Resize a PNG

Scale PNG images to exact pixel dimensions with transparency preserved.

Scale a PNG to exact pixel dimensions with its alpha channel and colours preserved exactly — no quality setting, because PNG has none to offer.

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or choose an image from your device

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Accepts PNG images · No fixed size limit — we adapt to what your device can handle. Very large files may take longer or show a warning.

About Resize PNG

Why there's no target-KB mode here

PNG is lossless, so there's no quality dial to trade against file size — the only way to change a PNG's byte count is to change its pixel dimensions or switch format entirely. If you need a specific KB figure, Resize JPG or Resize WEBP can search for it directly; this tool focuses on exact, lossless scaling.

What happens to transparency

The canvas the image is redrawn onto starts fully transparent, and the alpha channel is scaled along with the colour data, so soft shadows and cut-out edges stay soft rather than picking up a white halo at the new size.

Settings and output

Width and height fields only

Type the exact pixel dimensions you need. There's deliberately no quality or format control here — this tool exists for exact, lossless PNG scaling.

When to use it

Scaling a transparent logo or icon to the exact pixel size a layout calls for.
Resizing a screenshot or diagram without introducing any lossy compression.
Producing multiple fixed sizes of the same graphic for different placements.

Limitations to know

There's no target file size option, since PNG has no quality setting to search over.
Enlarging beyond the source resolution doesn't add detail — you get a bigger, softer bitmap.
Very large PNGs are limited by the memory available in your browser tab.

Common problems and fixes

Why didn't the file get much smaller after resizing?

Fewer pixels usually does shrink a PNG, but by less than the same resize would shrink a JPG, because PNG's compression already handles flat and repeated regions well. If you need it smaller still, switch to WebP via the PNG Compressor.

The transparent edges look slightly different at the new size.

Scaling always resamples the alpha channel along with colour, which can very slightly soften a hard edge. This is unavoidable when changing pixel dimensions.

Can I resize a PNG bigger without it going blurry?

Not from a bitmap — there's a fixed pixel grid to work with. If you still have the original vector artwork, use SVG to PNG at a larger declared size instead.

How to use it

1Drop a PNG into the upload area.
2Enter the width and height you need in pixels.
3Press Resize. The image is redrawn at the new size with its alpha channel intact and re-encoded losslessly as PNG.
4Download — the transparency and exact colours of the original survive the scale.

Frequently asked questions

Is transparency kept when resizing?

Yes. The canvas starts transparent and the alpha channel is scaled along with the colour channels, so soft edges stay soft rather than picking up a white halo.

Why is there no target-KB option here?

PNG is lossless, so there's no quality dial to trade against file size — the only way to hit a byte target is smaller dimensions. If you need a specific KB figure, use Resize JPG or Resize WEBP.

Will a smaller PNG always be a smaller file?

Almost always, since there are fewer pixels to store. The result panel shows the real measured bytes either way.

How do I scale a logo up without it going blurry?

You can't, from a PNG — bitmaps have a fixed pixel grid. Export a larger PNG from the original vector, or use the SVG to PNG tool if you still have the vector file.