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Old 03-12-2011, 05:38 PM   #1
jesuslatschen
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Conversion from CHM takes aaaaaaaaaaaages

Good evening,

I am trying to convert some 20+ CHM ebooks to mobi-files. Problem is, the conversion takes ages, some books with 100 pages more than an hour. Converting PDFs of the same size takes two minutes. And a conversion with other tools from CHM to HTML maybe less than 30 seconds.

How could I speed up the conversion to HTML process? I have found a html converter, but it splits it into several files which calibre can't read
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Old 03-12-2011, 07:26 PM   #2
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There isn't anything you can do. Just wait for it to complete.
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Old 03-12-2011, 07:33 PM   #3
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Hi,

hm, ok, that's less than desirable. Some books don't work properly, so you need to convert with different settings and so on, I'll spend a week or so converting them. Is there another way, with a 3rd-party-converter or something?
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Old 03-13-2011, 09:19 AM   #4
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You mentioned another tool that does CHM->HTML. Use that, import the HTML and convert from that.
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Old 03-13-2011, 09:44 AM   #5
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Quote:
Originally Posted by jesuslatschen View Post
How could I speed up the conversion to HTML process? I have found a html converter, but it splits it into several files which calibre can't read
As long as there is a TOC or index page from the conversion then calibre should handle the multi-part html without a problem. Just drag the TOC or index to calibre and calibre will grab up the other pages/images in the directory and package them as a zip file that calibre can convert to any other format.
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Old 03-13-2011, 05:12 PM   #6
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Tried so, but to no avail. That's why I was asking here.

Besides that, it seems like the problem lies in the conversion from html to whatever format. As CHM is also just compiled html, this seems reasonable.
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Old 03-13-2011, 09:45 PM   #7
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Quote:
Originally Posted by jesuslatschen View Post
Besides that, it seems like the problem lies in the conversion from html to whatever format. As CHM is also just compiled html, this seems reasonable.
The problem with the conversion taking ages to complete is not a CHM problem. Long conversion times often exist for any html based (ePub, html, Mobi, Lit) format that started its life as a MS Word file and was saved without the filter option. These files typically have 10s of thousands of lines of embedded CSS that needs to be sorted through and applied. Add to this the complexity of many documents and I have seen ePub conversions take up to 6 hours. Fortunately this is the exception and not the rule.
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Old 03-14-2011, 11:43 AM   #8
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Start the conversions right before you go to bed or work.

Then you won't have to wait and they will be done when you come back to the computer.

Don't add to your angst, walk away from it.

Happy Monday
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