Cropping is the fastest way to improve a photo: cut the clutter, fix the framing, and make the subject fill the frame. You don't need Photoshop for that — a browser is enough. This guide shows how to crop an image online in under a minute, and how to get exact dimensions when a form or platform demands them.
Crop an image in 4 steps
Open the free Crop Image tool. It runs 100% in your browser — your photo is never uploaded.
Drag and drop your JPG, PNG, or WebP file onto the canvas.
Drag the corner handles to frame your shot, or choose a preset ratio (1:1, 4:3, 16:9, 9:16). Hold Shift to lock the ratio while dragging.
Click download. Done — pixels outside the crop are removed, nothing else is changed.
Crop to exact pixel dimensions
Upload forms often demand exact sizes: a 600×600 avatar, a 1200×630 link preview, a 413×531 ID photo. In the crop tool, switch to pixel mode and type X, Y, width, and height directly — the crop box snaps to precisely those values, so what you download is exactly what the form wants.
If you need a specific file size (KB) rather than dimensions, crop first, then run the result through Compress Image — cropping controls pixels, compression controls kilobytes.
Crop to aspect ratios for social media
1:1 (square) — Instagram grid classics, profile pictures, product thumbnails
4:5 / 3:4 (portrait) — Instagram feed; 3:4 (1080×1440) now fills the profile grid without cropping
16:9 (landscape) — YouTube thumbnails, blog headers, presentations
9:16 (vertical) — Stories, Reels, TikTok
Pick the ratio preset, position the frame, export. For a full list of current platform dimensions, see our social media image sizes guide.
Crop multiple areas from one image
Need several cutouts from a single screenshot — say, three product shots from one photo? The NanoImage crop tool supports multiple crop areas in one pass: draw several boxes and export them together as a ZIP. This saves the upload-crop-download loop for every region.
Why crop in the browser instead of an app?
Privacy: server-based croppers upload your photo; NanoImage processes it locally with the Canvas API. Sensitive screenshots, ID photos, and family pictures never leave your device.
Speed: no upload/download round trip — cropping a 10MB photo takes milliseconds.
No account, no watermark, no limits.
FAQ
Does cropping reduce image quality?
No. Cropping removes pixels outside the frame; the remaining pixels are untouched. Quality only changes if you also resize or re-compress afterwards.
How do I crop a circle?
Crop to a 1:1 square first; most platforms (avatars) apply the circular mask themselves. True circular PNG export is on our roadmap.
Can I undo a crop?
In the tool, yes — reset before downloading. After download, the removed pixels are gone, so keep your original file.
What formats are supported?
JPG, PNG, WebP, and GIF (first frame). Output keeps the input format by default.
Ready? Crop your image now →
Explore edit & optimize tools
After cropping, you may need to resize images online or compress images online. Browse edit images online and image optimization tools for the full workflow.