ImageMagick: scale JPEG image with a maximum file-size

by

To restrict the resulting image to a maximum file size, you can use the commandline parameter -define jpeg:extent=max_value, like this:

convert original.jpeg -define jpeg:extent=300kb output.jpg
convert original.jpeg -define jpeg:extent=300kb -scale 50% output.jpg
convert original.jpeg -define jpeg:extent=300kb [...other options...] output.jpg

Note, this will not always work to match the exact size you wanted. You may have asked for 40kb output size, where input is 300kb, and get a result of 48kb.

(Update/Clarification: Output file size may be a bit lower or higher than your file requested size.)

More Related Contents:

  1. convert:not authorized `aaaa` @ error/constitute.c/ReadImage/453
  2. ImageMagick no decode delegate
  3. How to convert a .eps file to a high quality 1024×1024 .jpg?
  4. Convert SVG image to PNG with PHP
  5. Trim whitespace using PIL
  6. “Diff” an image using ImageMagick
  7. why font list is empty for imagemagick?
  8. Resize animated GIF file without destroying animation
  9. Convert PDF to JPEG with PHP and ImageMagick
  10. Convert PDF to image with high resolution
  11. rmagick gem install “Can’t find Magick-config”
  12. Detect EXIF Orientation and Rotate Image using ImageMagick
  13. How can I install GraphicsMagick or ImageMagick on AWS Lambda?
  14. Crop or mask an image into a circle
  15. Raw image data from camera like “645 PRO”
  16. ‘^’ is ignored by Python – how to escape ‘^’ character in Popen Windows?
  17. Detect main colors in an image with PHP
  18. Replace transparency in PNG image with white background
  19. Recommendation for compressing JPG files with ImageMagick
  20. convert and mogrify: The correct way to use them in modern versions of ImageMagick
  21. Can I access ImageMagick API with Python?
  22. Converting a PDF to a series of images with Python
  23. Python Wand convert PDF to PNG disable transparent (alpha_channel)
  24. Cloud Functions for Firebase – Converting PDF to image
  25. Ruby: Installing rmagick on Ubuntu
  26. Mac Rmagick won’t install with Xcode 4.2
  27. Change specific RGB color pixels to another color, in image file
  28. Installing ImageMagick extension with php/windows
  29. Python doesn’t find MagickWand Libraries (despite correct location?)
  30. Running ImageMagick on XAMPP 1.8.3 with Windows 7

Leave a Comment