How to Decrease the File Size of a JPEG Image in GIMP. In this video tutorial I show you how to change the file size of a JPEG image in GIMP. Note that you'll be able to do the same with other types of images; one option is to rename their extension to .jpg if you want to follow the format of this video for lossy compression of the image. Follow Me on Twitter: https://twitter.com/raqib_zaman Check Out My Blog: https://therevisionist.org/ (ﾉ◕ヮ◕)ﾉ ├┬┴┬┤ GIMP TUTORIAL PLAYLISTS ├┬┴┬┤ ｡◕‿◕｡
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Changing the Size (Filesize) of a JPEG
You can also modify the filesize of an image when exporting it to a format like JPEG. JPEG is a lossy compression algorithm, meaning that when saving images to the JPEG format, you will sacrifice some image quality to gain a smaller filesize.
As you can see, even at a quality setting of 80, the image is significantly smaller in filesize (77% size reduction), while the image quality is still quite reasonable.
When you’ve finished any image modifications you are doing, and are ready to export, simply invoke the export dialog with:
File → Export…
This will invoke the Export Image dialog:
Export Image Dialog
You can now enter a new name for your file here. If you include the filetype extension (in this case, .jpg), GIMP will automatically try to export in that file format for you. Here I am exporting the image as a JPEG file.
You can also navigate to a new location on your computer through the Places pane, if you need to export the file to a different location. When you are ready to export the image, just hit the Export button.
This will then bring up the Export Image as JPEG dialog, where you can change the quality of the export:
Export as JPG
From this dialog you can now change the quality of the export. If you also have the “Show preview in image window” option checked, the image on the canvas will update to reflect the quality value you input. This will also enable the “File size:” information to tell you what the resulting file size will be. (You may need to move some windows around to view the preview on the canvas in the background).
When you are happy with the results, hit the Export button to export.
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