-- Leo's gemini proxy
-- Connecting to freeshell.de:1965...
-- Connected
-- Sending request
-- Meta line: 20 text/gemini;lang=en-GB
> Perform lossless transformation of JPEG files.
Mirror an image horizontally or vertically:
jpegtran -flip {horizontal|vertical} {path/to/image.jpg} > {path/to/output.jpg}
Rotate an image 90, 180 or 270 degrees clockwise:
jpegtran -rotate {90|180|270} {path/to/image.jpg} > {path/to/output.jpg}
Transpose the image across the upper-left to lower right axis:
jpegtran -transpose {path/to/image.jpg} > {path/to/output.jpg}
Transverse the image across the upper right to lower left axis:
jpegtran -transverse {path/to/image.jpg} > {path/to/output.jpg}
Convert the image to grayscale:
jpegtran -grayscale {path/to/image.jpg} > {path/to/output.jpg}
Crop the image to a rectangular region of width `W` and height `H` from the upper-left corner, saving the output to a specific file:
jpegtran -crop {W}x{H} -outfile {path/to/output.jpg} {path/to/image.jpg}
Crop the image to a rectangular region of width `W` and height `H`, starting at point `X` and `Y` from the upper-left corner:
jpegtran -crop {W}x{H}+{X}+{Y} {path/to/image.jpg} > {path/to/output.jpg}
> Copyright © 2014—present the tldr-pages team and contributors.
> This work is licensed under the Creative Commons Attribution 4.0 International License (CC-BY).
-- Response ended
-- Page fetched on Tue May 21 04:51:41 2024