CarrierWave and resize to a specific width

Question

Using CarrierWave in Rails 3.0 how would you go about making the code resize images that have a width larger than 500 pixels to be 500 pixels wide and adjust the height appropriately - keeping the same initial ratio of width to height.

possible duplicate of [Carrierwave - Resizing images to fixed width](http://stackoverflow.com/questions/8570181/carrierwave-resizing-images-to-fixed-width) — Mohammed Azharuddin Shaikh, Dec 25 '12 at 05:26
its not a duplicate - this is about keeping aspect ratio with one dimension fixed. — sevenseacat, Mar 12 '14 at 08:20

score 50 · Answer 1 · answered Oct 03 '12 at 16:46

50

You Can use:

process :resize_to_limit => [500, nil]

answered Oct 03 '12 at 16:46

William Wong Garay

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That seems to be the proper syntax. – valk Jun 06 '15 at 15:12

score 30 · Answer 2 · answered Jul 20 '12 at 04:02

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process :resize_to_limit => [500, 0]

This will process the image to be no wider than 500px while retaining the proper aspect ratio and allowing any height.

answered Jul 20 '12 at 04:02

Jason Yost

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Using this with carrierwave 0.10.0 and mini_magic 3.6.0 resulted in images scaled down to 1x1 pixels. Using `[500, nil]` as arguments worked for me instead. – efatsi Sep 02 '14 at 15:43

score 4 · Answer 3 · answered Nov 21 '11 at 11:57

I know this is an old question, but I needed something similar.

I wanted images to be resized if they were larger than a given size, but not scaled up if they were smaller.

resize_to_limit(width, height)

Resize the image to fit within the specified dimensions while retaining the original aspect ratio. Will only resize the image if it is larger than the specified dimensions. The resulting image may be shorter or narrower than specified in the smaller dimension but will not be larger than the specified values.

Details: http://carrierwave.rubyforge.org/rdoc/classes/CarrierWave/MiniMagick.html#M000051

score 1 · Answer 4 · answered Jul 16 '12 at 09:08

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If you want to limit the width only, use:

process :resize_to_limit => [500, -1]

and use:

process :resize_to_limit => [-1, 500]

to limit height only.

answered Jul 16 '12 at 09:08

smoothdvd

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it throws `height must be >= 0: -1` – MaicolBen Apr 13 '16 at 15:15

CarrierWave and resize to a specific width

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