HomeArticles ToolsAbout SupportSubscribe

// Free Online Tool

Compress PNG

Reduce PNG file size significantly while keeping transparency intact. Convert to WebP for up to 70% smaller files. Free, instant, nothing leaves your browser.

Why PNG files are large — and how to fix it

PNG uses lossless compression, which means every pixel is stored exactly. This makes PNG ideal for logos and screenshots, but results in very large files for photographs and complex images. A PNG photo can be 5–10x larger than an equivalent JPEG. The most effective way to compress a PNG is to convert it to WebP, which supports transparency (like PNG) but uses lossy compression to achieve files 26–70% smaller.

PNG compression options

  • Convert to WebP (recommended): Preserves transparency, reduces file size by 26–70%. Best for web use.
  • Convert to JPG: Maximum size reduction (60–80%), but loses transparency. Best for photos without transparent backgrounds.
  • Re-encode as PNG: The browser’s PNG encoder may produce a slightly different size. Results vary — sometimes smaller, sometimes not. Not recommended as primary compression strategy.

When to keep PNG despite the large size

Keep PNG when you need lossless quality for professional editing, when the file will be re-saved multiple times, or when you’re working with logos that require crisp edges at any scale. For final web delivery, always convert to WebP.

Frequently asked questions

PNG uses lossless compression — there’s no quality setting to reduce. Re-encoding a PNG simply applies the browser’s PNG encoder, which may produce a larger or smaller file than the original depending on the encoder used. For meaningful PNG size reduction, convert to WebP (preserves transparency) or JPEG (no transparency support).
Yes — convert to WebP instead of JPG. WebP supports alpha transparency just like PNG, and produces files 26–70% smaller using lossy compression. The default quality of 82 preserves visual quality well while delivering significant size reduction.
WebP is the recommended replacement. It supports transparency, delivers 26–70% smaller files than PNG, and is supported by all modern browsers (Chrome, Firefox, Safari 14+, Edge). For maximum compression on cutting-edge browsers, AVIF supports transparency too and is 20% smaller than WebP.
For logos, use WebP at quality 90–95. WebP handles sharp edges and flat colors better than JPEG, and the transparency support means your logo will still work on any background. At quality 92, a WebP logo is visually indistinguishable from the PNG original while being 40–60% smaller.