•  21-09-2019
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Question

How can I access/remove PNG metadata?

I'm looking for a Mac application or a PHP snippet.

Was it helpful?

Solution

Take a look at Smush_it image optimizer + API.

OTHER TIPS

Sorry to post a Windows software, but if you don't find anything good for MAC, there's TweakPNG, which is by far the best PNG disassembler I've seen.

PNGCrush can remove metadata as well as optimize/recompress the bitmap images.

exiftool is a Perl command-line application and library that has the ability to write PNG metadata. It is multi-platform, and even has an OS X installer version.

A search for png on iUseThis yields a long list of apps for trimming pngs.

I have ImageOptim installed, but I cannot remember if that one really was the best of them all. I did try out a few.

My answer to another question gives a short Python script that removes all non-critical chunks. You'll need to download PyPNG, but that's just one Python file.

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