compresspng.net guides & articles
11 in-depth guides on Compress PNG and related topics.
Hitting a size limit
Quality and transparency
Quality and transparency
How to Compress a PNG Without Losing Quality
Lossless compression caps at 15%. Real savings come from palette reduction, which is invisible on most images.
Quality and transparency
PNG Transparency and Compression
Transparency survives PNG compression untouched. The real threat is palette reduction.
Formats and file size
Formats and file size
Does PNG Compress? How PNG Compression Works
Lossless by design, huge for photos, tiny for flat graphics.
Formats and file size
How Much Can a PNG Actually Compress?
Real PNG compression percentages by image type, with hard numbers and the one thing that determines them.
Formats and file size
PNG vs JPG vs WebP: Which Gives the Smallest File?
JPEG crushes photos. PNG handles text and UI. WebP beats both, with one catch.
PNG compression how-to
PNG compression how-to
How to Compress a PNG
Two levers shrink a PNG: lossless optimisation or palette reduction. Pick the right one.
PNG compression how-to
How to Compress Multiple PNG Files at Once
Stop opening every PNG by hand. Batch them, keep the originals safe, and get consistent results every time.