All the positive reviews here are deserved, but I want to add something that's essential, from my point of view, when dealing with PNG: you get even better results when using first ImageAlpha (by the same dev), it then automatically sends its result to ImageOptim and can achieve up to 90% gain!
hello, thank you for your nice app (ImageOptim), but here we have one problem that, when we are going to comprise the images after comprise it giving us back-up the original image in the trash, can you please help me with it! Thank you.
This is a really good app for compressing images, especially PNGs. However, if you run it on a lot of images it kicks the computer fan on pretty hard. Not sure why.
It's so good that I actually want to pay for a free app. I use it everyday. Great support for many formats. Integrates with sites and automatic processes too. Thank you for this great tool. Very sporting of all contributors to open source to make it free.
★★★★★ A long-time favorite with many photographers for fast & easy optimization of PNG and JPEG images for web use. Highly recommended! Support development with a donation if you enjoy using it!
Very nice, this update includes SVG optimisation!!! This adds to an already totally brilliant and essential tool for anyone. I use it to optimise figures before creating PDFs as I have more control in ImageOptim than any of the PDF optimising tools... It works just brilliantly, and integrates with services, so for example for screenshots I use a service that resizes the screenshot 50% and then runs automagically through ImageOptim with lossy enabled to get a PNG reduced by more than 80% in size on average from the original!
Thanks to the developer Kornel Lesiński and all 3rd party related developers for this great app! Cloud storage space and data transfers come at a cost, and whenever possible, size of a file should be reduced. Especially so when a file is shared with other people—thinking in the best interests' of others always pays off. ImageOptim is very helpful in this regard.
Still the only app I've ever encountered that insists on auto-updating without user intervention, and without providing a means of disabling it. The only warning you get is the sudden appearance after quitting the app of a dialogue advising that, "Autoupdater" would like to make changes to the system. Not a single mention of ImageOptim anywhere in that dialogue. The only clue is when you look in the Trash and see the discarded version there. The dev, when contacted, could offer no good reason for this behaviour, and refused to change it. I've disabled it manually, but this shouldn't be necessary.
The last version to work with Snow Leopard 10.6 and Lion 10.7 is ImageOptim1.5.4a4.tar.bz2 , which is a beta. Just add the site's domain name in front of this archive's name to download.
Indispensable. I'm looking into getting Codekit and if so I might not need this. But It's been a great tool that always shave off some more with quality retained or make images generally publishable.
Does a good job of reducing file sizes, but I've encountered several instance where it won't complete its task, indefinitely showing the cog icon next to the images being processed.
Also, the dev, for some reason best known to himself, has decided to allow the Sparkle updater to download updates without user consent, and without offering a user-facing option allowing the user to disable it. Out of the dozen or more apps I have that use the Sparkle framework, this is the only one to be so coded. After conversing with him by email and presenting what I thought were good reasons to include such a feature, the dev still refuses to do so.
Hence, only 3 stars.
"Now code-signed. (Purchased 1-year Developer ID from Apple to avoid blocking of independent software in OS X 10.8 Mountain Lion and 10.9 Mavericks.)"
Please donate to the programmer, to help them pay Apple's developer tax:
http://imageoptim.com/donate.html
PRO: Easy to use, reduces file sizes notably, drag & drop, FREEWARE!
CONS: Slow for bigger images, ruins CMYK images, sometimes you need to do a 2nd pass to reduce even more (should be done automatically).
This is my feedback to help improve this great app! =)
You can't import (flat) Photoshop-files, no preview... and it takes time. ImageOptim will strip the icc-profile (good for websites, bad for photographers). You will save 5-9% of original file size.
No lost of quality.
The two things I would add are:
1. A progress for the current batch
2. Some stats (can be in Console log) to say which algorithms were selected most often.
I might spend the time to figure out how but I'm sure the original dev could do it quicker.
Handled 5000+ png tiles like a pro. This app tries a variety of algorithms several times to find the optimal compression method and settings for each png (of jpg or gif).
Check out the preferences and you'll see why this is more valuable than simple guis that just pipe through a single command line tool.
Does what it says on the tin with very little effort. The only improvement I cold ask for is for it to run faster on large images, but I know that's not possible without replacing the underlying software.
I love it, got tons of images for my last website optimized in some minutes automatically without any noticeable quality loss.
Just drag&drop images to the app window and it does the hard job for you, it let you take a break and eat a slice of pie or continue working without worrying for the monotone task of image optimization.
Oh! And its free. =3
This is an absolutely flawless application. It does what it is designed to do better than any application on my computer (I have hundreds). PNG files from my Web site designer get reduced by up to 80% without any discernible loss in quality! ImageOptim is glorious in its simplicity and ease of use. It's drag-and-drop heaven!
Still one the of the best little utilities of its kind. Does one thing and does it well and does with both major web graphic formats. Features rating on this one is a bit pointless and it doesn't really apply.
Wow. This is the simplest, fastest and wonderfullest png/gif/jpg optimiser eva!
Knocked a good few % off some files even after we had used pngcrush; and supports gifs and jpgs too.
The curious part of me would like to see a log showing which of the attempted optimisations was best, but other than that it's just fabulous :-)
My last review for this was in 2008, and this is still an essential go-to tool. The perfect minimal UI and an excellent set of options for compression. This fully deserves 5 stars, then and now!
I recently discovered this app while reading about a paid competitor. This recent upgrade has risen the bar considerably for this amazing free app. I couldn't imagine coding a website now without it!
So... It's theoretically impossible for this app to decrease the quality of my images, right? If that is the case, then 5 stars all the way! Very simple to use and efficient. Some images have their size reduced by 40% or more. Great for reddit and 4chan browsers who have large collections of images.
Great little app. Sometimes reduces the filesize of small PNGs saved from Preview by about 45%! Whenever I develop a wordpress theme, I just drop the folder on this before uploading to the web - couldn't be simpler.
Nice program and easy to use.
I compared the resulting images with png images optimized by "PNGpong" and PNGpong made smaller files.
How do I have to set the preferences in ImageOptim in order to have the same results as with PNGpong ?
I prefer ImageOptim because it is a program and not a widget.
:-)
This is a wonderful tool; simple to use yet with a whole set of different optimization options available. Drop your images and let it do its magic. It gets a precious space in my dock...
