Logo
Tooooolbox
100% private — no upload

Compress PNG Online

PNG files are losslessly encoded, so they tend to be much larger than JPEGs. The fastest way to shrink them is to convert to WebP (lossless or lossy) or reduce resolution. Drop your PNGs below — transparency is fully preserved.

100% private — no upload
Unlimited
Free
Compression options
Web
Email
Social media
Max quality
Quality80%
Max Width/Height (px)
Output format
Filename suffixphoto-min.jpg

PNG is lossless — which changes the strategy

Unlike JPEG, PNG never discards image data. It compresses by finding patterns and repetitions, which works brilliantly for screenshots, logos, diagrams and anything with large areas of flat colour, and works poorly for photographs where almost every pixel differs from its neighbour. This is why a photo saved as PNG is often five to ten times larger than the same photo as JPEG.

Because there is no quality dial to turn, reducing a PNG means changing what is in it: fewer pixels, or fewer distinct colours. Both are genuine reductions rather than tricks, and both are reversible decisions you make consciously rather than damage applied silently.

Three ways to make a PNG smaller

Resizing is the most effective and most overlooked. A screenshot captured on a Retina display is often twice the dimensions it will ever be displayed at; halving it cuts the file to roughly a quarter with no perceptible difference on screen.

Reducing the colour palette works well for graphics. A logo with six colours does not need 16 million of them, and a palette-based PNG can be a fraction of the size. Finally, if the image is a photograph, the honest answer is that PNG is the wrong format — converting to WebP keeps transparency and typically saves 60–80% over PNG.

Related tools
Frequently Asked Questions

PNG uses lossless compression: every pixel is stored exactly. This makes it ideal for screenshots, logos and graphics with sharp edges, but produces much larger files than JPEG for photographs.

No. Transparency (alpha channel) is fully preserved when you output to PNG or WebP. Avoid JPEG output if your PNG has transparent areas — it will fill them with white.

WebP with lossless mode gives smaller files than PNG while keeping full transparency. For photographs accidentally saved as PNG, JPEG is usually 3–5× smaller.

Yes. Convert to WebP (lossless) in the output format selector. Modern browsers support WebP natively, and file sizes are typically 25–35% smaller than equivalent PNG files.