Mac Gems: OptiPNG makes PNG files smaller without losing image quality

Josh Centers , Macworld

Josh Centers is the Managing Editor of TidBITS, as well as a contributor to Boing Boing and The Magazine. He sometimes blogs at his eponymous Web site.


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Editor’s note: The following review is part of Macworld’s GemFest 2013. Every day (except Sunday) from mid-July until late September, the Macworld staff will use the Mac Gems blog to briefly cover a standout free or low-cost program. Learn more about GemFest in this Macworld podcast. You can view a list of this year’s apps, updated daily, on our handy GemFest page, and you can visit the Mac Gems homepage for past Mac Gems reviews.

Over at TidBITS, we use the PNG (portable network graphics) image format exclusively for our images. Sometimes, an image can be 1MB or larger, but since discovering OptiPNG 0.7.4, I’ve been able to substantially reduce those file sizes without any noticeable degradation of image quality.

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Mac Gems: Glui is the screenshot app you didn't know you needed

Serenity Caldwell Associate Editor, Macworld

Serenity has been writing and talking and tinkering with Apple products since she was old enough to double-click. In her spare time, she sketches, writes, acts, sings, and wears an assortment of hats.
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Editor’s note: The following review is part of Macworld’s GemFest 2013. Every day (except Sunday) from mid-July until late September, the Macworld staff will use the Mac Gems blog to briefly cover a standout free or low-cost program. Learn more about GemFest in this Macworld podcast. You can view a list of this year’s apps, updated daily, on our handy GemFest page, and you can visit the Mac Gems homepage for past Mac Gems reviews.

A cross between Cloud and Skitch, Glui ($5) allows you to quickly snap, annotate, and upload screenshots to its Glui.me service via your Dropbox account.

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Mac Gems: Be a better MacBook battery manager with Battery Health

James Galbraith , Macworld

James is the director of Macworld Lab.
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Editor’s note: The following review is part of Macworld’s GemFest 2013. Every day (except Sunday) from mid-July until late September, the Macworld staff will use the Mac Gems blog to briefly cover a standout free or low-cost program. Learn more about GemFest in this Macworld podcast. You can view a list of this year’s apps, updated daily, on our handy GemFest page, and you can visit the Mac Gems homepage for past Mac Gems reviews.

Everyone with a laptop Mac needs to know a handful of tricks to help squeeze a few more computing minutes out of a MacBook battery. Some may decrease the screen brightness, others turn off Wi-Fi, but how do we know if these actions are truly helping matters? Information really does equal power and Battery Health 2.5 provides the battery information you need to get all you can from your Mac laptop.

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Mac Gems: Free up your Mac's RAM with Memory Clean

Chris Barylick , Macworld

Chris Barylick is an Apple-Certified Macintosh Technician living in the San Francisco Bay Area. In his 25 years of tinkering with Macs, he has accidentally lit two (and counting) hard drives on fire. He also wouldn't mind being Gonzo the Muppet when he finally grows up.
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Editor’s note: The following review is part of Macworld’s GemFest 2013. Every day (except Sunday) from mid-July until late September, the Macworld staff will use the Mac Gems blog to briefly cover a standout free or low-cost program. Learn more about GemFest in this Macworld podcast. You can view a list of this year’s apps, updated daily, on our handy GemFest page, and you can visit the Mac Gems homepage for past Mac Gems reviews.

Conventional wisdom says you can never have enough RAM in your Mac. But how about making the most of the RAM you do have? This is the entire premise of Memory Clean 2.8 (Mac App Store link), Fiplabs’ free memory utility designed to purge inactive memory to help free it up for later use.

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LittleIpsum review: Adds placeholder text with just a couple of clicks

Albert Filice Editorial Assistant, Macworld Follow me on Google+

Albert is a former PCWorld and Macworld intern and GeekTech writer, who now works as an Editorial Assistant in the PCWorld Lab. Albert likes to dabble in Web development in his free time. Check him out on Dribbble, or see some of his work on CodePen.
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Editor’s note: The following review is part of Macworld’s GemFest 2013. Every day (except Sunday) from mid-July until late September, the Macworld staff will use the Mac Gems blog to briefly cover a standout free or low-cost program. Learn more about GemFest in this Macworld podcast. You can view a list of this year’s apps, updated daily, on our handy GemFest page, and you can visit the Mac Gems homepage for past Mac Gems reviews.

If you find yourself performing tasks that uses placeholder text frequently, LittleIpsum 2.0.2 (Mac App Store link) is a definite way to speed things up. A simple menu bar application, LittleIpsum stays out of your way until you need it, and performs well when you do.

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Mac Gems: Clear Day beautifully portrays weather information

Jeff Sandstoe , Macworld

Editor’s note: The following review is part of Macworld’s GemFest 2013. Every day (except Sunday) from mid-July until late September, the Macworld staff will use the Mac Gems blog to briefly cover a standout free or low-cost program. Learn more about GemFest in this Macworld podcast. You can view a list of this year’s apps, updated daily, on our handy GemFest page, and you can visit the Mac Gems homepage for past Mac Gems reviews.

If you live in an area with near constant unpredictable weather, then an accurate and trustworthy weather app can be very helpful. Clear Day 2.0 (Mac App Store link) is a beautiful weather forecast app that provides you with all the information that you’ll need to figure out just how many layers you should be wearing when you leave the house.

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Mac Gems: Pixa is an image organizer made for creative work

David Chartier Contributor, Macworld Follow me on Google+

David has been covering Apple and how to get the most out of its products since 2005. Now a freelance tech writer, he runs Finer Things in Tech, jots down thoughts at DavidChartier.com, occasionally starts outlining the great American tech novel, and might still get to snowboard Breckenridge one more time.
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Editor’s note: The following review is part of Macworld’s GemFest 2013. Every day (except Sunday) from mid-July until late September, the Macworld staff will use the Mac Gems blog to briefly cover a standout free or low-cost program. Learn more about GemFest in this Macworld podcast. You can view a list of this year’s apps, updated daily, on our handy GemFest page, and you can visit the Mac Gems homepage for past Mac Gems reviews.

Pixa (Mac App Store link) is iPhoto for designers and writers. It’s an image and inspiration organizer with a slick interface and some smart tools for collecting all the other kinds of images you care about.

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