Will the transparent background turn white?

No. A PNG you add is saved as a PNG, and the clear areas stay clear. White only appears if you later convert the file to JPG, which has no transparency.

Can it trim to the content automatically?

Not at the moment. Drag the frame edges in by hand until they meet the visible artwork; on a phone, a ratio button followed by a small drag is often quicker.

How do I crop a PNG into a circle?

Use the circle crop page. It cuts a round shape from a square frame and makes everything outside it transparent, also as PNG.

Why is my cropped PNG bigger in KB than the original?

The original was probably a palette PNG limited to 256 colours. The result is saved in full colour, which can take more space. If size matters more than transparency, convert it to JPG or compress it afterwards.

I need the cropped picture as a JPG. What do I do?

Crop here, then run the PNG through the PNG to JPG converter. Transparent parts become white there, so do it only when the background no longer matters.

Crop PNG Online and Keep the Transparent Background

A PNG is usually chosen for one reason: the transparent area around a logo, sticker, icon or product cut-out. Many quick editors save a crop as JPG, and that fills the empty space with white or black, which shows up as a box once the picture sits on a coloured page or slide.

This page keeps the PNG a PNG. The pixels you keep come out exactly as they were, transparent and semi-transparent edges included, and nothing outside your frame survives.

Before and after

Red paper cutouts with sharp, spiky edges lying on a green gridded cutting mat beside a few white paper scraps — The dashed frame on the left marks the part that was kept: 1920 × 1280 px out of the original 2400 × 1600 px.
The kept part is not scaled up or down.
The image on the right is the actual file the tool above produced.

The part of the photo that was kept, 1920 × 1280 pixels — The dashed frame on the left marks the part that was kept: 1920 × 1280 px out of the original 2400 × 1600 px.
The kept part is not scaled up or down.
The image on the right is the actual file the tool above produced.

How to use it

Pick the PNG from your phone or computer. The frame starts around the middle 80% of the picture.
Drag its edges in to the outermost visible pixels of the logo, or tap 1:1, 4:5, 3:4, 16:9 or 9:16 for a centred shape.
Press Crop and compare the before and after pixel sizes to see how much margin went.
Save the PNG; it opens with the same clear background in slides, documents and design apps.

Trimming empty transparent margins

Exported logos and cut-outs often carry a wide invisible border, so they look tiny when placed and refuse to line up with text. There is no automatic trim here: pull each side of the frame until it just touches the artwork. Leave a pixel or two of air if the edge has a soft shadow or a faded glow, because those faint pixels are part of the design.

For an icon of an exact size, such as 512 × 512, choose 1:1 here first, then send the square to the resize tool, which also keeps transparency for PNG files.

What changes in the file

The crop does not scale anything, so each kept pixel has the same colour and opacity as before. The file is written fresh, though. A small palette PNG (the 8-bit kind many icon tools export) is saved again as full colour and can weigh more than the original even though it has fewer pixels. A print resolution stored in the file is not carried over; the DPI tool can put it back. Very large images, above about 16 million pixels, are scaled down when opened, and the page says when that has happened.

Frequently asked questions

Will the transparent background turn white?: No. A PNG you add is saved as a PNG, and the clear areas stay clear. White only appears if you later convert the file to JPG, which has no transparency.
Can it trim to the content automatically?: Not at the moment. Drag the frame edges in by hand until they meet the visible artwork; on a phone, a ratio button followed by a small drag is often quicker.
How do I crop a PNG into a circle?: Use the circle crop page. It cuts a round shape from a square frame and makes everything outside it transparent, also as PNG.
Why is my cropped PNG bigger in KB than the original?: The original was probably a palette PNG limited to 256 colours. The result is saved in full colour, which can take more space. If size matters more than transparency, convert it to JPG or compress it afterwards.
I need the cropped picture as a JPG. What do I do?: Crop here, then run the PNG through the PNG to JPG converter. Transparent parts become white there, so do it only when the background no longer matters.