PNG Compressor

Reduce PNG file size in your browser. Free, no upload, client-side.

Compression Settings

Adjust compression quality to reduce file size

PNG

Converting to PNG format

Smaller SizeBetter Quality

Binary-search quality so output stays under this size. Ignored if Off.

Resize so longest edge does not exceed this (smaller pixels → smaller file). Uses stepped downscale to keep image sharp.

Auto = only when noise detected. On = always. Off = never.

Lower = preserve detail, higher = smoother (can soften image).

Flatten to white; smaller file (WebP ~10–25%, PNG with fewer colors).

Drag & drop your images

or click to browse • Multiple files supported

Industry-grade: JPEG, WebP, PNG (pngquant).

PNG Compressor

Compress PNG images in your browser. Free, no registration. Stays PNG or convert to JPG/WebP.

PNG is lossless, so files can be large. Compressing PNG reduces file size—either by re-compressing as PNG (smaller size, same quality) or by converting to JPG/WebP for much smaller files with optional quality loss. Our tool lets you reduce size while keeping PNG or switch to a smaller format. All processing is in your browser.

When to use PNG Compressor vs other formats

Compress PNG when file size is too big for web or email. Keep PNG when you need transparency or lossless. Convert to JPG when you don't need transparency and want the smallest size. Convert to WebP for web with good compression and optional transparency. Use AVIF where support allows for even smaller size.

Compatibility

Compressed PNG stays PNG and is universally supported. If you convert to JPG or WebP, compatibility follows those formats. Transparency is lost when converting to JPG.

Quality considerations

PNG-to-PNG compression is lossless. PNG-to-JPG or WebP is lossy; choose quality based on use. For logos and graphics, keep PNG or use high-quality WebP to preserve sharp edges.

Example use cases

  • Shrink PNG screenshots or UI assets for web.
  • Reduce PNG size for faster page loads or email.
  • Create smaller PNG copies for backup without losing quality.
  • Convert large PNG to WebP or JPG for web delivery.
  • Batch compress PNG exports from design tools.

Best practices

  • Use 80–90% quality for web and email to keep images sharp while reducing size.
  • Start from the best source file; compressing an already low-quality image can make it worse.
  • For photos use JPG or WebP; for graphics with transparency use PNG or WebP.
  • Batch compress multiple images with the same settings for consistency. All processing is client-side.
  • Preview before downloading to confirm the result; adjust quality or format if needed.

Common use cases

  • Web and email — Reduce photo and image size for faster page loads, email attachments, or messaging.
  • Social media — Meet upload limits and keep quality good for Instagram, Facebook, and other platforms.
  • Thumbnails and galleries — Create smaller copies for thumbnails, galleries, and app assets.
  • Storage and backup — Shrink images for cloud storage or backup without losing acceptable quality.
  • Screenshots and UI — Compress PNG screenshots or UI assets for documentation and web.

Powered by browser APIs and client-side processing.

← All formats (JPG, PNG, WebP)