No image selected.

2. Select what stays

Drag the box to move it. Drag a handle to resize it. The pixel fields work with your keyboard, too.

Your image and crop selection will appear here.

Crop coordinates and dimensions

Coordinates start at 0 in the upper-left corner of the oriented image. Square mode keeps width and height equal.

Choose one image to begin.

3. Your cropped image

Your cropped PNG will appear here.

PNG keeps transparency. Export creates a still image, removes source metadata, and uses standard sRGB color; HDR and wide-gamut appearance may change.

How to crop an image in your browser

To crop an image online, choose the image, then resize the box with its handles or type its position and size in pixels. Select Crop image and then Download PNG. The pixel fields work from the keyboard too.

  1. In the Choose your image panel, select Choose image and pick one file.
  2. In the Select what stays panel, drag the box to move it and drag a handle to resize it. The shaded area outside the box is what the crop removes.
  3. Set Aspect ratio to Free rectangle or Square · 1:1.
  4. For an exact crop, type values in Left (px), Top (px), Width (px) and Height (px).
  5. Select Crop image. The result and its size appear in the Your cropped image panel.
  6. Select Download PNG to save the file.

Reset selection goes back to the whole image, and Clear image removes it from the page. Any change to the box or the fields hides the old result until you crop again.

Crop an image by exact pixels

The four pixel fields describe the crop on the full-size image, counted from 0 at its upper-left corner. Left and Top place the corner of the box, and Width and Height set its size. The box has to fit inside the image, so Left plus Width cannot pass the image width and Top plus Height cannot pass its height. The fields take whole pixels only, and a value that breaks these rules disables Crop image and shows a message.

For example, a 400 × 300 image cropped with Left 200, Top 0, Width 200 and Height 150 keeps its top right quarter, because 200 + 200 = 400 and 0 + 150 = 150 both fit. The download is 200 × 150 pixels and its name adds the size, so photo.png becomes photo-crop-200x150.png.

Square · 1:1 keeps Width and Height equal. Switching to it sets both to the smaller value, so a 120 × 100 box becomes 100 × 100.

What the cropped PNG keeps

The download takes the selected area from the full-size image and does not scale it. A browser test fills a 1600 × 1000 image with opaque colors that encode each pixel's position and checks every exported pixel against its source.

Every download is a PNG with 8 bits per channel, so a 16-bit PNG loses precision. Transparency stays, but the color of a semi-transparent pixel can shift. The export leaves out the source metadata, such as camera EXIF fields, and writes sRGB color, so HDR and wide-gamut photos can look different. A JPEG photo saved as PNG can be a larger file, and the result panel tells you when the PNG is larger than the file you chose.

The tool applies the EXIF orientation first. A photo stored sideways with a rotation tag opens upright, and the pixel fields count from the corner of the upright picture.

Limits

The crop is always a rectangle, with no circle or freehand shape. Aspect ratio offers Free rectangle and Square · 1:1 only, with no 16:9 or 4:3 preset. Each run crops one image, and the page has no drop zone.

The tool does not resize or rotate the picture. There is no automatic or AI crop and no JPEG or WebP output. An animated GIF or WebP becomes one still frame.

Your browser's own decoder decides which files open. An SVG does not open in Chrome, because the tool decodes files as bitmap images. Convert it to PNG first with SVG to Raster. A file the browser cannot decode, or an empty file, gets an error message and no download.

The page sets no size limit of its own, but an image that is too large or too long for the browser's canvas or memory stops with an error. While a file opens or a crop runs, Cancel & clear stops the work.

Questions

What does it mean to crop a picture?

Cropping an image keeps one rectangle of it and removes everything outside that rectangle. The pixels you keep stay at their original size, so the picture gets smaller in width, height or both. On this page you set the rectangle with the box or the pixel fields and download the cropped picture as a PNG.

Does cropping a picture lower its quality?

The tool does not scale the pixels you keep. It copies them from the full-size image into the PNG, and a browser test checks each opaque exported pixel against its source. A 16-bit, HDR, wide-gamut or semi-transparent image can lose some color detail, because the PNG stores 8-bit sRGB color.

How can I crop images for free?

Open this page, select Choose image, set the box, select Crop image and then Download PNG. The site has no account or payment step. The download holds only the pixels you selected, so the tool adds no watermark or logo. To crop another photo, select Replace image.

How do I crop an image on my phone?

To crop a photo on your phone, open this page in its browser and tap Choose image. Resize the box with a finger on a handle, which takes touches across a 44-pixel area. Then tap Crop image and Download PNG. If the browser lacks a feature the tool needs, the page says so.

How do I crop a picture from a screenshot?

Save the screenshot as an image file, then choose it on this page. Drag the handles until the box frames the window or area you need, or type its position and size in pixels, then select Crop image. The PNG download is named after the screenshot with the crop size added, such as screenshot-crop-800x600.png.

How do I crop out part of an image?

Resize the box with its handles until it covers the part you want, or type its position and size in pixels. Then select Crop image and Download PNG. The PNG holds only the area inside the box. The tool keeps one rectangle, so it cannot cut an object out of its background or remove an area inside the picture.

Is my image uploaded?

No. The page decodes, crops and encodes the image in your browser, inside a background worker, and the crop code sends no image data over the network. In browser tests the only requests during opening, cropping and download were for the page's own files. Clear image, or leaving the page, releases the image from memory.