Calibre is an e-book management software, which provides a "one-stop" e-book solution, which can completely meet people's demand for e-books and even be used to organize their own e-library. Its functions are more diverse. It can be used not only to convert books into formats and organize e-books, but also to add text, pictures and online content (RSS) and convert them into e-books. More importantly, Calibre is free, open source, cross-platform design, and can run under Linux, OS X and Windows operating systems, so it can be called an e-book management artifact!
Because the e-book formats supported by Kindle readers are limited, except mobi and its own formats azw and azw3, other e-book formats (such as the popular epub format on the Internet) are not supported, so it is necessary to convert these formats that Kindle does not support. It is very convenient to use Calibre to convert e-books, and the steps are as follows:
First, add e-books to the stacks.
Download and install Calibre and open it. Click the "Add Book" icon in the upper left corner to add the e-book you want to convert to the library (you can also drag the e-book directly to the library).
Second, choose the conversion mode.
Select one or more e-books, click the right mouse button, and position the mouse at "Convert Books" in the pop-up menu, and a submenu will pop up with options of "Convert One by One" and "Batch Convert". If multiple files are selected, using "convert one by one" needs to set each book separately, such as setting different formats for different e-books; And "batch conversion" means that all e-books * * * use one setting. Please choose according to your own needs.
Calibre supports conversion formats: EPUB, MOBI, AZW3, DOCX, FB2, HTMLZ, LIT, LRF, PDB, PDF, PMIZ, RB, RTF, SNB, TCR, TXTZ, ZIP.
Third, set and modify e-book information.
If you select "Convert one by one", a setup dialog box will pop up for each ebook. You can set the output format, metadata (including the setting of basic information such as title, cover and author), interface appearance (including the setting of content formats such as font size, embedded font and line), intelligent processing, page setting, structure detection and so on. If batch conversion is selected, the metadata cannot be modified in batch and the debugging function cannot be used.
Fourth, view or manage the conversion process.
After all the conversion settings are completed, click OK to start the conversion. In the process of conversion, the words "Task: *" and a rotating chrysanthemum icon will appear in the lower right corner of the main page. Click them to pop up the task list box, where you can view the transition status and perform operations such as stopping or hiding one or more tasks.
5. Get the converted e-book.
When the number after "task" in the lower right corner becomes "0", it means that all conversion tasks have been completed. Right-click the book, and click "Open Directory" in the menu to go to the stored default folder and find the converted e-book. If you don't want to open the e-book directories one by one, you can select multiple e-books, right-click to "Save" in the pop-up menu, click "Save List Directory" in the pop-up submenu, and select a directory in the pop-up dialog box to put it into a folder.
After the e-book is converted, is it like pushing it to Kindle immediately? Calibre has long thought of it for us, and it provides a very convenient function, that is, one-click email push. If you want to learn another trick, please click on this tutorial "Calibre pushes e-books with one-click tutorial".
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* using skills:
Why does the typesetting change after converting azw3 e-books into mobi format with Calibre?
Amazon's official e-books are generally in azw3 format, and the line spacing is designed for good typesetting effect. But after converting to mobi format with Calibre, you will find that the line spacing between paragraphs becomes very narrow and crowded. What is the reason? In the original default setting, Calibre will do some compatibility processing for mobi during the conversion process, and the default is to be compatible with the old mobi format, resulting in the loss of some features of new formats such as azw3.
When Calibre converts e-books, there is a setting item of "mobi Output" and a setting item of "mobi File Type" on the left side of the conversion setting interface, and you can select old, both and new respectively. These three formats respectively represent:
New: Yes, only KF8(mobi8) is included.
Both: including KF8(mobi8) and KF7(mobi7).
Old: only contains KF7(mobi7).
Among them, the new mode will have problems, and the old mode will lose its format. Therefore, both modes can be selected. This mode is to be compatible with old and new devices, so it will contain two files with the same content but different styles. Although this does not guarantee that all formats can be preserved, it can restore some new features of azw format to the greatest extent. However, it should be noted that Amazon's personal document push service may not be supported if new and both modes are selected during the conversion.
If the above methods still fail, there is a better way:
Convert azw3 format to mobi format, and keep the original typesetting format.
Friends have asked Kindle partners a question many times, that is, beautifully typeset azw3 e-books will be converted into mobi format by Calibre and then pushed to Kindle, and the typesetting format will change greatly, such as narrowing the line spacing, losing embedded fonts and so on.
This is because azw3 format is KF8 standard Kindle e-book (which can also be said to be mobi8 format), which supports rich CSS styles and rich typesetting effects. But if you convert to the old mobi7 format, the typesetting effect will disappear. For example, when converting with Calibre, selecting "MOBI file type" in the "MOBI output" option of the conversion panel will convert to mobi7 format.
Is there any way to avoid this situation? The answer is, of course, yes. Here are two ways to be friends.
Method 1: Disassemble into the source file first, and then convert it.
This method is recommended as the first choice. The idea of this method is to disassemble azw3 files into source files with KindleUnpack, and then convert the source files into mobi format with Amazon's official conversion software KindleGen. Because the conversion software KindleGen is officially provided by Amazon, the generated mobi file typesetting is exactly the same as azw3. Here are the specific steps.
1, prepare the software
KindleUnpack download
Kindlegen download
2. Dismantle files
If you haven't used KindleUnpack, please read the article "KindleUnpack: A Sharp Tool to Disassemble Kindle E-book Files" first. Use this software to disassemble the azw3 file into a source file, and find the content.opf file, as shown below:
E-book name /mobi8/OEBPS/content.opf
* Note that "ebook name" refers to the real ebook name of the dismantled ebook.
3. Re-conversion
Finally, use KindleGen to regenerate the mobi file through this content.opf file. The specific steps are as follows: first, decompress the downloaded KindleGen compressed package to get an executable file and put it on the desktop, and then do the following operations:
Windows users can drag and drop the content.opf directly onto the kindlegen.exe file to complete the conversion.
Mac OS X system users can directly drag and drop the content.opf onto the downloaded UI version of KindleGen to complete the conversion.
After the conversion is completed, a file named content.mobi will be generated in the folder where content.opf is located (you can rename it yourself).
* Note that the mobi file converted by KindleGen will contain source files, so it will be larger. If you mind, can you use it? KindleStrip？ This small software can process it and get a simplified mobi file.
Method 2: directly use caliber conversion.
Through the actual measurement, it is found that the e-book in azw3 format is first converted into epub format by Calibre, and then converted into mobi format by Kindlegen. In this way, the converted mobi e-book will keep the original typesetting style of azw3 format. Ok, let's write down the detailed steps.
1, prepare the software
Diameter download: https
2, conversion format
1. Install and open Calibre, and drag the e-book in azw3 format into Calibre;
2. Right-click and expand the menu "Convert Books"->; "One-to-one conversion" (multiple copies can also be selected for batch conversion);
3. Select "MOBI" as the output format in the pop-up window, and change "MOBI file type" to "both" in "MOBI output";
4. Click OK to wait for the conversion to be completed, and the generated mobi file can maintain almost the same typesetting as azw3 format.
* Note: Because Calibre is not the official software, the typesetting of the converted mobi file will be slightly changed.
Well, the mobi files converted by the above two methods don't have to worry about the typography being messed up, isn't it simple? Please leave a message if you encounter any problems in the process. In addition, if you have a better idea, please leave a message to share.