Compress PNG Online Without Losing Transparency

• Transparency survives untouched: no flattened white boxes, no ruined glass effects on logos and icons.
• Hard edges and flat colors - text, buttons, diagrams - compress cleanly and keep crisp anti-aliasing intact.
• Covers the graphics JPG would smear: screenshots of interfaces, charts, line art and app assets.
• Smaller PNG without changing the format, so you keep PNG where tools and pipelines demand it.
• Default settings handle most files, while manual controls let you squeeze further when a cap approaches.

1. Bring in the PNG - logo, screenshot, icon set or graphic - from your files.
2. Choose the quality level; the tool keeps full alpha transparency at every setting.
3. Preview the result against the original and check the crisp edges on your most delicate asset.
4. Export when you are happy, naming the file so it is clearly the optimized copy.
5. Repeat for the rest of a UI kit or icon pack in a single session.

• PNG is the right container for anything with transparency or hard edges, but its lossless storage makes photos and gradients explode in size.
• Compressing a PNG matters because the apps that need PNG - browsers, design tools, asset pipelines - accept well-optimized files happily while bloated ones slow everything down.
• Unlike flattening to JPG to save space, a compressed PNG keeps every pixel available for later edits - the bytes you win back do not come at the cost of flexibility.

PNG uses lossless DEFLATE-style compression and stores every pixel exactly. That is why it keeps anti-aliased text and alpha transparency intact, but also why photographic gradients and heavy noise swell the file: the encoder is allowed to discard nothing.

When this tool re-encodes, the canvas preserves 8-bit RGBA channels, so transparent layers remain fully editable. The savings come from cleaner re-encoding of repeated runs, not from pixel loss - which is the entire point of compressing a PNG instead of converting it.