BIMP for GIMP

gimpBIMP (Batch Image Manipulation Plugin) is a plugin for Gimp that allows you to run a batch process for resizing images.  For this article I'm using Gimp for OS X which has BIMP already installed.


BIMP

Start by opening GIMP.

  1. Go to File > Batch Image Manipulation...
  2. Click the Output folder button and select the destination for your processed images.
  3. Click the Add button in the Manipulation set area, to add any number of the following processes...
    1. Resize
    2. Crop
    3. Flip or Rotate
    4. Color Correction
    5. Sharp or Blur
    6. Add a watermark
    7. Change format and compression
    8. Rename with a pattern
    9. Other GIMP procedure
  4. Click the Add folders button to select the contents of a folder to process.
  5. Click Apply to run the batch process.

 

Example

I've used this to create a web friendly set of images using the following parameters.

  1. Resize 
    1. Set exact size in pixel
    2. Set width only
    3. Width 1024
    4. Interpolation quality - Sinc (Lanczos3)
  2. Sharpen or Blur
    1. -23
  3. Change format and compression
    1. .jpeg
    2. Quality 73
    3. Smoothing 0.20
    4. Optimize
    5. Progressive
    6. Save baseline
    7. Subsampling - 1x1, 1x1, 1x1 (Quality)
    8. DCT algorithm - Float
  4. Rename with a pattern
    1. NewName-##

 

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