![]() ![]() I am very impressed with FILEminimizer for its ease of use, batch processing and amazing compression. However I also used a couple of other programs worthy of note, as is the final process sequence that gave me the highest quality image for the least amount of disk space. And in some respects you could use just that program to transform your images. If you have taken the time to look at the links from the section above (Example Images) you will see that I have used FILEminimizer to good effect. ![]() I am only showing six of the nine image results (due to the width of my data file) and I have re-ordered the data to show the most efficient program first. – each image was added at the same time to test batch processing and – each compressed (processed) image was set to be saved in its own folder. Typically I set – output format to the same as the input (.jpg), – same dimensions, – removal of EXIF metadata, – 75-80% quality and – when possible reduced the dpi to 96. FASTSTONE PHOTO RESIZER DPI DOWNLOADShrink-O-Matic – download from here andĪfter installing each program each application was opened and the settings or options were configured to as close as possible to each other.Faststone Photo Resizer – download from here.They were taken using a variety of digital cameras e.g.:- Canon PowerShot A640, NIKON D40 and a Canon EOS-1Ds Mark II and none of the images have been processed in any way prior to the tests. These are thumbnail representations of the test images. ![]() If you imagine a beach photograph with lots of blue sky and sandy beaches it is quite likely that the blue sky will be continuous and therefore easier to compress without loss of quality. I used a range of digital images because compression algorithms will handle some parts of an image quite differently to others. FASTSTONE PHOTO RESIZER DPI FREEI have just finished two days of testing nine different, free or open source, desktop image compression programs and compared the output from nine separate photographs. All this is aimed at helping search engine spiders and image bots to register the image and provide better and relevant information to humans….your visitors. And it is not a difficult thing to do to get the best out of an image – ensure it has a file name that is relevant and meaningful, ensure that it has a proper title and lastly proper ALT text. The aim being to not break something in your website’s html or JavaScript and to provide the best possible ‘data’ to both humans and search engines. The second part of the process is a combination of common sense and good practice. Therefore one part of the image optimisation process is to look at reducing the physical dimensions of an image and the file size while retaining the best possible image quality – or as best as is needed. We measure the dimensions in pixels (PX) and the weight in kilobyes (Kb or Mb) of disk space and sometimes in terms of download time. There are two ways of looking at image optimisation – (a) physical attributes and (b) search engine optimisation.Īlthough we are talking ‘digital’ an image still has dimensions and weight. Of course there will be exceptions if you are a high end photographer but even then you need to think carefully before you dump hundreds of megabytes of imagery on your server. Unnecessarily large images take longer for a browser to render, they take longer for the host to serve up the file, they use up bandwidth, they take up disk space and in most cases smaller is just as good when it comes to quality. There are a variety of reasons – and they all count. file size got me thinking how clients would do this so I did some research into the options available: these are the results. Each case was different but the common denominator of image quality vs. These ranged from simply reducing image sizes out of a camera before uploading, to finding the optimum dimension, file size, and quality of images before uploading to a website. In the last two weeks I have had three separate projects that required some fairly intensive image manipulation. ![]()
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