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PNG Compressor

By Vadim Shpakovski

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Drag and drop PNG images from Finder into the app to reduce their files sizes. This tool is an excellent GUI wrapper around command line tools for PNG compression.

Why do you need PNG Compressor:
✔ Optimize graphics on your website for faster loading and saving the bandwidth
✔ Reduce file sizes of pictures to lower hosting costs
✔ Compress bitmaps in your iPhone or Mac app bundles
✔ Replace console tools like pngcrush, optipng, advpng and pngout with a native Mac app.

What's New in Version 1.1

• Improved General and Advanced preference panes
• A new preference pane Queue for command line tools
• Quick Look panel for previewing selected images
• Displaying of total savings in the status bar
• A contextual menu in the list view
• New preferences for text size and savings in the list view
• Support for “silent” compression when you drag an image into the Dock
• A new option to compress images in any folder automatically
• Press and hold the Shift key on launch to reset all preferences
• Completed images are cleaned up automatically on quit
• Other improvements and bug fixes


Screenshot 1
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Screenshot 3

Customer Reviews

Extremely Average

Thinking I might pay for an app to best "ImageOptim" a free equivalent, I expected considerably improved savings, in-fact the most I saw were of 14%, most less than that, and overall it produced larger files than those from "ImageOptim" - trying to convert those already converted by "ImageOptim" found 0 savings. Save your money, download free alternative.

That said the interface is very attractive and the times are much faster than it's free equivalent.

Another option is to use a lossy compressor such as "PNG mini" from this app store- it reduced my files bt 50% by restricting the pallette.

Good utility - a space-saver

I've been using this since mid 2012. I take a lot of screen grabs and most grab tools don't optimise their PNG output. I have PNG Compressor is configured to watch the output folder for my grab app (currently Monosnap (also recommended))> The result is I'm normally getting a 30+% reduction on my grabs which is a good saving on disk space as the grabs have to hang around for quite a while; this folder 'watching' is neat as it means that once running the utility is a silent pass-through. With PNGs output to other folders, I simply drag them to the app's Dock icon and that works fine. When processing, the needle on the app icon flicks up which is a nice activity tell-back (e.g. in case the app got closed by mistake).

I run with the app set to overwrite originals and have never had any compressed files that were damaged. I use the default 'optipng' option (see Prefs->Queue) which gives a good balance of speed/compression. I've tried the other options but the trade-off to tighter compression is time (although I guess that is also in part how fast your Mac is). You can add add other PNG command line tools to the queue and alter the command lines (if you're confident!) to tinker with optimising if minimal size is a big issue.

If using graphic design tools with well-configured PNG output (e.g. using Photoshop or the like) you may see less compression, but I'd expect that. But, with lesser tools like screen grabbers (whose design focus lies in other areas) a 'post-compressor' like this app is useful and for me PNG Compressor has paid for its place in my workflow.

The developer also responded to several questions I had at outset, which is also a plus.

YMMV, but I recomend this tool if you want a simple compressor for your PNGs.

PNG Compressor
View in Mac App Store
  • £2.29
  • Category: Graphics & Design
  • Updated:
  • Version: 1.1
  • Size: 0.9 MB
  • Language: English
  • Developer:

Compatibility: OS X 10.6.6 or later, 64-bit processor

Customer Ratings

We have not received enough ratings to display an average for the current version of this application.
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