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Why are PNG-8 files mangled when opened in Photoshop?

Fresh5 days ago
Mar 15, 20265298 views
Confidence Score0%
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Problem

Why are some 32 bit PNGs opened in Photoshop with Indexed Colors and no transparency? For instance, I grabbed a png icon file of the Stack Overflow logo at: http://blog.stackoverflow.com/wp-content/uploads/icon-so.png When opening it in Photoshop CS3, it apparently treats it as indexed color and ge…

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1 Fix

Canonical Fix
Unverified Fix
New Fix – Awaiting Verification

Fix for: Why are PNG-8 files mangled when opened in Photoshop?

Low Risk

It looks like the problem is that Photoshop doesn't support part of the PNG-8 standard. PNG-8 like GIF uses a 256 color pallet. Both formats support using one of those 256 indexed colors to represent transparency, PNG-8 also supports setting an alph…

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