Batch Crop New Thumbnails

Gallery Management: Learn how to batch crop new thumbnails in any gallery all at once

When Artbiz sets up your site, the thumbnail size is set for you in the option settings of NextGen Gallery. Typically they are 100 x 100 pixels. If you ever want to change the size of the thumbnails you may do so under Gallery>Options>Thumbnails.

If you set the new size to be smaller but still square, you will not have to re-crop your thumbs. But, if you change the aspect ratio or choose a larger thumbnail size, you need to re-crop the thumbs so they do not appear blurry.

This is how to batch crop new thumbnails in NextGen Gallery. NOTE: this is not the same as cropping a new thumb as shown on Crop New Thumb.

Although not recommended, you could have different size thumbnails for each gallery. You can also create thumbs that maintain the same aspect ratio as the original image.

Note: A fixed dimension thumb means that if your full size image is landscape shape or portrait shape, then the thumbnails will also be that shape.

Navigate to Gallery> Manage Gallery and open the gallery containing the images you want to bulk crop.

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Easy Peasy!

10 thoughts on “Batch Crop New Thumbnails”

  1. Hi Kim –
    I changed the thumbnail settings by uncheking “fixed size” — the thumbnails are now showing a a square, but are forcing oblongs into a square format, thereby distorting the image. See the first image on this page for an example. http://sgabbott.com/portfolio/fossil-rocks/
    Can you tell me how to change this? Is this an issue with settings in another location?
    Thank you!

    1. When you uncheck that box you’re asking for the thumbs to show maintaining their aspect ratio but they were all square thumbs to being with.

      If you want the square thumbs then check that box again. Otherwise you need to batch crop new thumbs in order to set the aspect ratio.

  2. Hi Kim:

    I’m trying to make the thumbnails on my portfolio galleries fill the space available. I’ve edited the thumbnails in Manage Gallery but it doesn’t change anything. I’ve also created new thumbnails and that hasn’t changed anything.
    I’m using the simpleViewer Gallery so I don’t know if it’s the same as nextGen. Do you know how I can change the thumbnails.
    Thanks, Rex

    1. Hi Rex

      The image size for NextGen Gallery ALBUMS is set in the nggallery.css style sheet which is part of your theme. The developer had not provided any other user access to create or change the size of the album thumbnail. That’s why I wrote this tutorial that by passes using the album all together. Perhaps that could be a viable option for you. Here’s the link http://artbiz.ca/a-new-home-portfolio-page.

  3. btw, I’m using the latest version of WordPress.
    And once I have the thumbnails sorted I want them to continue onward in the Shutter pop up by just clicking on the image, vs. using the arrows beneath the pop up….

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