About the Zoom Tool
The zoom tool lets you look closely at any picture. Click or tap to zoom in, hold Shift or Alt and click to zoom out, or drag a box over the part you care about and the view jumps to fill the screen with it. You can also scroll the mouse wheel or pinch on a phone, and the point under your finger stays where it is as you zoom. Zoom goes from a small overview all the way to 6,400 percent, where every pixel is a visible square. A readout shows the pixel position under the pointer, which is handy for checking small details or finding coordinates. When the view looks right, save the part you can see as a PNG at the picture's own resolution. Your picture stays in your browser.
Updated October 2026
How to use the Zoom Tool
- 1Select an image or drop one on the page.
- 2Click or tap to zoom in. Hold Shift or Alt while you click to zoom out.
- 3Or drag a box around the area you want to fill the screen. Scroll or pinch for fine control.
- 4Use Fit to see the whole picture, or 100% for one picture pixel per screen pixel.
- 5Press Save this view as PNG to keep the part you can see.
Ways to zoom
A click doubles the zoom around the point you clicked. A drag from corner to corner zooms to exactly that box. The wheel and pinch zoom smoothly, always keeping the point under your pointer fixed so you never lose what you were looking at. The buttons zoom in steps of 25 percent around the centre.
Reading the zoom
- Fit shows the whole picture, shrunk if it is larger than the viewer.
- 100% is the true size, one picture pixel per screen pixel.
- Over 100% enlarges pixels. Beyond about 300% the picture is shown as sharp squares.
- Below 100% the picture is smoothed down, so very fine detail disappears.
- The percentage next to the buttons always shows the current zoom.
Good uses
Checking whether a photo is sharp, reading small text in a screenshot, finding a flaw such as dust or a stray pixel, looking at the pixels of an icon or a logo, and finding the coordinates of a spot to use in another tool such as a cropper or a pixel ruler.
Saving a close-up
Zoom to the area, then press Save this view as PNG. The file is the visible part cut from the original at its own resolution, so it is as sharp as the source. It is not a screenshot of the zoomed screen.
Phone and computer
On a computer, use the wheel and click. Arrow keys move, plus and minus zoom and 0 fits when the viewer has focus. On a phone, use two fingers to pinch and one to drag. Zooming helps you check detail before an edit. Move around with the Hand Tool, pick a shade with the Image Color Picker, and trim the picture with Crop Image.
Features
- Click, box, wheel and pinch zoom
- From a small overview to 6,400 percent
- Fit and 100% buttons, and keyboard plus, minus, 0 and arrow keys
- Pixel position readout under the pointer
- Save the visible part as a PNG at full resolution
- Private: nothing is uploaded
Frequently asked questions
How do I zoom in?
Click or tap the picture, press the Zoom in button, scroll the mouse wheel, or pinch with two fingers. To zoom to an exact area, drag a box around it.
How do I zoom out?
Hold Shift or Alt and click, press Zoom out, scroll the other way, or press Fit to see the whole picture.
What does 100% mean?
One pixel of the picture is shown as one pixel on the screen. It is the best view for judging sharpness. On high-density screens, such as many phones, a pixel is physically small.
How far can I zoom?
Up to 6,400 percent. At high zoom each pixel is drawn as a sharp square, so you can see the exact colours.
How do I find the position of a pixel?
Move the pointer over the picture. The readout shows its x and y position, counted from the top left corner at 0, 0.
What does Save this view do?
It saves the part of the picture that is visible, at the picture's own resolution, as a PNG. It does not save the zoomed-in look, so a small area gives a small file.
Does zooming change my picture?
No. Zooming only changes how it is shown. The original file is never changed.
Does it work on a phone?
Yes. Pinch to zoom, drag to move and tap to zoom in. The page does not scroll while you touch the viewer.
Is my picture uploaded?
No. It is shown in your browser.