Resize PNG

Resizing PNG while keeping transparency

PNG is the format of choice for images that need transparent backgrounds - logos, icons, interface elements, overlays, and product cut-outs. When resizing these assets, preserving the alpha channel is critical. A logo resized to a standard web icon size must retain its transparent background so it can be placed on any page colour without a visible box around it. This tool keeps the alpha channel fully intact through the resize, producing a lossless PNG with the same transparency as the original.

Design assets destined for specific placements often need to hit exact pixel targets. A platform icon might require 512x512, an app store image might require 1024x1024, and a favicon source might require 32x32 — then convert to ICO for use as a multi-size favicon. PNG resize with precise dimension input makes it straightforward to produce these exact sizes from a single high-resolution master, without quality loss and without changing the transparency.

Managing PNG file size after resizing

PNG files grow quickly with increasing dimensions because the format stores every pixel without lossy compression. A large PNG logo resized down should produce a noticeably smaller file, but if the output is still larger than expected, running it through the compress PNG tool will reduce the file size further through lossless optimisation, without touching the pixels or transparency. For assets where transparency is not required, converting to JPG or WebP after resizing will produce much smaller files.