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Batch Image Resizing Without Losing Quality

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Hi guys,

I need some advice please.

I have ripped thousands of CD's over the years.  But the album booklets I have downloaded from various sources over a long period of time.

So basically I have image files in a multiple folder/subfolder heirarchy.  The size, quality & filetypes vary.

The size of some of these files is causing problems with some music software.  I need to optimise these files and there's too many to do manually.

Thanks for any suggestions.

PS I've always wondered if it's sometimes possible to reduce filesize without compromising quality.  I get the feeling some image creating programs didn't optimise the size upon creation (maybe older ones)?

Haven't had to do this in years. FWIW there's a few older threads on the topic:

FastStone Image Resizer & IrfanView were recommendations that both are still in development (and both 'free' AFAIK)

On Windows 7 I used use Resize.exe see:
(dc download link)

I've also used vlastimil's Picture Resizer which is sort of user-friendly-command-line:

Quality is good, but it might not suit as it saves new renamed files in the same folder

If the details of the above don't work out for you, maybe try MultipleImageResizer.Net. It's pretty flexible about how it names and places the resized files, and offers a choice of algorithms (you'll want Lanczos for the best quality, probably).

If your problem is with music software, I gather you are talking about the cover art embedded in your music files as metadata, rather than booklets and backs, which you would be viewing in a file viewer.  You just need one file per album for embedding, usually named "folder.jpg" by some unfathomable convention, but if you are like me, you need many more for documentation. 

I too have thousands of ripped CDs accumulated over several decades (and thousands more yet to be ripped), along with vast amounts of album art and documentation. Whenever possible, I buy music as CDs and rip them myself, in which case I sometimes scan the cover and some of the other material myself. But much of the artwork and documentation I have comes from a variety of sources like publishers, online stores, etc.

The ripping software I use (EZ CD Audio Converter) automatically obtains metadata from various online databases and will download cover art for most CDs  I rip, but I almost never keep those images, which are usually inferior to what I can obtain on my own.

To create the cover art file to be embedded in the metadata, whether I scan it myself or convert an existing file, I use Paint.NET, a free photo editing program that is extremely easy to use but gives me all the flexibility I need.

Artwork obtained from other sources can sometimes be unreasonably large, particularly if it is meant for printing.  I'm only interested in being able to read the information, so if the files take up too much disk space, I convert them to .jpg if need be and resize them using Irfanview, which has a batch conversion and resizing tool with many advanced options.

For adding, extracting and removing cover art from music files, as well as for nearly all my metadata editing, I use mp3tag.


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