Figure 3.21. Example Image for JPEG Saving
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If you have images that take up a large space on disk, you can reduce that space even without changing the image dimensions. The best image compression is achieved by using the JPG format, but even if the image is already in this format, you can usually still make it take up less space, as the JPG format has an adaptive compression scheme that allows saving in varying levels of compression. The trade-off is that the less space an image takes, the more detail from the original image you lose. You should also be aware that repeated saving in the JPG format causes more and more image degradation.
Since GIMP-2.8, images are loaded and saved as .XCF files. Your JPG image has been loaded as XCF. GIMP offers you to Overwrite image-name.jpg or File → Export As to open the “Export Image” dialog.
Figure 3.22. “Export Image” Dialog
The dialog opens with the file name already typed in the Name box, with the default.png extension. Delete the existing extension and type JPG instead, and GIMP will determine the file type from the file extension. Use the file extension list, red circled in the figure above, to see the types supported by GIMP. The supported extensions change depending on your installed libraries. If GIMP complains, or if “JPEG” is grayed out in the Extensions menu, cancel out of everything and step through the Section 4.7, “Change the Mode”. Once you have done this, click . This opens the “Export Image as JPEG” dialog that contains the quality control.
The “Export Image as JPEG” dialog uses default values that reduce size in memory while retaining good visual quality; this is the safest and quickest thing to do.
Figure 3.23. “Export Image as JPEG” dialog with default quality
Reduce the image Quality to make the image even smaller. Reduced quality degrades the image, so be certain to check “Show preview in image window” to visually gauge the degradation. A Quality setting of 10 produces a very poor quality image that uses very little disk space. The figure below shows a more reasonable image. A quality of 75 produces a reasonable image using much less disk space, which will, in turn, load much faster on a web page. Although the image is somewhat degraded, it is acceptable for the intended purpose.
Figure 3.24. “Export Image as JPEG” dialog with quality 75
Finally, here is a comparison of the same picture with varying degrees of compression:
Figure 3.25. Example for High JPEG Compression
Figure 3.26. Example for Moderate JPEG Compression
Compress your PNG/JPG files by up to 80% and retain full transparency
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Look really carefully. I'll bet that you can't find any differences. That's because Compress PNG/JPG Images Online for free compresses the file up to 80% of its original size without altering the image even a little bit.
Original PNG: 92 KB
Shrunk PNG: 22 KB
Why Compress images?
You don't want oversized PNG files slowing down your website. When you use the Compress PNG/JPG Images Online for free, the only thing that will change is the file size.
Decrease your website load time and increase speed
Images that are smaller in size take less time to load and make web pages display and react faster in web browsers.
Free Up Space on Your PC or Phone
With compressed .png and .jpg files you'll have an additional 80% of space on your phone and computer.
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Share Your Files Quickly and Easily!
Sharing high quality images has never been easier! Compress your PNG files and quickly share them on any platform.
Save time for more importantthings
Our compression method works faster so that you don’t lose precious time.
Frequently Asked Questions
Image Compression Tool
Compress PNG/JPG is an online, free tool which aim is to help you compress your image (jpeg or png). Basically, you have a few solutions to reduce the size of an image but most of the time it will decrease the quality too. Our tool will allow you to keep the quality as is while decreasing the size.
As you add high-quality images to your website to make it more attractive and improve the user experience, the amount of data that must be downloaded to display a web page increases significantly. This causes the web page to display slowly – which is bad for users visiting your site and also negatively affects your site’s ranking in Google and other search engines.
Compress PNG/JPG offers you the best of both worlds – it allows you to display beautiful high-quality images on your website, without slowing down the time it takes to display your web page.
Compress PNG/JPG offers you the best of both worlds – it allows you to display beautiful high-quality images on your website, without slowing down the time it takes to display your web page.
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Even if your images aren’t intended to be used on a website, there are still reasons to reduce their size. If you use smaller image file sizes, you can fit more pictures on your phone or disk drive without needing additional memory. It also makes it easier, and faster, to share your pictures with friends, relatives, and co-workers.