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calibre User Manual, Release 2.57.1

# first_free - First available integer larger than 0

# next_free - First available integer larger than the smallest existing number

# last_free - First available integer smaller than the largest existing number

Return largest existing + 1 if no free number is found

# const - Assign the number 1 always

# no_change - Do not change the series index

# a number - Assign that number always. The number is not in quotes. Note that

0.0 can be used here.

# Examples:

# series_index_auto_increment = 'next'

# series_index_auto_increment = 'next_free'

# series_index_auto_increment = 16.5

# Set the use_series_auto_increment_tweak_when_importing tweak to True to

# use the above values when importing/adding books. If this tweak is set to

# False (the default) then the series number will be set to 1 if it is not

# explicitly set during the import. If set to True, then the

# series index will be set according to the series_index_auto_increment setting.

# Note that the use_series_auto_increment_tweak_when_importing tweak is used

# only when a value is not provided during import. If the importing regular

# expression produces a value for series_index, or if you are reading metadata

# from books and the import plugin produces a value, than that value will

# be used irrespective of the setting of the tweak.

series_index_auto_increment = 'next'

use_series_auto_increment_tweak_when_importing = False

#: Add separator after completing an author name

# Should the completion separator be append

# to the end of the completed text to

# automatically begin a new completion operation

# for authors.

# Can be either True or False

authors_completer_append_separator = False

#: Author sort name algorithm

# The algorithm used to copy author to author_sort

# Possible values are:

invert: use "fn ln" -> "ln, fn"

copy

: copy author to author_sort without modification

comma : use 'copy' if there is a ',' in the name, otherwise use 'invert'

nocomma : "fn ln" -> "ln fn" (without the comma)

# When this tweak is changed, the author_sort values stored with each author

# must be recomputed by right-clicking on an author in the left-hand tags pane,

# selecting 'manage authors', and pressing 'Recalculate all author sort values'.

# The author name suffixes are words that are ignored when they occur at the

# end of an author name. The case of the suffix is ignored and trailing

# periods are automatically handled. The same is true for prefixes.

# The author name copy words are a set of words which if they occur in an

# author name cause the automatically generated author sort string to be

# identical to the author name. This means that the sort for a string like Acme

# Inc. will be Acme Inc. instead of Inc., Acme

author_sort_copy_method = 'comma'

author_name_suffixes = ('Jr', 'Sr', 'Inc', 'Ph.D', , 'Phd',

'MD', 'M.D', 'I', 'II', 'III', 'IV',

'Junior', 'Senior')

author_name_prefixes = ('Mr', 'Mrs', 'Ms', 'Dr', 'Prof')

author_name_copywords = ('Corporation', 'Company', , 'Co.', , 'Agency', , 'Council',

'Committee', 'Inc.', 'Institute', 'Society', 'Club', 'Team')

1.10. Customizing calibre

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calibre User Manual, Release 2.57.1

#: Splitting multiple author names

# By default, calibre splits a string containing multiple author names on

# ampersands and the words "and" and "with". You can customize the splitting

# by changing the regular expression below. Strings are split on whatever the

# specified regular expression matches, in addition to ampersands.

# Default: r'(?i),?\s+(and|with)\s+'

authors_split_regex = r'(?i),?\s+(and|with)\s+'

#: Use author sort in Tag Browser

# Set which author field to display in the tags pane (the list of authors,

# series, publishers etc on the left hand side). The choices are author and

# author_sort. This tweak affects only what is displayed under the authors

# category in the tags pane and content server. Please note that if you set this

# to author_sort, it is very possible to see duplicate names in the list because

# although it is guaranteed that author names are unique, there is no such

# guarantee for author_sort values. Showing duplicates won't break anything, but

# it could lead to some confusion. When using 'author_sort', the tooltip will

# show the author's name.

# Examples:

categories_use_field_for_author_name = 'author'

categories_use_field_for_author_name = 'author_sort'

categories_use_field_for_author_name = 'author'

#: Control partitioning of Tag Browser

# When partitioning the tags browser, the format of the subcategory label is

# controlled by a template: categories_collapsed_name_template if sorting by

# name, categories_collapsed_rating_template if sorting by average rating, and

# categories_collapsed_popularity_template if sorting by popularity. There are

# two variables available to the template: first and last. The variable 'first'

# is the initial item in the subcategory, and the variable 'last' is the final

# item in the subcategory. Both variables are 'objects'; they each have multiple

# values that are obtained by using a suffix. For example, first.name for an

# author category will be the name of the author. The sub-values available are:

name: the printable name of the item

count: the number of books that references this item

avg_rating: the average rating of all the books referencing this item

sort: the sort value. For authors, this is the author_sort for that author

category: the category (e.g., authors, series) that the item is in.

# Note that the "r'" in front of the { is necessary if there are backslashes

# (\ characters) in the template. It doesn't hurt anything to leave it there

# even if there aren't any backslashes.

categories_collapsed_name_template = r'{first.sort:shorten(4,,0)} - - {last.sort:shorten(4,,0)}'

categories_collapsed_rating_template = r'{first.avg_rating:4.2f:ifempty(0)} - - {last.avg_rating:4.2f:ifempty(0)}'

categories_collapsed_popularity_template = r'{first.count:d} - {last.count:d}'

#: Control order of categories in the tag browser

# Change the following dict to change the order that categories are displayed in

# the tag browser. Items are named using their lookup name, and will be sorted

# using the number supplied. The lookup name '

' stands for all names that

# otherwise do not appear. Two names with the same value will be sorted

# using the default order; the one used when the dict is empty.

# Example: tag_browser_category_order = {'series':1, 'tags':2, '

':3}

# resulting in the order series, tags, then everything else in default order.

tag_browser_category_order = {'

':1}

#: Specify columns to sort the booklist by on startup

# Provide a set of columns to be sorted on when calibre starts

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calibre User Manual, Release 2.57.1

The argument is None if saved sort history is to be used

otherwise it is a list of column,order pairs. Column is the

lookup/search name, found using the tooltip for the column

Order is 0 for ascending, 1 for descending

# For example, set it to [('authors',0),('title',0)] to sort by

# title within authors.

sort_columns_at_startup = None

#: Control how dates are displayed

# Format to be used for publication date and the timestamp (date).

A string controlling how the publication date is displayed in the GUI

the day as number without a leading zero (1 to 31)

the day as number with a leading zero (01 to 31)

ddd

the abbreviated localized day name (e.g. 'Mon' to 'Sun').

dddd

the long localized day name (e.g. 'Monday' to 'Sunday').

the month as number without a leading zero (1-12)

the month as number with a leading zero (01-12)

MMM

the abbreviated localized month name (e.g. 'Jan' to 'Dec').

MMMM

the long localized month name (e.g. 'January' to 'December').

the year as two digit number (00-99)

yyyy

the year as four digit number

the hours without a leading 0 (0 to 11 or 0 to 23, depending on am/pm) '

the hours with a leading 0 (00 to 11 or 00 to 23, depending on am/pm) '

the minutes without a leading 0 (0 to 59) '

the minutes with a leading 0 (00 to 59) '

the seconds without a leading 0 (0 to 59) '

the seconds with a leading 0 (00 to 59) '

use a 12-hour clock instead of a 24-hour clock, with "ap"

replaced by the localized string for am or pm '

use a 12-hour clock instead of a 24-hour clock, with "AP"

replaced by the localized string for AM or PM '

iso

the date with time and timezone. Must be the only format present

For example, given the date of 9 Jan 2010, the following formats show

MMM yyyy ==> Jan 2010

yyyy ==> 2010

dd MMM yyyy ==> 09 Jan 2010

MM/yyyy ==> 01/2010

d/M/yy ==> 9/1/10

yy ==> 10

# publication default if not set: MMM yyyy

# timestamp default if not set: dd MMM yyyy

# last_modified_display_format if not set: dd MMM yyyy

gui_pubdate_display_format = 'MMM yyyy'

gui_timestamp_display_format = 'dd MMM M yyyy'

gui_last_modified_display_format = 'dd MMM M yyyy'

#: Control sorting of titles and series in the library display

# Control title and series sorting in the library view. If set to

# 'library_order', the title sort field will be used instead of the title.

# Unless you have manually edited the title sort field, leading articles such as

# The and A will be ignored. If set to 'strictly_alphabetic', the titles will be

# sorted as-is (sort by title instead of title sort). For example, with

# library_order, The Client will sort under 'C'. With strictly_alphabetic, the

# book will sort under 'T'.

# This flag affects Calibre's library display. It has no effect on devices. In

# addition, titles for books added before changing the flag will retain their

# order until the title is edited. Double-clicking on a title and hitting return

# without changing anything is sufficient to change the sort.

title_series_sorting = 'library_order'

#: Control formatting of title and series when used in templates

# Control how title and series names are formatted when saving to disk/sending

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calibre User Manual, Release 2.57.1

# to device. The behavior depends on the field being processed. If processing

# title, then if this tweak is set to 'library_order', the title will be

# replaced with title_sort. If it is set to 'strictly_alphabetic', then the

# title will not be changed. If processing series, then if set to

# 'library_order', articles such as 'The' and 'An' will be moved to the end. If

# set to 'strictly_alphabetic', the series will be sent without change.

# For example, if the tweak is set to library_order, "The Lord of the Rings"

# will become "Lord of the Rings, The". If the tweak is set to

# strictly_alphabetic, it would remain "The Lord of the Rings". Note that the

# formatter function raw_field will return the base value for title and

# series regardless of the setting of this tweak.

save_template_title_series_sorting = 'library_order'

#: Set the list of words considered to be "articles" for sort strings

# Set the list of words that are to be considered 'articles' when computing the

# title sort strings. The articles differ by language. By default, calibre uses

# a combination of articles from English and whatever language the calibre user

# interface is set to. In addition, in some contexts where the book language is

# available, the language of the book is used. You can change the list of

# articles for a given language or add a new language by editing

# per_language_title_sort_articles. To tell calibre to use a language other

# than the user interface language, set, default_language_for_title_sort. For

# example, to use German, set it to 'deu'. A value of None means the user

# interface language is used. The setting title_sort_articles is ignored

# (present only for legacy reasons).

per_language_title_sort_articles = {

# English

'eng'

: (r'A\s+', , r'The\s+', r'An\s+'),

# Esperanto

'epo': (r'La\s+', r"L'", 'L\xb4'),

# Spanish

'spa'

: (r'El\s+', r'La\s+', , r'Lo\s+', , r'Los\s+', r'Las\s+', r'Un\s+',

r'Una\s+', r'Unos\s+', r'Unas\s+'),

# French

'fra'

: (r'Le\s+', r'La\s+', , r"L'", u'L´', , u'L’', r'Les\s+', r'Un\s+', r'Une\s+',

r'Des\s+', r'De\s+La\s+', r'De\s+', r"D'", u'D´', u'L’'),

# Italian

'ita': ('Lo\\s+', 'Il\\s+', "L'", 'L\xb4', 'La\\s+', 'Gli\\s+',

'I\\s+', 'Le\\s+', 'Uno\\s+', 'Un\\s+', 'Una\\s+', "Un'",

'Un\xb4', 'Dei\\s+', 'Degli\\s+', 'Delle\\s+', 'Del\\s+',

'Della\\s+', 'Dello\\s+', "Dell'", 'Dell\xb4'),

# Portuguese

'por'

: (r'A\s+', , r'O\s+', , r'Os\s+', r'As\s+', , r'Um\s+', , r'Uns\s+',

r'Uma\s+', r'Umas\s+', ),

# Romanian

'ron'

: (r'Un\s+', r'O\s+', r'Ni¸ste\s+', ),

# German

'deu'

: (r'Der\s+', r'Die\s+', r'Das\s+', , r'Den\s+', r'Ein\s+',

r'Eine\s+', r'Einen\s+', r'Dem\s+', r'Des\s+', r'Einem\s+',

r'Eines\s+'),

# Dutch

'nld'

: (r'De\s+', r'Het\s+', , r'Een\s+', r"'n\s+", , r"'s\s+", r'Ene\s+',

r'Ener\s+', r'Enes\s+', r'Den\s+', r'Der\s+', r'Des\s+',

r"'t\s+"),

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calibre User Manual, Release 2.57.1

# Swedish

'swe'

: (r'En\s+', r'Ett\s+', , r'Det\s+', r'Den\s+', r'De\s+', ),

# Turkish

'tur'

: (r'Bir\s+', ),

# Afrikaans

'afr'

: (r"'n\s+", r'Die\s+', ),

# Greek

'ell'

: (r'O\s+', , r'I\s+', , r'To\s+', r'Ta\s+', , r'Tus\s+', r'Tis\s+',

r"'Enas\s+", r"'Mia\s+", r"'Ena\s+", r"'Enan\s+", ),

# Hungarian

'hun'

: (r'A\s+', , 'Az\s+', , 'Egy\s+',),

}

default_language_for_title_sort = None

title_sort_articles=r'^(A|The|An)\s+'

#: Specify a folder calibre should connect to at startup

# Specify a folder that calibre should connect to at startup using

# connect_to_folder. This must be a full path to the folder. If the folder does

# not exist when calibre starts, it is ignored. If there are '\' characters in

# the path (such as in Windows paths), you must double them.

# Examples:

auto_connect_to_folder = 'C:\\Users\\someone\\Desktop\\testlib'

auto_connect_to_folder = '/home/dropbox/My Dropbox/someone/library'

auto_connect_to_folder = ''

#: Specify renaming rules for SONY collections

# Specify renaming rules for sony collections. This tweak is only applicable if

# metadata management is set to automatic. Collections on Sonys are named

# depending upon whether the field is standard or custom. A collection derived

# from a standard field is named for the value in that field. For example, if

# the standard 'series' column contains the value 'Darkover', then the

# collection name is 'Darkover'. A collection derived from a custom field will

# have the name of the field added to the value. For example, if a custom series

# column named 'My Series' contains the name 'Darkover', then the collection

# will by default be named 'Darkover (My Series)'. For purposes of this

# documentation, 'Darkover' is called the value and 'My Series' is called the

# category. If two books have fields that generate the same collection name,

# then both books will be in that collection.

# This set of tweaks lets you specify for a standard or custom field how

# the collections are to be named. You can use it to add a description to a

# standard field, for example 'Foo (Tag)' instead of the 'Foo'. You can also use

# it to force multiple fields to end up in the same collection. For example, you

# could force the values in 'series', '#my_series_1', and '#my_series_2' to

# appear in collections named 'some_value (Series)', thereby merging all of the

# fields into one set of collections.

# There are two related tweaks. The first determines the category name to use

# for a metadata field.

The second is a template, used to determines how the

# value and category are combined to create the collection name.

# The syntax of the first tweak, sony_collection_renaming_rules, is:

# {'field_lookup_name':'category_name_to_use', 'lookup_name':'name', ...}

# The second tweak, sony_collection_name_template, is a template. It uses the

# same template language as plugboards and save templates. This tweak controls

# how the value and category are combined together to make the collection name.

# The only two fields available are {category} and {value}. The {value} field is

# never empty. The {category} field can be empty. The default is to put the

# value first, then the category enclosed in parentheses, it isn't empty:

# '{value} {category:|(|)}'

# Examples: The first three examples assume that the second tweak

1.10. Customizing calibre

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calibre User Manual, Release 2.57.1

# has not been changed.

# 1: I want three series columns to be merged into one set of collections. The

# column lookup names are 'series', '#series_1' and '#series_2'. I want nothing

# in the parenthesis. The value to use in the tweak value would be:

sony_collection_renaming_rules={'series':'', '#series_1':'', '#series_2':''}

# 2: I want the word '(Series)' to appear on collections made from series, and

# the word '(Tag)' to appear on collections made from tags. Use:

sony_collection_renaming_rules={'series':'Series', 'tags':'Tag'}

# 3: I want 'series' and '#myseries' to be merged, and for the collection name

# to have '(Series)' appended. The renaming rule is:

sony_collection_renaming_rules={'series':'Series', '#myseries':'Series'}

# 4: Same as example 2, but instead of having the category name in parentheses

# and appended to the value, I want it prepended and separated by a colon, such

# as in Series: Darkover. I must change the template used to format the category name

# The resulting two tweaks are:

sony_collection_renaming_rules={'series':'Series', 'tags':'Tag'}

sony_collection_name_template='{category:||: }{value}'

sony_collection_renaming_rules={}

sony_collection_name_template='{value}{category:| (|)}'

#: Specify how SONY collections are sorted

# Specify how sony collections are sorted. This tweak is only applicable if

# metadata management is set to automatic. You can indicate which metadata is to

# be used to sort on a collection-by-collection basis. The format of the tweak

# is a list of metadata fields from which collections are made, followed by the

# name of the metadata field containing the sort value.

# Example: The following indicates that collections built from pubdate and tags

# are to be sorted by the value in the custom column '#mydate', that collections

# built from 'series' are to be sorted by 'series_index', and that all other

# collections are to be sorted by title. If a collection metadata field is not

# named, then if it is a series- based collection it is sorted by series order,

# otherwise it is sorted by title order.

# [(['pubdate', 'tags'],'#mydate'), (['series'],'series_index'), (['

'], 'title')]

# Note that the bracketing and parentheses are required. The syntax is

# [ ( [list of fields], sort field ) , ( [ list of fields ] , sort field ) ]

# Default: empty (no rules), so no collection attributes are named.

sony_collection_sorting_rules = []

#: Control how tags are applied when copying books to another library

# Set this to True to ensure that tags in 'Tags to add when adding

# a book' are added when copying books to another library

add_new_book_tags_when_importing_books = False

#: Set the maximum number of tags to show per book in the content server

max_content_server_tags_shown=5

#: Set custom metadata fields that the content server will or will not display.

# content_server_will_display is a list of custom fields to be displayed.

# content_server_wont_display is a list of custom fields not to be displayed.

# wont_display has priority over will_display.

# The special value '

' means all custom fields. The value [] means no entries.

# Defaults:

content_server_will_display = ['

content_server_wont_display = []

# Examples:

# To display only the custom fields #mytags and #genre:

content_server_will_display = ['#mytags', '#genre']

content_server_wont_display = []

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calibre User Manual, Release 2.57.1

# To display all fields except #mycomments:

content_server_will_display = ['

content_server_wont_display['#mycomments']

content_server_will_display = ['

content_server_wont_display = []

#: Set the maximum number of sort 'levels'

# Set the maximum number of sort 'levels' that calibre will use to resort the

# library after certain operations such as searches or device insertion. Each

# sort level adds a performance penalty. If the database is large (thousands of

# books) the penalty might be noticeable. If you are not concerned about multi-

# level sorts, and if you are seeing a slowdown, reduce the value of this tweak.

maximum_resort_levels = 5

#: Choose whether dates are sorted using visible fields

# Date values contain both a date and a time. When sorted, all the fields are

# used, regardless of what is displayed. Set this tweak to True to use only

# the fields that are being displayed.

sort_dates_using_visible_fields = False

#: Fuzz value for trimming covers

# The value used for the fuzz distance when trimming a cover.

# Colors within this distance are considered equal.

# The distance is in absolute intensity units.

cover_trim_fuzz_value = 10

#: Control behavior of the book list

# You can control the behavior of doubleclicks on the books list.

# Choices: open_viewer, do_nothing,

# edit_cell, edit_metadata. Selecting anything other than open_viewer has the

# side effect of disabling editing a field using a single click.

# Default: open_viewer.

# Example: doubleclick_on_library_view = 'do_nothing'

# You can also control whether the book list scrolls horizontal per column or

# per pixel. Default is per column.

doubleclick_on_library_view = 'open_viewer'

horizontal_scrolling_per_column = True

#: Language to use when sorting.

# Setting this tweak will force sorting to use the

# collating order for the specified language. This might be useful if you run

# calibre in English but want sorting to work in the language where you live.

# Set the tweak to the desired ISO 639-1 language code, in lower case.

# You can find the list of supported locales at

# http://publib.boulder.ibm.com/infocenter/iseries/v5r3/topic/nls/rbagsicusortsequencetables.htm

# Default: locale_for_sorting = '' -- use the language calibre displays in

# Example: locale_for_sorting = 'fr' -- sort using French rules.

# Example: locale_for_sorting = 'nb' -- sort using Norwegian rules.

locale_for_sorting =

#: Number of columns for custom metadata in the edit metadata dialog

# Set whether to use one or two columns for custom metadata when editing

# metadata

one book at a time. If True, then the fields are laid out using two

# columns. If False, one column is used.

metadata_single_use_2_cols_for_custom_fields = True

#: Order of custom column(s) in edit metadata

# Controls the order that custom columns are listed in edit metadata single

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# and bulk. The columns listed in the tweak are displayed first and in the

# order provided. Any columns not listed are dislayed after the listed ones,

# in alphabetical order. Do note that this tweak does not change the size of

# the edit widgets. Putting comments widgets in this list may result in some

# odd widget spacing when using two-column mode.

# Enter a comma-separated list of custom field lookup names, as in

# metadata_edit_custom_column_order = ['#genre', '#mytags', '#etc']

metadata_edit_custom_column_order = []

#: The number of seconds to wait before sending emails

# The number of seconds to wait before sending emails when using a

# public email server like gmx/hotmail/gmail. Default is: 5 minutes

# Setting it to lower may cause the server's SPAM controls to kick in,

# making email sending fail. Changes will take effect only after a restart of

# calibre.

public_smtp_relay_delay = 301

#: The maximum width and height for covers saved in the calibre library

# All covers in the calibre library will be resized, preserving aspect ratio,

# to fit within this size. This is to prevent slowdowns caused by extremely

# large covers

maximum_cover_size = (1650, , 2200)

#: Where to send downloaded news

# When automatically sending downloaded news to a connected device, calibre

# will by default send it to the main memory. By changing this tweak, you can

# control where it is sent. Valid values are "main", "carda", "cardb". Note

# that if there isn't enough free space available on the location you choose,

# the files will be sent to the location with the most free space.

send_news_to_device_location = "main"

#: What interfaces should the content server listen on

# By default, the calibre content server listens on '0.0.0.0' which means that it

# accepts IPv4 connections on all interfaces. You can change this to, for

# example, '127.0.0.1' to only listen for connections from the local machine, or

# to '::' to listen to all incoming IPv6 and IPv4 connections (this may not

# work on all operating systems)

server_listen_on = '0.0.0.0'

#: Unified toolbar on OS X

# If you enable this option and restart calibre, the toolbar will be 'unified'

# with the titlebar as is normal for OS X applications. However, doing this has

# various bugs, for instance the minimum width of the toolbar becomes twice

# what it should be and it causes other random bugs on some systems, so turn it

# on at your own risk!

unified_title_toolbar_on_osx = False

#: Save original file when converting/polishing from same format to same format

# When calibre does a conversion from the same format to the same format, for

# example, from EPUB to EPUB, the original file is saved, so that in case the

# conversion is poor, you can tweak the settings and run it again. By setting

# this to False you can prevent calibre from saving the original file.

# Similarly, by setting save_original_format_when_polishing to False you can

# prevent calibre from saving the original file when polishing.

save_original_format = True

save_original_format_when_polishing = True

#: Number of recently viewed books to show

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# Right-clicking the View button shows a list of recently viewed books. Control

# how many should be shown, here.

gui_view_history_size = 15

#: Change the font size of book details in the interface

# Change the font size at which book details are rendered in the side panel and

# comments are rendered in the metadata edit dialog. Set it to a positive or

# negative number to increase or decrease the font size.

change_book_details_font_size_by = 0

#: Compile General Program Mode templates to Python

# Compiled general program mode templates are significantly faster than

# interpreted templates. Setting this tweak to True causes calibre to compile

# (in most cases) general program mode templates. Setting it to False causes

# calibre to use the old behavior -- interpreting the templates. Set the tweak

# to False if some compiled templates produce incorrect values.

# Default:

compile_gpm_templates = True

# No compile: compile_gpm_templates = False

compile_gpm_templates = True

#: What format to default to when using the Tweak feature

# The Tweak feature of calibre allows direct editing of a book format.

# If multiple formats are available, calibre will offer you a choice

# of formats, defaulting to your preferred output format if it is available.

# Set this tweak to a specific value of 'EPUB' or 'AZW3' to always default

# to that format rather than your output format preference.

# Set to a value of 'remember' to use whichever format you chose last time you

# used the Tweak feature.

# Examples:

default_tweak_format = None

(Use output format)

default_tweak_format = 'EPUB'

default_tweak_format = 'remember'

default_tweak_format = None

#: Do not preselect a completion when editing authors/tags/series/etc.

# This means that you can make changes and press Enter and your changes will

# not be overwritten by a matching completion. However, if you wish to use the

# completions you will now have to press Tab to select one before pressing

# Enter. Which technique you prefer will depend on the state of metadata in

# your library and your personal editing style.

preselect_first_completion = False

#: Completion mode when editing authors/tags/series/etc.

# By default, when completing items, calibre will show you all the candidates

# that start with the text you have already typed. You can instead have it show

# all candidates that contain the text you have already typed. To do this, set

# completion_mode to 'contains'. For example, if you type asi it will match both

# Asimov and Quasimodo, whereas the default behavior would match only Asimov.

completion_mode = 'prefix'

#: Recognize numbers inside text when sorting

# This means that when sorting on text fields like title the text "Book 2"

# will sort before the text "Book 100". If you want this behavior, set

# numeric_collation = True note that doing so will cause problems with text

# that starts with numbers and is a little slower.

numeric_collation = False

#: Sort the list of libraries alphabetically

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# The list of libraries in the Copy to Library and Quick Switch menus are

# normally sorted by most used. However, if there are more than a certain

# number of such libraries, the sorting becomes alphabetic. You can set that

# number here. The default is ten libraries.

many_libraries = 10

#: Highlight the virtual library name when using a Virtual Library

# The virtual library name next to the Virtual Library button is highlighted in

# yellow when using a Virtual Library. You can choose the color used for the

# highlight with this tweak. Set it to 'transparent' to disable highlighting.

highlight_virtual_library = 'yellow'

#: Choose available output formats for conversion

# Restrict the list of available output formats in the conversion dialogs.

# For example, if you only want to convert to EPUB and AZW3, change this to

# restrict_output_formats = ['EPUB', 'AZW3']. The default value of None causes

# all available output formats to be present.

restrict_output_formats = None

#: Set the thumbnail image quality used by the content server

# The quality of a thumbnail is largely controlled by the compression quality

# used when creating it. Set this to a larger number to improve the quality.

# Note that the thumbnails get much larger with larger compression quality

# numbers.

# The value can be between 50 and 99

content_server_thumbnail_compression_quality = 75

1.10.4 Overriding icons, templates, et cetera

Note: calibre has direct support foricon themes, there are several icon themes available for calibre, that you can use

by going to Preferences->Look & Feel->Change Icon theme. The icon themes use the same mechanism as described

belowforoverriding static resources.

calibre allows you to override the static resources, like icons, javascript and templates for the metadata jacket, cat-

alogs, etc. with customized versions that you like. All static resources are stored in the resources sub-folder of the

calibre install location. On Windows, this is usually C:\Program Files\Calibre2\resources. On OS X,

/Applications/calibre.app/Contents/Resources/resources/. On linux, if you are using the bi-

nary installer fromthe calibre website it will be /opt/calibre/resources. These paths can change depending

on where you choose toinstall calibre.

You shouldnot change the ﬁles in this resources folder, as your changes will get overwritten the next time you update

calibre. Instead,gotoPreferences->Advanced->Miscellaneous and clickOpencalibre conﬁgurationdirectory. In this

conﬁguration directory,create asub-folder calledresources andplace the ﬁles you wantto overridein it. Place the ﬁles

intheappropriate subfolders, forexample place images in resources/images,etc. calibrewill automaticallyuse

your customﬁle in preference to the built-in one the next time it is started.

For example, if you wanted to change the icon for the Remove books action, you would ﬁrst look in the built-

in resources folder and see that the relevant ﬁle is resources/images/trash.png. Assuming you have

an alternate icon in PNG format called mytrash.png you would save it in the conﬁguration directory as

resources/images/trash.png. All the icons used by the calibre user interface are inresources/images

and its sub-folders.

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