ImageOptim is a powerful image lossless compression tool software that provides "lossless" compression services for PNG images, reducing file size by 60%-90%. The compressed image may be only 1/8 of the original size, but the quality is flawless. It is also a picture format conversion software. The converted pictures have the same clarity and retain the original information.

With ImageOptim, you can complete the compression of PNG/JPG images by simply dragging and dropping, without opening the browser and downloading the images manually. You only need one action to complete the whole service, which is more convenient...

1. Support PNG/JPG picture image file compression
2. Support dragging the entire folder, automatically identifying all pictures
3. Support batch compression
4. Support automatic replacement of original image after compression
5. Support automatic compression 24 hours a day, can compress about 7200 pictures a day
6. Support image format conversion

[Picture format support]
Image compression: PNG, JPG, BMP, TIFF

Picture format conversion:
And RAW formats: (DNG, NEF, CR2, ARW, RW2, RAF, CRW, CR2, CR3, MRW, PTX, PEF, X3F)

【Contact information】
If you have any questions, please contact me through the following ways
QQ group: 235890144

【Subscription Instructions】
1. Subscription period: 1 month
2. Subscription price: $1.29/month $9.99/year (applicable in the US)
Prices may vary in different regions. The fee will be deducted from the credit card attached to the iTunes account, and the paid account will be automatically renewed when it expires. If you need to cancel the renewal, you can operate 24 hours before the end of the current payment cycle. After the paid account is activated, it cannot be cancelled. After purchase, you can manage renewals in your account settings.

Privacy policy
Terms of Service

What’s New


1. Optimisez l'expérience logicielle
2. Améliorer la compatibilité logicielle

Ratings and Reviews

4.6 out of 5
603 Ratings

603 Ratings

DomainDick ,


Are you looking for ways to speed up your website? Well even if you aren't you need to be! Because your competition is constantly exploring ways to stay ahead of you and other industry competitors. I have been optimizing websites for clients and my own business ventures for a long time now and by far Image Optimizer wins a permanent place in my toolbox. It easy to use even if you have never optimized or converted an image you are going to catch on quick with Image Optimizer. Just drag and drop your image on top of the little rocket and there ya have it: a perfectly optimized image that in many cases looks better in my opinion. Ok well, good luck out there and remember its really competitive but so are you!

Nate-Aguilar ,

Using this for all my clients

I have been using this app for the last 4-5 months after deciding to move to a dedicated image compression/optimization software. This app has certainly fit the bill, its lossless compression and lossy compression has been able to not only significantly reduce the image file size, but it continuously maintains quality. I am so grateful for the team that has developed this app and I am now very excited about the recently added file conversion feature. I can definitely see myself using this app into the far future for all my clients as I continue to grow. Thank you very much!

Developer Response ,

Thank you very much! Our team will develop better features to satisfy everyone.

seenondv ,

3 Stars COULD BE 5 Stars

First and formost. This app does exactly what it says and compresses quickly and very well. In fact, I am suprised of the quality after compressing items. The biggest issue I have is that I paid for the UPGRADE to compress without the limitation per day. However, unlike other upgrages I pay for, this one only works on one computer and they must expext you to pay again for other computers tied to your Apple ID. I have tried to restore purchase as I have on both Laptop and Desktop, but it only let me do it for the desktop. It just spins when I try the restore purchase option on the laptop. If this gets fixed I would say it was five stars but as it is, it feels deceptive a bit.

App Privacy

The developer, 潇 罗, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Usage Data
  • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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