Prepare PNG-specific choices for logos, screenshots, interface assets, and transparent graphics.
Static PNG files; APNG is not accepted in this release · File limit: 20 · 5 MB per file
Transparency-aware compression
Choose a PNG strategy that respects transparent edges, crisp text, and flat-color graphics.
Preserve transparent and partially transparent pixels.
Optimize the encoding without intentionally changing pixel values.
Use fewer colors when logos or UI assets can tolerate it.
Animated PNG files stay outside this workflow.
The smallest PNG is not useful if transparency or clean edges are lost.
PNG anatomy
A PNG may combine opaque pixels, partial transparency, text, and flat-color regions. Those properties deserve separate inspection rather than a photographic compression preset.
Test antialiased edges on light and dark backgrounds so flattening or halos cannot hide in a single preview.
Palette changes can affect smooth tones and one-pixel details even when a distant thumbnail appears acceptable.
View the exported PNG against both light and dark backgrounds. Check small text, flat colors, gradients, and partially transparent edges.
PNG strategy
PNG graphics can need transparency, crisp edges, and stable colors. Decide whether decoded pixels must remain exact before considering a reduced color palette.
Use it when contractual colors, interface pixels, or transparent edge values must survive without decoded changes.
Flat artwork may tolerate fewer colors, while gradients, screenshots, and textured illustration can show visible banding.
Use a JPG workflow for an opaque photograph only when transparency is unnecessary. Keep PNG when the image needs transparent pixels.
Check your result
Place the PNG on light and dark backgrounds to reveal fringes around hair, shadows, or antialiased text.
Inspect logos and interface graphics for changed brand colors or lost shades. Palette reduction can affect these areas differently from photographs.
If exact pixels are required, compare decoded pixel values rather than file bytes. A smaller PNG is not by itself proof of a lossless result.
The PNG workflow is designed around preserving alpha transparency. Verify the real processed output in VisionStory before replacing an original asset.
