How to crop an image online
- 1.
Load the image
Drop the file onto the box, click to choose it, or paste an image from the clipboard (Ctrl+V).
- 2.
Set the frame
Move the frame and resize it with the handles on the corners and sides. You can also pick an aspect ratio or type exact X, Y, width and height in pixels.
- 3.
Rotate if needed
The “Rotate 90°” button turns the whole photo together with the crop frame.
- 4.
Download
Choose JPG, PNG or WebP, set the quality and download the cropped image.
Preset aspect ratios
Once you pick a ratio, the frame keeps it while you resize, so the result always fits the place it is meant for:
| Ratio | Typical use |
|---|---|
| 1:1 | profile pictures, avatars, square posts |
| 4:5 | portrait posts on Instagram and Facebook |
| 4:3 | compact camera and phone photos, classic slides |
| 3:2 | DSLR and mirrorless photos, 4×6 in (10×15 cm) prints |
| 16:9 | YouTube thumbnails, presentations, wallpapers |
| 9:16 | Stories, Reels, TikTok, YouTube Shorts |
| 35:45 | ID and passport photos in Poland and most of the EU (35×45 mm) |
“Swap portrait/landscape” flips the chosen ratio (4:5 becomes 5:4, 16:9 becomes 9:16) without hunting for another preset.
Cropping without losing quality
Cropping does not scale the image - it cuts out exactly the rectangle of pixels you marked, so the part you keep stays as sharp as the original. Quality can drop only when saving to JPG or WebP at a low quality setting. Choose PNG, or a quality of 90-100%, when every detail matters. Saving to a new file also strips EXIF metadata, including GPS location. The crop is done in your browser - the photo is never uploaded anywhere.
How many pixels will I get?
The result has exactly as many pixels as the frame covers, shown in the width and height fields. Example: from a 4000×3000 px (4:3) photo, the largest 16:9 crop is 4000×2250 px and the largest square is 3000×3000 px. When you pick a ratio, the tool sets exactly that largest centred rectangle, and “Reset crop” brings it back at any time.
The X, Y, width and height values always refer to the full resolution of the original, not to the smaller preview on screen. Rough out the frame with the mouse or a finger, then fine-tune it to the pixel in the fields. With a ratio selected, changing the width adjusts the height automatically.
ID and passport photos (35×45 mm)
The 35×45 mm preset sets a 35:45 ratio (about 0.78), the standard biometric photo size in Poland and many other European countries. The face usually has to fill about 70-80% of the frame height, but always check the exact rules of the office that issues the document. To print the photo at true size, you need at least 413×531 px (300 dpi). This tool only crops - it does not change the background or retouch the face. For a full print sheet with guides, use the passport photo maker.
Common mistakes
- Cropping a tiny area - a 300×300 px piece cut from a large photo looks soft when shown big on screen.
- JPG for transparent graphics - transparent areas become white. Use PNG or WebP.
- Cropping before rotating - rotate first, then set the frame.
- Needing an exact size - cropping sets the shape, not the final resolution. To get e.g. 1080×1080 px afterwards, use the image resizer.
Frequently asked questions
How do I crop a photo to a square?
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Can I enter exact pixel dimensions?
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Does cropping reduce image quality?
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Does it work on a phone?
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Is my photo uploaded to a server?
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Which ratio should I use for Instagram?
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