EPUB output

[arijon]

I have several textbooks scanned into relatively high-quality PDF with OCR. They look good on my computer, but they are too big to read on the iPad. So I've been trying to convert the PDFs to ePub while maintaining the OCR. I have read through the Calibre settings and can't figure out how to convert to ePub and keep OCR. Otherwise the PDFs are too big to read on my iPad. Any suggestions?

[Starson17]

Originally Posted by arijon

I have several textbooks scanned into relatively high-quality PDF with OCR. They look good on my computer, but they are too big to read on the iPad. So I've been trying to convert the PDFs to ePub while maintaining the OCR. I have read through the Calibre settings and can't figure out how to convert to ePub and keep OCR. Otherwise the PDFs are too big to read on my iPad. Any suggestions?

Use your pdf reader to save the pdf as text. That should save out the OCR text from the original pdf and drop the images of the text. Then convert the text document. You say you have "high-quality PDF with OCR" and that "They look good on my computer" If you are are looking at the scanned images of text, it will look good, but the OCR text, which normally does not display, may look awful, so this process may not work well.

[arijon]

Originally Posted by Starson17

Use your pdf reader to save the pdf as text. That should save out the OCR text from the original pdf and drop the images of the text. Then convert the text document. You say you have "high-quality PDF with OCR" and that "They look good on my computer" If you are are looking at the scanned images of text, it will look good, but the OCR text, which normally does not display, may look awful, so this process may not work well.

So then what is the best way to make a clean searchable eBook for my computer and iPad? I have a Fujitsu Snapscan 1500 scanner..

[Perkin]

If your scanning a book, use OCR software, save to rtf with formatting preserved, add rtf to calibre, convert to preferred format.

[Starson17]

Originally Posted by arijon

So then what is the best way to make a clean searchable eBook for my computer and iPad? I have a Fujitsu Snapscan 1500 scanner..

I thought it already was OCR'd? (Often when someone says they have OCR'd PDF, what they really mean is they have images of pages with text, and hidden OCR searchable text. The OCR searchable text is usually awful quality.)

Either way, the answer is simple - get OCR text and use that. The problem is to get good quality OCR text. Once you have that, it's simple. ABBYY FineReader is one of the best. Adobe Acrobat is commonly used. Take your pick, scan, correct any OCR errors, add any formatting the OCR missed and convert.

[Metamorphosis]

Originally Posted by Perkin

There's a problem with 7.20, either go back to 7.19 or wait for upated 7.21

I downloaded the new version tonight and it's working now.

[wn0x]

When is the best time to correct spelling errors in an epub file - before importing into Calibre - or correcting the file were it resides in my user profiles Calibre library after initial import?

The goal is to eliminate re-importing the epub file into Calibre every time I find a spelling/formatting error I missed.

Thanks,

Rich

[theducks]

Originally Posted by wn0x

When is the best time to correct spelling errors in an epub file - before importing into Calibre - or correcting the file were it resides in my user profiles Calibre library after initial import?

The goal is to eliminate re-importing the epub file into Calibre every time I find a spelling/formatting error I missed.

Thanks,

Rich

You could edit in place. (backup's highly recommended)
Type T (for Tweak epub), explode. spell check the pieces and repackage.
or
O for open and Right-click select: Edit With Sigil (assumes you have Sigil) when the file manager opens

BTW you can simply replace an existing format. Open the Meta-data editor, Dop the new version of a format onto the formats window to replace the current one.

[wn0x]

Originally Posted by theducks

You could edit in place. (backup's highly recommended)
Type T (for Tweak epub), explode. spell check the pieces and repackage.
or
O for open and Right-click select: Edit With Sigil (assumes you have Sigil) when the file manager opens

BTW you can simply replace an existing format. Open the Meta-data editor, Dop the new version of a format onto the formats window to replace the current one.

Thanks, I'll give that a try. I didn't think that Sigil had spell check, did I miss something? I have been extracting the epub files and using KomPozer (has spell check), which definately adds a few steps.

Rich

[theducks]

Originally Posted by wn0x

Thanks, I'll give that a try. I didn't think that Sigil had spell check, did I miss something? I have been extracting the epub files and using KomPozer (has spell check), which definately adds a few steps.

Rich

No, you are correct, Sigil does not have a Spell check.
I would suggest going the "T" route to handle the file (packaging) operations, and use Komposer from there

[simonbcn]

Hi,
I have converted one test FB2 (with several styles) to EPUB with Calibre.
FB2 screenshot:


The problem is when I convert this to EPUB, with Calibre, the output EPUB is only text. The conversion FB2 to EPUB doesn't convert any style?
Regards.

[kovidgoyal]

it does support styles. you should open a ticket and attach your fb2

[Andrew Brooks]

Hi,
I'm a photographer whos pretty new to ePubs/iBooks, been working on one of my work for the last few weeks and have it looking good on my iPhone and iPab, but now really interested in making it available to my network using the iBooks store. On running it through http://threepress.org/document/epub-validate/ it came up with this error on every sound and video file that is in the book

ERROR: New Worlds.epub/OPS/chapter-1.xhtml(5): unknown element "audio" from namespace "http://www.w3.org/1999/xhtml"

and

ERROR: New Worlds.epub/OPS/chapter-30.xhtml(5): unknown element "video" from namespace "http://www.w3.org/1999/xhtml"

Also is there a file size limit on iBooks that can be uploaded, as mine features embedded video and sound it works out as just over 80meg.

I have put together the iBook using iWork pages.

Any help would be very appreciated,

Thanks for your time,

www.andrewbrooksphotography.com

[kovidgoyal]

Neither audio nor video are officially supported in EPUB at this time. So if you want your EPUB to validate, you can't include them in the HTML

[ramjet1953]

Hi, Guys!

I am experiencing two problems when converting from a PDF file to an ePub.

1. After conversion, I have noticed that any word which contains a 'll' is converted to 'l '.
ie the word 'Hellenistic' would be converted to 'Hel enistic'.

2. When I load the epub file onto my Hanlin V3 the text is always Centre Justified, regardless of how I specify it in the menus. I have checked the .css and it is specified as left justified.

Any suggestions?

Regards,
Roger