The Economist - images compressed ?

[xav]

Hello,

I want to get a smaller version of the Economist with more compressed, low quality images.

Starting from:
- the original recipe: https://github.com/kovidgoyal/calibr...onomist.recipe

- And the Calibre documentation: https://manual.calibre-ebook.com/news_recipe.html

I tried to change the following parameters in the recipe (line 195 and following):
self.web2disk_options.compress_news_images = True
self.web2disk_options.compress_news_images_auto_si ze = 2
self.web2disk_options.compress_news_images_max_siz e = 5

...But I don't get a smaller Epub as a result (still ~25 Mo) ?
Could anyone please help ? Thanks !

[kovidgoyal]

You set options as fields directly in your BasicNewsRecipe subclass.

[xav]

I tried to add the options under the existing lines from line 195, as follows, but it did not work (I'm not a developer so I only have some basics about coding and I'm a bit lost in the recipe's classes):

def __init__(self, *args, **kwargs):
BasicNewsRecipe.__init__(self, *args, **kwargs)
if self.output_profile.short_name.startswith('kindle' ):
# Reduce image sizes to get file size below amazon's email
# sending threshold
self.web2disk_options.compress_news_images = True
# Code modifié Xav: 2 au lieu de 5
self.web2disk_options.compress_news_images_auto_si ze = 2
# Code modifié Xav ajout de la ligne ci-dessous pour que les images ne dépassent pas 50kb
self.web2disk_options.compress_news_images_max_siz e = 50
self.log.warn('Kindle Output profile being used, reducing image quality to keep file size below amazon email threshold')

[kovidgoyal]

Look at the BasicNewsRecipe class docs, that will tell you the names of the options https://manual.calibre-ebook.com/new...ss_news_images

[Dsharma]

Hey @xav, you're on the right track! Don't worry about not being a developer, learning to navigate code can be tricky. It seems like you've understood the instructions from kovidgoyal quite well. I'd suggest to keep reviewing the BasicNewsRecipe class documentation as recommended. Remember that the options need to be set as fields in your subclass, so they should be at the same level of indentation as the 'def __init__' method. And always remember, trial and error is part of the process.

[greg]

Is it just as effective to configure a default device, so that images get resized? I noticed the Economist download fell from 20MB+ to ~10MB when i set profile to kindle paperwhite

That said, on an older calibre install this news feed was coming in nearer 7MB - not sure what changed (other than that was calibre 5.x)

[xav]

Originally Posted by greg

Is it just as effective to configure a default device, so that images get resized? I noticed the Economist download fell from 20MB+ to ~10MB when i set profile to kindle paperwhite

That said, on an older calibre install this news feed was coming in nearer 7MB - not sure what changed (other than that was calibre 5.x)

Thank you very much for your answers. I tried Greg's hint and changed from Preferences > Conversion > the Output profile to Kindle Paperwhite and got the last The Economist version to 6.3 Mb which is what I wanted.

Thank you very much again !