Resize a PNG

Resize a PNG and keep its see-through background clean.

or drop it below · paste works too

FreeNo sign-upResized here, on your own machine.

Choose photoor drop it here · paste works too · several at once is fine

No file to hand?

No picture open Resized here, in this tab

Type a size now, or pick a preset — it applies when a picture opens.

Export

Format

All colours: PNG has no quality dial and keeps every pixel exactly. Fewer colours makes an indexed PNG, often a fraction of the size.

The exact size and bytes appear here before you save.

The file is re-encoded by your browser: camera metadata (EXIF, GPS) is not copied into it.

Print size

DPI

Open a picture to see how large it prints.

Print width

DPI only tells a printer how far apart to put the pixels. It adds no detail. To have the file say it, use DPI in the file below.

DPI in the file

Custom DPI

Off: the browser's encoder writes no DPI value. Most upload forms check pixels and kilobytes, not this tag. Change only the DPI of a file you already have.

Receipt

The receipt appears here once a picture is open: source, requested, delivered, and the resampling chain that ran between them.

A recipe link opens this page with the same size, mode and output, ready for the next picture.

Stored in this browser

Saved presets: none
Last target: not kept
Pictures, file names, bytes: never stored

Drag the box's edges or corner on the canvas, or type the numbers. Keys: L chain · Ctrl Z undo · C compare · hold Space for the original · 0 fit · 1 100% · Ctrl K find a size. How the resampling works.

Clear stays clear. The edges of a logo or a cut-out keep their colour as they shrink.

Opens with PNG output. Pad has a Clear option, and Sharp under Quality suits logos and line art.

A worked example

A 2048 × 2048 logo on a clear background, typed 512: two box halvings then Lanczos3 bring it to 512 × 512, premultiplied, so the anti-aliased edge stays the logo's colour. The receipt says alpha premultiplied; choose Sharp if the logo has thin text.

When another page here fits better

For a photo, resize JPG gives a far smaller file. For a set of widths for a website, resize images for a website writes them all and the HTML to use them.

What stays on your device

The PNG is resampled and written in a worker in this tab, and saved straight to your downloads.

A PNG of a photograph is large by nature. This page will not pretend otherwise; it prints the bytes before you save.

Questions people ask here

Why do other resizers give my logo a dark edge?

Because they average colour and transparency separately, so the invisible black of the transparent pixels bleeds into the edge. This page multiplies each colour by its opacity before resampling and divides afterwards, which is why the edge keeps its colour.

Can a PNG be made smaller in KB?

Fewer pixels make it smaller; PNG has no quality dial. If the file must be under a limit and the picture is a photo, JPG or WebP will get there much more easily.

Does it keep a transparent background?

Yes, as long as the output is PNG or WebP. JPG has no transparency; choosing it shows a warning and fills the clear areas with white.