An example of using curl and the DocumentAlchemy API to resize an image.

resize-image-example-curl.sh

# Example of using curl and the DocumentAlchemy API to render a 
# scale an image to fixed width while preserving the orignal 
# aspect ratio. 

# This particular example will work with PNG and JPEG files, 
# and convert any input JPEG documents to PNG.

# See <https://documentalchemy.com/> for more information about 
# DocumentAlchemy's document conversion and processing capabilities.

# Assuming:
#
# - `403l1zh3dkbakyb9` is the value of your Document Alchemy API key,
# - `IMAGE.PNG` is the image you want to resize
# - `IMAGE-240.PNG` is the file you want to save the resized image to.
#
# the following command will upload the image to DocumentAlchemy 
# and download the transformed image:

curl -H "Authorization: da.key=403l1zh3dkbakyb9" \
     -X POST --form "document=@IMAGE.PNG" \
     https://documentalchemy.com/api/v1/document/-/rendition/png/transform/S240,0 \
     -o "IMAGE-240.PNG"