The advantage of DjVu is that it is possible to take a high-resolution scan (300–400 DPI), good enough for both on- screen reading and printing, and store it very efficiently. The format is designed to decompress very quickly, even faster than vector-based formats. The contained page images are divided in separate layers (such as multi-color, low-resolution, background layer using lossy compression, and few-colors, high-resolution, tightly compressed foreground layer), each compressed in the best available method. Individual files may contain one or more pages. It includes advanced compressors optimized for low-color images, such as text documents. Djvu Format:ĭjVu is a format specialized for storing scanned documents.
A subset of the DAISY format has been adopted by law in the United States as the National Instructional Material Accessibility Standard (NIMAS), and K-12 textbooks and instructional materials are now required to be provided to students with disabilities.ĭAISY is already aligned with the EPUB technical standard, and is expected to fully converge with its forthcoming EPUB3 revision. DAISY has wide international support with features for multimedia, navigation and synchronization. The Digital Accessible Information SYstem (DAISY) is an XML-based open standard published by the National Information Standards Organization (NISO) and maintained by the DAISY Consortium for people with print disabilities.
Yesno calibre kobo read full#
The indexing is both for keywords and for full text search.ĭAISY – ANSI/NISO Z39.86 Format: Multiple pages and embedded graphics are distributed along with metadata as a single compressed file. cba (ACE)ĬHM format is a proprietary format based on HTML. Also, I got this information from messing around, so my assumptions about certain things might be wrong.cbr (RAR).
Yesno calibre kobo read pdf#
Although, you would need a way to convert the KEPUB location to a EPUB location or a PDF location for example if you wish to continue your reading in the browser from the Kobo and vice-versa. This table could be used to sync the reading progress. Its value should look something like kobo.206.1 (at least for KEPUB files from what I've seen) and it's the id of a in the HTML file. location_value will give you the line you're currently at. The location_source will give you the HTML file in which the bookmark is located (from what I understand EPUB and KEPUB are just archives with a bunch of HTML files). You can use the kobo_reading_state to look up an id for a given book_id and then use this id to check for a bookmark in kobo_bookmark. There are a couple tables prefixed with kobo_, but the ones of interest are kobo_reading_state and kobo_bookmark. The progress information for Kobo is stored in app.db. It references the IDs present in the metadata.db. Seems like the app database is being used to store the Kobo stuff, which you can find in /config/app.db (I use sqliteonline to inspect the content of the database). It happens at this endpoint, while here the values are being read or created.
Yesno calibre kobo read code#
I went through the Kobo code and found out the section, where the reading status is being synced. It could be used to also save the synced kepub information? Or is there a reason for it not being used? I also found out that there is a last_read_positions table present in the metadata.db with the columns: Name
That should be saved somewhere and should be somehow convertible to a percentage (see here for the kepub - epub relation). KEPUB has some additional elements with spans containing ids (which are unique in each chapter, so you need the chapter and id to know where you currently are). I am also currently interested in finding a way to save my reading progress in some way.
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