Title: Optimizing Image Sizes
Last modified: January 31, 2020

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# Optimizing Image Sizes

 *  Resolved [mollel](https://wordpress.org/support/users/mollel/)
 * (@mollel)
 * [6 years, 4 months ago](https://wordpress.org/support/topic/optimizing-image-sizes/)
 * Hi
 * I have an image gallery that is 8 images wide and I have told FT gallery that
   the Tile Minimum Width is 150px.
 * I have uploaded my images to WordPress and they are all muchh bigger than 150px
   wide and about 500KB each. WordPress magically creates a bunch of smaller images
   of different sizes one of which is 150px x 150px. I have no idea why it does 
   this or how these smaller images ever get used.
 * I have checked site download speed testing with pingdom and it indicates that
   the 500KB images are downloaded.
 * When I inpect the Network traffic in my browser as the page loads it reports 
   that it is downloading the original big 500KB images then it goes back and gets
   the 150x150px images.
 * What is the best way to avoid the big images being downloaded? How does the browser
   know to go back and get the 150pxx150px images?
 * Anyone?
 * Thanks

Viewing 4 replies - 1 through 4 (of 4 total)

 *  [Miha](https://wordpress.org/support/users/mplusb/)
 * (@mplusb)
 * [6 years, 4 months ago](https://wordpress.org/support/topic/optimizing-image-sizes/#post-12396795)
 * Hello [@mollel](https://wordpress.org/support/users/mollel/),
 * Thank you for reaching out to us!
    In order for the thumbnails to be resized 
   to the image size you set up in your gallery you need to either first select 
   the size and then upload the images in your gallery or you need to edit each 
   image (click on the pencil shaped icon that appears when you hover over an image)
   and choose from there the size you want, in your case 150×150 and then save. 
   The size of the thumbnails will be displayed on the image, here is a screenshot:
   [https://gyazo.com/39e8447ee877b2aafe3a2f9efb311f13](https://gyazo.com/39e8447ee877b2aafe3a2f9efb311f13)
 * Also please keep in mind that this size is used only for the images inside the
   thumbnails, the images in the lightbox will be displayed at the original size.
 * Can you please send me your gallery’s url so I can take a look?
 * Thank you,
    Mihaela
 *  Thread Starter [mollel](https://wordpress.org/support/users/mollel/)
 * (@mollel)
 * [6 years, 4 months ago](https://wordpress.org/support/topic/optimizing-image-sizes/#post-12399040)
 * Hi Mihaela
 * Thanks for getting your reply. I am not sure I explained the problem properly.
 * I have a FTG gallery. I have set the image sizes to 150×150. They are 150×150
   as reported in the FTG just like in your link. I can see they are 150×150 if 
   I browse my sites directory.
 * The problem is if I visit my page the big images download then the 150×150 images
   download. I can see this by inspecting network traffic in my browser. For performance
   reasons I only want the 150×150 images to downloads then if someone clicks for
   light box get the big image. Downloading big images is imo un-necessary and time
   consumimng unless using the lightbox.
 * Regards
 * Mollel
 *  [Miha](https://wordpress.org/support/users/mplusb/)
 * (@mplusb)
 * [6 years, 4 months ago](https://wordpress.org/support/topic/optimizing-image-sizes/#post-12405188)
 * Hello [@mollel](https://wordpress.org/support/users/mollel/),
 * Can you please send your gallery’s url so I can take a look?
    I was unable to
   replicate this on my end.
 * Thank you,
    Mihaela
 *  [Miha](https://wordpress.org/support/users/mplusb/)
 * (@mplusb)
 * [6 years, 3 months ago](https://wordpress.org/support/topic/optimizing-image-sizes/#post-12507856)
 * Marking this support thread as resolved due to inactivity. If you have any other
   questions or need further help please open a new thread.

Viewing 4 replies - 1 through 4 (of 4 total)

The topic ‘Optimizing Image Sizes’ is closed to new replies.

 * ![](https://ps.w.org/final-tiles-grid-gallery-lite/assets/icon.svg?rev=3184352)
 * [Image Photo Gallery Final Tiles Grid](https://wordpress.org/plugins/final-tiles-grid-gallery-lite/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/final-tiles-grid-gallery-lite/#faq)
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 * 4 replies
 * 2 participants
 * Last reply from: [Miha](https://wordpress.org/support/users/mplusb/)
 * Last activity: [6 years, 3 months ago](https://wordpress.org/support/topic/optimizing-image-sizes/#post-12507856)
 * Status: resolved