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Apache > HTTP Server > Documentation > Version 2.4 > Modules

Apache Module mod_autoindex

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Description:Generates directory indexes, automatically, similar to the Unix ls command or the Win32 dir shell command
Status:Base
Module Identifier:autoindex_module
Source File:mod_autoindex.c

Summary

The index of a directory can come from one of two sources:

The two functions are separated so that you can completely remove (or replace) automatic index generation should you want to.

Automatic index generation is enabled with using Options +Indexes. See the Options directive for more details.

If the FancyIndexing option is given with the IndexOptions directive, the column headers are links that control the order of the display. If you select a header link, the listing will be regenerated, sorted by the values in that column. Selecting the same header repeatedly toggles between ascending and descending order. These column header links are suppressed with the IndexOptions directive's SuppressColumnSorting option.

Note that when the display is sorted by "Size", it's the actual size of the files that's used, not the displayed value - so a 1010-byte file will always be displayed before a 1011-byte file (if in ascending order) even though they both are shown as "1K".

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Topics

Directives

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See also

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Autoindex Request Query Arguments

Various query string arguments are available to give the client some control over the ordering of the directory listing, as well as what files are listed. If you do not wish to give the client this control, the IndexOptions IgnoreClient option disables that functionality.

The column sorting headers themselves are self-referencing hyperlinks that add the sort query options shown below. Any option below may be added to any request for the directory resource.

Note that the 'P'attern query argument is tested after the usual IndexIgnore directives are processed, and all file names are still subjected to the same criteria as any other autoindex listing. The Query Arguments parser in mod_autoindex will stop abruptly when an unrecognized option is encountered. The Query Arguments must be well formed, according to the table above.

The simple example below, which can be clipped and saved in a header.html file, illustrates these query options. Note that the unknown "X" argument, for the submit button, is listed last to assure the arguments are all parsed before mod_autoindex encounters the X=Go input.

<form action="" method="get">
Show me a <select name="F">
<option value="0"> Plain list</option>
<option value="1" selected="selected"> Fancy list</option>
<option value="2"> Table list</option>
</select>
Sorted by <select name="C">
<option value="N" selected="selected"> Name</option>
<option value="M"> Date Modified</option>
<option value="S"> Size</option>
<option value="D"> Description</option>
</select>
<select name="O">
<option value="A" selected="selected"> Ascending</option>
<option value="D"> Descending</option>
</select>
<select name="V">
<option value="0" selected="selected"> in Normal order</option>
<option value="1"> in Version order</option>
</select>
Matching <input type="text" name="P" value="*" />
<input type="submit" name="X" value="Go" />
</form>

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AddAlt Directive

Description:Alternate text to display for a file, instead of an icon selected by filename
Syntax:AddAlt string file [file] ...
Context:server config, virtual host, directory, .htaccess
Override:Indexes
Status:Base
Module:mod_autoindex

AddAlt provides the alternate text to display for a file, instead of an icon, for FancyIndexing. File is a file extension, partial filename, wild-card expression or full filename for files to describe. If String contains any whitespace, you have to enclose it in quotes (" or '). This alternate text is displayed if the client is image-incapable, has image loading disabled, or fails to retrieve the icon.

AddAlt "PDF file" *.pdf
AddAlt Compressed *.gz *.zip *.Z
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AddAltByEncoding Directive

Description:Alternate text to display for a file instead of an icon selected by MIME-encoding
Syntax:AddAltByEncoding string MIME-encoding [MIME-encoding] ...
Context:server config, virtual host, directory, .htaccess
Override:Indexes
Status:Base
Module:mod_autoindex

AddAltByEncoding provides the alternate text to display for a file, instead of an icon, for FancyIndexing. MIME-encoding is a valid content-encoding, such as x-compress. If String contains any whitespace, you have to enclose it in quotes (" or '). This alternate text is displayed if the client is image-incapable, has image loading disabled, or fails to retrieve the icon.

AddAltByEncoding gzip x-gzip
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AddAltByType Directive

Description:Alternate text to display for a file, instead of an icon selected by MIME content-type
Syntax:AddAltByType string MIME-type [MIME-type] ...
Context:server config, virtual host, directory, .htaccess
Override:Indexes
Status:Base
Module:mod_autoindex

AddAltByType sets the alternate text to display for a file, instead of an icon, for FancyIndexing. MIME-type is a valid content-type, such as text/html. If String contains any whitespace, you have to enclose it in quotes (" or '). This alternate text is displayed if the client is image-incapable, has image loading disabled, or fails to retrieve the icon.

AddAltByType 'plain text' text/plain
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AddDescription Directive

Description:Description to display for a file
Syntax:AddDescription string file [file] ...
Context:server config, virtual host, directory, .htaccess
Override:Indexes
Status:Base
Module:mod_autoindex

This sets the description to display for a file, for FancyIndexing. File is a file extension, partial filename, wild-card expression or full filename for files to describe. String is enclosed in double quotes (").

AddDescription "The planet Mars" mars.gif
AddDescription "My friend Marshall" friends/mars.gif

The typical, default description field is 23 bytes wide. 6 more bytes are added by the IndexOptions SuppressIcon option, 7 bytes are added by the IndexOptions SuppressSize option, and 19 bytes are added by the IndexOptions SuppressLastModified option. Therefore, the widest default the description column is ever assigned is 55 bytes.

Since the File argument may be a partial file name, please remember that a too-short partial filename may match unintended files. For example, le.html will match the file le.html but will also match the file example.html. In the event that there may be ambiguity, use as complete a filename as you can, but keep in mind that the first match encountered will be used, and order your list of AddDescription directives accordingly.

See the DescriptionWidth IndexOptions keyword for details on overriding the size of this column, or allowing descriptions of unlimited length.

Caution

Descriptive text defined with AddDescription may contain HTML markup, such as tags and character entities. If the width of the description column should happen to truncate a tagged element (such as cutting off the end of a bolded phrase), the results may affect the rest of the directory listing.

Arguments with path information

Absolute paths are not currently supported and do not match anything at runtime. Arguments with relative path information, which would normally only be used in htaccess context, are implicitly prefixed with '*/' to avoid matching partial directory names.

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AddIcon Directive

Description:Icon to display for a file selected by name
Syntax:AddIcon icon name [name] ...
Context:server config, virtual host, directory, .htaccess
Override:Indexes
Status:Base
Module:mod_autoindex

This sets the icon to display next to a file ending in name for FancyIndexing. Icon is either a (%-escaped) relative URL to the icon, a fully qualified remote URL, or of the format (alttext,url) where alttext is the text tag given for an icon for non-graphical browsers.

Name is either ^^DIRECTORY^^ for directories, ^^BLANKICON^^ for blank lines (to format the list correctly), a file extension, a wildcard expression, a partial filename or a complete filename.

^^BLANKICON^^ is only used for formatting, and so is unnecessary if you're using IndexOptions HTMLTable.

#Examples
AddIcon (IMG,/icons/image.png) .gif .jpg .png
AddIcon /icons/dir.png ^^DIRECTORY^^
AddIcon /icons/backup.png *~

AddIconByType should be used in preference to AddIcon, when possible.

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AddIconByEncoding Directive

Description:Icon to display next to files selected by MIME content-encoding
Syntax:AddIconByEncoding icon MIME-encoding [MIME-encoding] ...
Context:server config, virtual host, directory, .htaccess
Override:Indexes
Status:Base
Module:mod_autoindex

This sets the icon to display next to files with FancyIndexing. Icon is either a (%-escaped) relative URL to the icon, a fully qualified remote URL, or of the format (alttext,url) where alttext is the text tag given for an icon for non-graphical browsers.

MIME-encoding is a valid content-encoding, such as x-compress.

AddIconByEncoding /icons/compress.png x-compress
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AddIconByType Directive

Description:Icon to display next to files selected by MIME content-type
Syntax:AddIconByType icon MIME-type [MIME-type] ...
Context:server config, virtual host, directory, .htaccess
Override:Indexes
Status:Base
Module:mod_autoindex

This sets the icon to display next to files of type MIME-type for FancyIndexing. Icon is either a (%-escaped) relative URL to the icon, a fully qualified remote URL, or of the format (alttext,url) where alttext is the text tag given for an icon for non-graphical browsers.

MIME-type is a wildcard expression matching required the mime types.

AddIconByType (IMG,/icons/image.png) image/*
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DefaultIcon Directive

Description:Icon to display for files when no specific icon is configured
Syntax:DefaultIcon url-path
Context:server config, virtual host, directory, .htaccess
Override:Indexes
Status:Base
Module:mod_autoindex

The DefaultIcon directive sets the icon to display for files when no specific icon is known, for FancyIndexing. Url-path is a (%-escaped) relative URL to the icon, or a fully qualified remote URL.

DefaultIcon /icon/unknown.png
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HeaderName Directive

Description:Name of the file that will be inserted at the top of the index listing
Syntax:HeaderName filename
Context:server config, virtual host, directory, .htaccess
Override:Indexes
Status:Base
Module:mod_autoindex

The HeaderName directive sets the name of the file that will be inserted at the top of the index listing. Filename is the name of the file to include.

HeaderName HEADER.html

Both HeaderName and ReadmeName now treat Filename as a URI path relative to the one used to access the directory being indexed. If Filename begins with a slash, it will be taken to be relative to the DocumentRoot.

HeaderName /include/HEADER.html

Filename must resolve to a document with a major content type of text/* (e.g., text/html, text/plain, etc.). This means that filename may refer to a CGI script if the script's actual file type (as opposed to its output) is marked as text/html such as with a directive like:

AddType text/html .cgi

Content negotiation will be performed if Options MultiViews is in effect. If filename resolves to a static text/html document (not a CGI script) and either one of the options Includes or IncludesNOEXEC is enabled, the file will be processed for server-side includes (see the mod_include documentation).

If the file specified by HeaderName contains the beginnings of an HTML document (<html>, <head>, etc.) then you will probably want to set IndexOptions +SuppressHTMLPreamble, so that these tags are not repeated.

See also

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IndexHeadInsert Directive

Description:Inserts text in the HEAD section of an index page.
Syntax:IndexHeadInsert "markup ..."
Context:server config, virtual host, directory, .htaccess
Override:Indexes
Status:Base
Module:mod_autoindex

The IndexHeadInsert directive specifies a string to insert in the <head> section of the HTML generated for the index page.

IndexHeadInsert "<link rel=\"sitemap\" href=\"/sitemap.html\">"
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IndexIgnore Directive

Description:Adds to the list of files to hide when listing a directory
Syntax:IndexIgnore file [file] ...
Default:IndexIgnore "."
Context:server config, virtual host, directory, .htaccess
Override:Indexes
Status:Base
Module:mod_autoindex

The IndexIgnore directive adds to the list of files to hide when listing a directory. File is a shell-style wildcard expression or full filename. Multiple IndexIgnore directives add to the list, rather than replacing the list of ignored files. By default, the list contains . (the current directory).

IndexIgnore .??* *~ *# HEADER* README* RCS CVS *,v *,t

Regular Expressions

This directive does not currently work in configuration sections that have regular expression arguments, such as <DirectoryMatch>

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IndexIgnoreReset Directive

Description:Empties the list of files to hide when listing a directory
Syntax:IndexIgnoreReset ON|OFF
Context:server config, virtual host, directory, .htaccess
Override:Indexes
Status:Base
Module:mod_autoindex
Compatibility:2.3.10 and later

The IndexIgnoreReset directive removes any files ignored by IndexIgnore otherwise inherited from other configuration sections.

<Directory "/var/www">
    IndexIgnore *.bak .??* *~ *# HEADER* README* RCS CVS *,v *,t
</Directory>
<Directory "/var/www/backups">
    IndexIgnoreReset ON
    IndexIgnore .??* *# HEADER* README* RCS CVS *,v *,t
</Directory>

Review the default configuration for a list of patterns that you might want to explicitly ignore after using this directive.

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IndexOptions Directive

Description:Various configuration settings for directory indexing
Syntax:IndexOptions [+|-]option [[+|-]option] ...
Default:By default, no options are enabled.
Context:server config, virtual host, directory, .htaccess
Override:Indexes
Status:Base
Module:mod_autoindex

The IndexOptions directive specifies the behavior of the directory indexing. Option can be one of

AddAltClass
Adds an additional CSS class declaration to each row of the directory listing table when IndexOptions HTMLTable is in effect and an IndexStyleSheet is defined. Rather than the standard even and odd classes that would otherwise be applied to each row of the table, a class of even-ALT or odd-ALT where ALT is either the standard alt text associated with the file style (eg. snd, txt, img, etc) or the alt text defined by one of the various AddAlt* directives.
Charset=character-set (Apache HTTP Server 2.0.61 and later)
The Charset keyword allows you to specify the character set of the generated page. The default is UTF-8 on Windows and Mac OS X, and ISO-8859-1 elsewhere. (It depends on whether the underlying file system uses Unicode filenames or not.)
IndexOptions Charset=UTF-8
DescriptionWidth=[n | *]
The DescriptionWidth keyword allows you to specify the width of the description column in characters.
-DescriptionWidth (or unset) allows mod_autoindex to calculate the best width.
DescriptionWidth=n fixes the column width to n bytes wide.
DescriptionWidth=* grows the column to the width necessary to accommodate the longest description string. See the section on AddDescription for dangers inherent in truncating descriptions.
FancyIndexing
This turns on fancy indexing of directories.
FoldersFirst
If this option is enabled, subdirectory listings will always appear first, followed by normal files in the directory. The listing is basically broken into two components, the files and the subdirectories, and each is sorted separately and then displayed subdirectories-first. For instance, if the sort order is descending by name, and FoldersFirst is enabled, subdirectory Zed will be listed before subdirectory Beta, which will be listed before normal files Gamma and Alpha. This option only has an effect if FancyIndexing is also enabled.
HTMLTable
This option with FancyIndexing constructs a simple table for the fancy directory listing. It is necessary for utf-8 enabled platforms or if file names or description text will alternate between left-to-right and right-to-left reading order.
IconsAreLinks
This makes the icons part of the anchor for the filename, for fancy indexing.
IconHeight[=pixels]
Presence of this option, when used with IconWidth, will cause the server to include height and width attributes in the img tag for the file icon. This allows browser to precalculate the page layout without having to wait until all the images have been loaded. If no value is given for the option, it defaults to the standard height of the icons supplied with the Apache httpd software. This option only has an effect if FancyIndexing is also enabled.
IconWidth[=pixels]
Presence of this option, when used with IconHeight, will cause the server to include height and width attributes in the img tag for the file icon. This allows browser to precalculate the page layout without having to wait until all the images have been loaded. If no value is given for the option, it defaults to the standard width of the icons supplied with the Apache httpd software.
IgnoreCase
If this option is enabled, names are sorted in a case-insensitive manner. For instance, if the sort order is ascending by name, and IgnoreCase is enabled, file Zeta will be listed after file alfa (Note: file GAMMA will always be listed before file gamma).
IgnoreClient
This option causes mod_autoindex to ignore all query variables from the client, including sort order (implies SuppressColumnSorting.)
NameWidth=[n | *]
The NameWidth keyword allows you to specify the width of the filename column in bytes.
-NameWidth (or unset) allows mod_autoindex to calculate the best width, but only up to 20 bytes wide.
NameWidth=n fixes the column width to n bytes wide.
NameWidth=* grows the column to the necessary width.
ScanHTMLTitles
This enables the extraction of the title from HTML documents for fancy indexing. If the file does not have a description given by AddDescription then httpd