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NJHTools

Image Cropper

Crop images online — drag to select an area or pick a preset ratio, rotate or flip, then download as PNG, JPEG, or WebP. Free, no upload, runs entirely in your browser.

Want to change image dimensions without cropping? Use the Image Resizer →

Drag an image here, or click to upload

JPEG, PNG, and WebP supported — all processing happens in your browser.

How to crop an image online

  1. Drag an image onto the drop zone, or click it to select a file — JPEG, PNG, and WebP are supported.
  2. Drag the crop box to reposition it, or pull the corner and edge handles to resize. Pick an aspect ratio preset to lock the proportions.
  3. Set an exact output width and height in pixels, or leave them empty to keep the crop's native size.
  4. Optionally rotate in 90° steps or flip horizontally/vertically and choose a format — the preview updates automatically — then click Download.

Every image is decoded, cropped, and re-encoded entirely in your browser with the Canvas API — no file is ever uploaded, tracked, or stored.

Crop to a square or social media ratio

Need a perfect square for an avatar, or a 16:9 thumbnail and 9:16 story for social media? Pick the matching aspect-ratio preset and the crop box locks to those proportions, so you can drag it over exactly the part of the image you want without distorting it. Use 1:1 for square profile pictures, 4:3 or 3:2 for classic photos, and Original to keep the source image's own ratio.

Set the output size of your crop

After choosing a crop area, you can optionally enter a width and height in pixels in the output-size fields. Keep Lock ratio enabled and the other dimension is calculated automatically to preserve your crop's proportions. To resize whole images — or many at once — without cropping, use the Image Resizer.

Frequently asked questions

How do I crop an image to a square?
Upload your image, select the 1:1 preset to lock the crop box to a perfect square, drag to position it over the area you want, then click Download. Everything runs in your browser — nothing is uploaded.
Can I set an exact output size for the cropped image?
Yes. After choosing your crop area, enter an output width and height in pixels, with the aspect ratio locked or unlocked. To resize whole images or a batch without cropping, use the Image Resizer instead.
Is this image cropper free and private?
Completely free with no signup, no account, and no watermark. Every crop and rotation happens locally with the Canvas API, so your images never leave your device.
What image formats can I crop and export?
You can load any image your browser can decode — including PNG, JPEG, WebP, and GIF — and export the result as PNG, JPEG, or WebP.

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