Replace 300+ files in AZW3

[kbronct]

Hi,

I'm trying to replace the JPG files inside big AZW3 (like 60-80 MB each) in order to make them thinner.

I "unpacked" the AZW3 and got the JPGs. I use Irfanview to reduce resolution and 8 bits instead of 24.

PROBLEM: Later, into the editor, I realized the file names inside the AZW are like 00001.jpg and so. Totally different naming as the ones I got.

Is there a way to export ALL the images? (exporting seems to keep the correct name). Trimming/Reescaling every image from the editor would be like a torture.

I can do it with EPUB files. Will I have to convert AZW3 to EPUB, replace JPGs, and the convert again to AZW3?

Can someone help me here with a better way?

Any help will be greatly welcomed!

[kovidgoyal]

For command line operation

calibre-debug --explode-book

for GUI operation use the unpack book tool (Preferences->Toolbars)

[kbronct]

Originally Posted by kovidgoyal

For command line operation

calibre-debug --explode-book

for GUI operation use the unpack book tool (Preferences->Toolbars)

Hi Kovid,

Thank you very much for your (very prompt) support.

Calibre is a great software and the people behind it make it even better.

I've tried GUI and seems working fine.
I'll try command line operation in case some automation can be achieved.

[kbronct]

Hi again,

calibre-debug --explode-book

Is there any way to select an specific folder to place the files?
(instead of C:\Users\XXXX\AppData\Local\Temp\Temp\calibre_dye8 ow\0j7h77_tweak_1\, for example).

Thanks

[kovidgoyal]

You can set the temp dir calibre uses via an environment variable, but not the actual folder itself within that temp dir. http://manual.calibre-ebook.com/cust...ment-variables

[kbronct]

Hi Kovid,

I knew about the environment variables and I'm using them to use a RAM disk instead of windows TEMP folder.

Anyway, thanks a lot.