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Author Topic: Change of file size **COMPLETE**  (Read 118 times)
beekay48
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Posts: 25


Census information Crown Copyright, from www.nationalarchives.gov.uk
Change of file size **COMPLETE**
« on: Friday 28 August 09 19:18 UTC (UK) »
Does anyone know why when I open a jpeg and change it to mirror image the file size is greatly reduced upon saving the file. Will I lose anything from the image if I want to get it printed? Huh
« Last Edit: Sunday 30 August 09 00:09 UTC (UK) by beekay48 » Logged
Kennington(Glanford Brigg)
Richards(Portsmouth)
Haines(Dorset & Portsmouth)
Staples(Tinhead, Wilts & Lincs)
DB10
RootsChat Member
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Posts: 109
Re: Change of file size
« Reply #1 on: Saturday 29 August 09 12:57 UTC (UK) »
Hi Beekay

Every time you amend and save a jpg you will lose some quality as the compression algorithm does its job - its best to save as a lossless format - .png or tif and only save as a jpg for final distribution if there are limits on file size transmission.

Also you need to check the amount of compression your image programme is applying to the jpeg on saving - this can usually be adjusted depending on the programme being used

Hope that helps

DB10
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beekay48
RootsChat Extra
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Posts: 25


Census information Crown Copyright, from www.nationalarchives.gov.uk
Re: Change of file size **COMPLETE**
« Reply #2 on: Sunday 30 August 09 00:08 UTC (UK) »
Thanks DB10 I think I know what to do now. Didn't realise these strange things happened to your pictures. Shocked
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Kennington(Glanford Brigg)
Richards(Portsmouth)
Haines(Dorset & Portsmouth)
Staples(Tinhead, Wilts & Lincs)
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