Batch image resize api

ExpressJS API to help you resize images from a directory and generate new ones in the resized subfolder.

See the curl examples below and parameters to understand how to use it

Installation and start the server

npm installl
npm start

Execute resizing examples with curl

With directory, where you provide the absolute path where the images are stored

curl -0 -v -X POST localhost:9000/resize \
-H 'Content-Type: application/json; charset=utf-8' \
--data-binary @- << EOF
{
    "width": 1200,
    "quality": 90,
    "numberPrefixOnly": false,
    "imgDir": "/Users/ama/projects/bitcoinrun/bitcoinrun.art/assets/images/runs/27-lausanne/city",
    "outputImgExt": "jpg"
}
EOF

If no image directory (imgDir) is provided, then the images from images folder of the project are used.

In the following example only images starting with a number and dash are resized (numberPrefixOnly is true):

curl -0 -v -X POST localhost:9000/resize \
-H 'Content-Type: application/json; charset=utf-8' \
--data-binary @- << EOF
{
    "width": 1200,
    "quality": 90,
    "numberPrefixOnly": true
}
EOF

Parameters

• width - required desired width list (height is automatically scaled)
• quality - (0 to 100)
• numberPrefixOnly
  • false - default all images in the directory are considered for resizing
  • true - ONLY images with number prefixes are resized (e.g. 4-good-view-zweisimmen-north.jpeg)
• imgDir (optional) - absolute path where the images are stored
  • the resized images are placed in the ${imgDir}/resized sub-directory
  • if this parameter is not provided the program expects that the images are placed in the images directory. Resized images are then generated in images/resized directory
  • tested only in MacOS. Should work fine in Linux OS. For Windows place the images in the input directory as mentioned above

You can use Postman or similar tools to execute the POST commands above if you are more comfortable with these tools

Generate a template post from files

The following command generates a blog post template page (e.g. 2021-07-14-change-me.md) with images from the list in input/image-paths.txt

curl -0 -v -X POST localhost:9000/generate-blogpost