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Old 04-12-2024, 09:07 AM   #1
beeace336
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From HTML to XHTML (or XHTML text?!)
Recently, my e-book distributor told me that the text file in my epub is HTML and must be changed to XHTML to comply with the review requirements of some platforms.

I checked Caliber's conversion information, and it seems that the way it works is to use a plug-in to convert to XHTML and then convert it to HTML before outputting it. What should I do if I don't want the "convert to HTML" step?

In other words, I want the extension of the content text file to be XHTML instead of HTML after converting my book from docx to epub.

I'm not English native speaker, please let me know if there are any misunderstandings.
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Old 04-12-2024, 03:21 PM   #2
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Hello @beeace336

You don't need any plugins to change file extensions.
I've had a look around the Conversion settings screen, but could not find a mention of plugins, or any setting for html<>xhtml settings. Not sure where you saw the requirement for a plugin.

But the fix is simple...
  1. Open the epub in the Calibre Editor,
  2. highlight the files that need changing,
  3. then from the context menu, select "Change the file extensions for the selected files".
  4. Then type xhtml in the box when it pops up.
  5. Save the file if you are happy with the change.

See the image...
Attached Thumbnails
Click image for larger version Name: fileext.jpg Views: 31 Size: 143.7 KB ID: 207532  
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Old 04-12-2024, 05:02 PM   #3
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I didn't like to write because I thought it was too simple, but I thought it was simply the naming, *.html -> *.xhtml. The actual text will be xhtml assuming it passed checks because it's an epub.

Your ebook distributor may be clueless?
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Old 04-12-2024, 05:04 PM   #4
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Sadly while HTML and XHTML do have some differences (ePub2 compared to ePub3), the last publisher that demanded XHTML files was happy with the content when the text files were block renamed from .html to .xhtml in an ePub2 ebook.
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Old 04-12-2024, 06:24 PM   #5
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If the distributor continues to complain after you change the file extensions (↑ ↑ ↑), open a copy of the EPUB with Sigil, click 'Yes' to the following popup and Save the EPUB and send that your e-book distributor.

Click image for larger version Name: Screenshot 2024-04-13 081700.jpg Views: 39 Size: 40.4 KB ID: 207536

BR
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Old 04-12-2024, 11:00 PM   #6
beeace336
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Smile
Thank you so much!
I've already followed your method and succeed!
I upload my e-book again and waiting for reply from my distributor's now.

Quote:
Originally Posted by Karellen View Post
Hello @beeace336

You don't need any plugins to change file extensions.
I've had a look around the Conversion settings screen, but could not find a mention of plugins, or any setting for html<>xhtml settings. Not sure where you saw the requirement for a plugin.

But the fix is simple...
  1. Open the epub in the Calibre Editor,
  2. highlight the files that need changing,
  3. then from the context menu, select "Change the file extensions for the selected files".
  4. Then type xhtml in the box when it pops up.
  5. Save the file if you are happy with the change.

See the image...
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Old 04-13-2024, 07:31 AM   #7
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Quote:
Originally Posted by DNSB View Post
Sadly while HTML and XHTML do have some differences (ePub2 compared to ePub3), the last publisher that demanded XHTML files was happy with the content when the text files were block renamed from .html to .xhtml in an ePub2 ebook.
Yes
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