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Add header to and slightly tweak 'convert' sheet

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terminalforlife 2021-01-16 17:36:05 +00:00
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# Resize an image to a fixed width and proportional height:
# convert
# Image converter and manipulator
# Resize an image to a fixed width and proportional height.
convert original-image.jpg -resize 100x converted-image.jpg
# Resize an image to a fixed height and proportional width:
# Resize an image to a fixed height and proportional width.
convert original-image.jpg -resize x100 converted-image.jpg
# Resize an image to a fixed width and height:
# Resize an image to a fixed width and height.
convert original-image.jpg -resize 100x100 converted-image.jpg
# Resize an image and simultaneously change its file type:
# Resize an image and simultaneously change its file type.
convert original-image.jpg -resize 100x converted-image.png
# Resize all of the images within a directory, using a for loop:
# Resize all of the images within a directory, using a for loop.
for file in original/image/path/*; do
convert "$file" -resize 150 converted/image/path/"$file"
done
# Make text annotation (text = Flower)
# Make text annotation, which in this example is 'Flower'.
convert flower.jpg -font courier -fill white -pointsize 20 -annotate +50+50 'Flower' flower_annotate1.jpg
# Crop an image
# Crop an image.
convert flower.jpg -crop 128×128+50+50 flower_crop.jpg
# Rotate an image
# Rotate an image.
convert flower.jpg -rotate 45 flower_rotate45.jpg
# Add a border
# Add a border around an image.
convert -border 1x1 -bordercolor "#FFFFFF" image.png new-image.png
# Convert PNG to JPEG (with 70% quality)
# Convert PNG to JPEG, with 70% quality.
convert -quality 70 image.png new_image.jpg
# Apply vignette and grayscale effects to all JPGs in the CWD, using a for loop.
# Apply vignette & grayscale effects to all JPGs in the CWD, using a for loop.
for FILE in *.jpg; { convert -background black -colorspace gray -vignette 200x100 "$FILE" "$FILE"; }
# Convert multiple images to PDF
# Convert and combine multiple images to a single PDF.
convert image1.png image2.jpg image3.bmp output.pdf