When you only want to keep part of a photo, when you need a square profile picture, or when a YouTube thumbnail has to fit 16:9 — that is what cropping is for. This tool offers the aspect ratios people use most, such as 1:1, 4:3, 16:9, and 3:4, plus a 'Free' mode that keeps the original aspect ratio and simply trims the size. As you adjust the crop area's size and its horizontal and vertical position with the sliders, the region that will be kept is shown live over the preview, so you can line it up precisely while watching the result.
Cropping works by having your browser's Canvas pull the exact rectangle you choose straight from the original pixels, so the quality of the cropped area stays identical to the source. Everything runs on your own device, which means your photo is never sent to a server, and once it is done you can check the output size and file size and download right away. It is especially handy for matching profile, thumbnail, and social-media upload specs.
It is intuitive to use. Pick a ratio and a rectangle in that ratio appears over the preview; use the 'Crop area size' slider to decide how wide to grab and the horizontal and vertical position sliders to decide what to center on. If the area runs past the edge of the image, it snaps back inside the boundary automatically, so you never end up cropping empty space from wrong coordinates. Because it never crops larger than the original, the result is always a portion of the image at the original quality.
How to Use
- 1
Select an image
Drag in the photo you want to crop, or add it with the file picker. A crop-area preview appears over the original.
- 2
Choose a ratio
Pick 1:1, 4:3, 16:9, or 3:4, or choose 'Free' to trim while keeping the original aspect ratio.
- 3
Adjust area & position
Set how much to keep with 'Crop area size' and where to center it with the horizontal and vertical sliders. Watch the preview to confirm.
- 4
Crop & download
Click Crop to see the result preview and its size. Save it with the download button.
When It's Useful
Make a square profile picture
Crop at 1:1 with the face centered to fit KakaoTalk, Instagram, or GitHub profile specs right away.
YouTube & blog thumbnail specs
Crop at 16:9 so your cover image fills the frame with no cut-offs or empty margins.
Remove unwanted background or margins
Trim away cluttered background or empty space at the edges to draw the eye to the subject.
Pull a vertical social image
Crop at 3:4 to extract a vertical composition that suits Instagram or Pinterest from your original.
Tips
- Use 1:1 for profile pictures, 16:9 for YouTube and blog cover images, and 3:4 for vertical social images — these are the standards.
- To keep the original aspect ratio and just shave the edges a little, lower only the crop area size in 'Free' mode.
- For portraits, nudge the vertical position up a bit so the face sits in the center; it looks better.
- Lowering 'Crop area size' zooms in to a tighter crop, and the position sliders let you move that center freely.
- If you need an exact pixel size after cropping (for example 1080×1080), use the 'Resize' tool to hit the precise px.
- Because it only crops smaller than the original, the area is extracted with no loss of quality.
FAQ
Can I draw the area freehand by dragging?
This tool works with aspect-ratio presets and position/size sliders. The area to be kept is shown live on the preview, so you can line it up precisely with the sliders alone.
Which ratios can I choose?
It offers 1:1, 4:3, 16:9, and 3:4 presets, plus a 'Free' mode that keeps the original aspect ratio and only trims the size.
Does cropping lower the quality?
No. It extracts the pixels of the chosen area straight from the original, so the quality of the cropped part is identical to the source.
Is my image uploaded to a server?
No. Cropping runs 100% in your browser, and your photo is never sent anywhere.
How do I make it square?
Choose 1:1 for the ratio and the crop becomes square automatically. Use the position sliders to center the part you want.
Can I know the result size in advance?
Yes. As you move the sliders, 'Result size' shows the width and height in pixels that will be cropped, live.
Does the format change after cropping?
It keeps the original format: JPG stays JPG, PNG stays PNG, WEBP stays WEBP. To change format, follow up with the 'Convert Format' tool.
Can I also enlarge beyond the original?
No. Cropping is for extracting an area, so it never gets bigger than the original. To enlarge, use the 'Resize' tool.