GluePuddingTool

Image Cropper

Crop images online by dragging a selection box, with common aspect ratio presets and pixel-precise adjustment. Everything runs locally in your browser with no upload.

FreeOnline Tool
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How to Use

  1. Click the upload area to choose an image, or drag one onto the page.
  2. Drag the crop box on the preview to reposition it, or drag the round corner handles to resize it.
  3. To lock the shape, pick 1:1, 4:3, 3:4, 16:9 or 9:16 from the "Aspect ratio" dropdown, or leave it on "Free".
  4. You can also type exact pixel values into the X / Y / Width / Height boxes below to position the crop area precisely.
  5. Choose an output format (PNG / JPEG / WebP); for JPEG and WebP a quality slider controls how much compression is applied.
  6. Click "Crop and preview" to check the result, then "Download cropped image" to save it.

Click "Load sample image" to try cropping right away without finding an image of your own.

Features

  • Visual drag-and-drop cropping: move the whole crop box or resize it from the four corner handles, with the pixel dimensions of the selection shown live.
  • Aspect ratio presets: 1:1, 4:3, 3:4, 16:9 and 9:16 are built in, or switch to free-form cropping.
  • Pixel-precise input: X, Y, width and height can all be typed in for exact size requirements.
  • Several output formats: export as PNG (lossless), JPEG or WebP, with adjustable quality for JPEG and WebP.
  • Local processing: images are handled entirely in the browser with Canvas and never uploaded, so your privacy is preserved.

Use Cases

Cropping a social media avatar
Turn an ID photo or a snapshot into a 1:1 square for a messaging or social profile picture.
Resizing e-commerce product shots
Crop product images to the aspect ratio a platform requires so they fit both listing thumbnails and detail pages.
Pulling a detail out of a screenshot
Cut the region you actually want to show out of a screenshot or a large image for use in a document or slide deck.
Extracting an ID photo from a scan
Crop the photo area precisely out of a large scanned document by typing in the exact pixel boundaries.

FAQ

Is my image uploaded to a server?
No. Cropping happens entirely in your browser using Canvas, so the file never leaves your device. Close the page when you are done and nothing is left behind.
Which input formats are supported?
Any image format your browser can display, such as PNG, JPG, WebP and GIF, can be uploaded and cropped. The exact list depends on your browser's image decoding support.
Can the crop box be dragged outside the image?
No. The crop box is constrained to the image bounds and stops automatically at the edges, so you can never select an area beyond the original picture.
Should I choose PNG, JPEG or WebP?
Choose PNG when you need a transparent background or lossless quality. Choose JPEG or WebP for a smaller file when transparency is not needed, and use the quality slider to balance sharpness against file size.