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PostPosted: 29 Aug 2017, 11:09 
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As has been discussed many times, pictures to be uploaded to UKW as attachments have to be less than a set size limit. At present, it's 256kb. That's much smaller than most cameras or phones will produce, where images can easily be several megabytes.

Reducing file size can sometimes be a frustrating experience as you go through successive changes to image size, trying to find the point at which the file is small enough.

I've used IrfanView for many years, as a programme for viewing, editing and arranging images. It's a deservedly popular bit of free software with many millions of downloads. (Donations are welcomed.)

I recently learned that if you use the 32-bit version and install the plug-ins pack, you can choose a target file size to which your images should be shrunk. It seems to do a very good job of retaining as much image quality as possible while getting the file small enough to be acceptable.

There is a powerful batch mode which lets you select a group of photos, reduce their file size and rename them, all in one go.

The hompage at http://www.irfanview.com/ has links to download sites for the various versions and the plugins - the one that does the clever file resizing is snappily named "RIOT" meaning "Radical Image Optimization Tool".

The software is available for all versions of Windows but not for other operating systems.

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PostPosted: 29 Aug 2017, 15:02 
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Just for a bit of balance [no idea which, if either, is better] I use and like 'pixresizer', also easy to use and capable of doing batch jobs.
https://pixresizer.en.softonic.com/?ex=DSK-173.3

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PostPosted: 01 Sep 2017, 23:36 
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The home page for David De Groot's PixResizer
- http://bluefive.pairsite.com/pixresizer.htm

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PostPosted: 02 Sep 2017, 01:41 
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I've just had a play with pixresizer and found it very simple and quick to use. Just one point, I could only find the target size in pixels (rather than kb) but it's no biggy. I messed around with some different sizes and found that 1000 pixels typically converted all my snaps to close to or below 256k

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PostPosted: 02 Sep 2017, 23:51 
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If you re size your photos to about 800px on the longest side, they should generally output to well under 256Kb, usually around 100Kb.

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