ServBay Image Processing Tool Usage Documentation

ServBay comes pre-installed with several powerful command-line image processing tools that can help you efficiently process and optimize image files. This document introduces the common image processing tools included with ServBay and provides some practical image processing tips.

Table of Contents

• Table of Contents
• Common Image Processing Tools
  • ImageMagick
  • cwebp
  • jpegtran
  • djpeg
  • cjpeg
  • img2webp
• Image Processing Tips
  • Batch Resize Images
  • Batch Convert Image Formats
  • Add Watermarks
  • Optimize Image Quality
• Conclusion

Common Image Processing Tools

ImageMagick

ImageMagick is a powerful suite of image manipulation tools and libraries that support multiple image formats. It offers features for creating, editing, and composing images.

Installation and Configuration

ServBay comes with ImageMagick pre-installed, so no additional installation is required.

Basic Usage

• Convert image formats

  magick convert input.jpg output.png

• Resize images

  magick convert input.jpg -resize 300x300 output.jpg

• Add watermarks

  magick convert input.jpg -gravity southeast -draw "text 10,10 'ServBay'" output.jpg

cwebp

cwebp is a command-line tool for converting images to WebP format. WebP is a modern image format that provides better compression and quality.

Installation and Configuration

ServBay comes with cwebp pre-installed, so no additional installation is required.

Basic Usage

• Convert JPEG images to WebP format

  cwebp input.jpg -o output.webp

• Convert PNG images to WebP format

  cwebp input.png -o output.webp

• Set compression quality

  cwebp -q 80 input.jpg -o output.webp

jpegtran

jpegtran is a lossless JPEG transformation tool used for rotating, flipping, and transposing JPEG images.

Installation and Configuration

ServBay comes with jpegtran pre-installed, so no additional installation is required.

Basic Usage

• Rotate JPEG images

  jpegtran -rotate 90 input.jpg > output.jpg

• Horizontally flip JPEG images

  jpegtran -flip horizontal input.jpg > output.jpg

djpeg

djpeg is a tool for decompressing JPEG files into PPM, PGM, BMP, or Targa formats.

Installation and Configuration

ServBay comes with djpeg pre-installed, so no additional installation is required.

Basic Usage

• Decompress JPEG to PPM format

  djpeg input.jpg > output.ppm

cjpeg

cjpeg is a tool for compressing PPM, PGM, BMP, or Targa format images into JPEG files.

Installation and Configuration

ServBay comes with cjpeg pre-installed, so no additional installation is required.

Basic Usage

• Compress PPM to JPEG format

  cjpeg input.ppm > output.jpg

img2webp

img2webp is a tool for combining multiple images into a single WebP file, commonly used for creating animated WebP.

Installation and Configuration

ServBay comes with img2webp pre-installed, so no additional installation is required.

Basic Usage

• Combine multiple images into an animated WebP

  img2webp -o output.webp frame1.png frame2.png frame3.png

Image Processing Tips

Batch Resize Images

You can use ImageMagick to easily batch resize images. For example, resize all JPEG images in the current directory to 300x300 pixels:

for file in *.jpg; do magick convert "$file" -resize 300x300 "$file"; done

Batch Convert Image Formats

You can use cwebp to batch convert images to WebP format. For instance, convert all images that start with servbay in the current directory to WebP format, and set the compression quality to 45:

for file in servbay*; do cwebp -q 45 "$file" -o "${file%.*}.webp"; done

Add Watermarks

You can use ImageMagick to add watermarks. For example, add a text watermark in the lower right corner:

magick convert input.jpg -gravity southeast -draw "text 10,10 'ServBay'" output.jpg

Optimize Image Quality

You can use jpegtran to optimize the quality and file size of JPEG images.

Optimize JPEG Images

jpegtran -optimize -progressive input.jpg > output.jpg

Conclusion

ServBay includes several powerful command-line image processing tools that can help you efficiently process and optimize image files. By following this document, you can learn how to use these tools for image processing and pick up some practical tips.