Option Groups

Document Display
Document In and Out
File Input-Output
Diagnostics
Encoding
Cleanup
Entities
Repair
Transformation
Teaching Tidy
Pretty Print

Document Display Options		Top
Option	Type	Default
gnu-emacs	Boolean	no
markup	Boolean	yes
mute	String	-
mute-id	Boolean	no
quiet	Boolean	no
show-body-only	Enum	no
show-errors	Integer	6
show-filename	Boolean	no
show-info	Boolean	yes
show-warnings	Boolean	yes

Document In and Out Options		Top
Option	Type	Default
add-meta-charset	Boolean	no
add-xml-decl	Boolean	no
add-xml-space	Boolean	no
doctype	String	auto
input-xml	Boolean	no
output-html	Boolean	no
output-xhtml	Boolean	no
output-xml	Boolean	no

File Input-Output Options		Top
Option	Type	Default
error-file	String	-
keep-time	Boolean	no
output-file	String	-
write-back	Boolean	no

Diagnostics Options		Top
Option	Type	Default
accessibility-check	Enum	0 (Tidy Classic)
force-output	Boolean	no
show-meta-change	Boolean	no
warn-proprietary-attributes	Boolean	yes

Encoding Options		Top
Option	Type	Default
char-encoding	Encoding	utf8
input-encoding	Encoding	utf8
newline	Enum	LF
output-bom	Enum	auto
output-encoding	Encoding	utf8

Cleanup Options		Top
Option	Type	Default
bare	Boolean	no
clean	Boolean	no
drop-empty-elements	Boolean	yes
drop-empty-paras	Boolean	yes
drop-proprietary-attributes	Boolean	no
gdoc	Boolean	no
logical-emphasis	Boolean	no
merge-divs	Enum	auto
merge-spans	Enum	auto
word-2000	Boolean	no

Entities Options		Top
Option	Type	Default
ascii-chars	Boolean	no
ncr	Boolean	yes
numeric-entities	Boolean	no
preserve-entities	Boolean	no
quote-ampersand	Boolean	yes
quote-marks	Boolean	no
quote-nbsp	Boolean	yes

Repair Options		Top
Option	Type	Default
alt-text	String	-
anchor-as-name	Boolean	yes
assume-xml-procins	Boolean	no
coerce-endtags	Boolean	yes
css-prefix	String	c
custom-tags	Enum	no
enclose-block-text	Boolean	no
enclose-text	Boolean	no
escape-scripts	Boolean	yes
fix-backslash	Boolean	yes
fix-bad-comments	Enum	auto
fix-style-tags	Boolean	yes
fix-uri	Boolean	yes
literal-attributes	Boolean	no
lower-literals	Boolean	yes
repeated-attributes	Enum	keep-last
skip-nested	Boolean	yes
strict-tags-attributes	Boolean	no
uppercase-attributes	Enum	no
uppercase-tags	Boolean	no

Transformation Options		Top
Option	Type	Default
decorate-inferred-ul	Boolean	no
escape-cdata	Boolean	no
hide-comments	Boolean	no
join-classes	Boolean	no
join-styles	Boolean	yes
merge-emphasis	Boolean	yes
replace-color	Boolean	no

Teaching Tidy Options		Top
Option	Type	Default
new-blocklevel-tags	Tag Names	-
new-empty-tags	Tag Names	-
new-inline-tags	Tag Names	-
new-pre-tags	Tag Names	-

Pretty Print Options		Top
Option	Type	Default
break-before-br	Boolean	no
indent	Enum	no
indent-attributes	Boolean	no
indent-cdata	Boolean	no
indent-spaces	Integer	2
indent-with-tabs	Boolean	no
keep-tabs	Boolean	no
omit-optional-tags	Boolean	no
priority-attributes	Attributes Names	-
punctuation-wrap	Boolean	no
sort-attributes	Enum	none
tab-size	Integer	8
tidy-mark	Boolean	yes
vertical-space	Enum	no
wrap	Integer	68
wrap-asp	Boolean	yes
wrap-attributes	Boolean	no
wrap-jste	Boolean	yes
wrap-php	Boolean	no
wrap-script-literals	Boolean	no
wrap-sections	Boolean	yes


Document Display
gnu-emacs		Top
Type:	Boolean
Default:	no
Example:	no, yes
See Also:	show-filename
	This option specifies that Tidy should change the format for reporting errors and warnings to a format that is more easily parsed by GNU Emacs or some other program. It changes them from the default line <line number> column <column number> - (Error\|Warning): <message> to a form which includes the input filename: <filename>:<line number>:<column number>: (Error\|Warning): <message>

markup		Top
Type:	Boolean
Default:	yes
Example:	no, yes
	This option specifies if Tidy should generate a pretty printed version of the markup. Note that Tidy won't generate a pretty printed version if it finds significant errors (see `force-output`).

mute		Top
Type:	String
Default:	-
Example:	-
See Also:	mute-id
	Use this option to prevent Tidy from displaying certain types of report output, for example, for conditions that you wish to ignore. This option takes a list of one or more keys indicating the message type to mute. You can discover these message keys by using the `mute-id` configuration option and examining Tidy's output.

mute-id		Top
Type:	Boolean
Default:	no
Example:	no, yes
See Also:	mute
	This option indicates whether or not Tidy should display message ID's with each of its error reports. This could be useful if you wanted to use the `mute` configuration option in order to filter out certain report messages.

quiet		Top
Type:	Boolean
Default:	no
Example:	no, yes
	When enabled, this option limits Tidy's non-document output to report only document warnings and errors.

show-body-only		Top
Type:	Enum
Default:	no
Example:	no, yes, auto
	This option specifies if Tidy should print only the contents of the body tag as an HTML fragment. If set to `auto`, this is performed only if the body tag has been inferred. Useful for incorporating existing whole pages as a portion of another page. This option has no effect if XML output is requested.

show-errors		Top
Type:	Integer
Default:	6
Example:	0, 1, 2, ...
	This option specifies the number Tidy uses to determine if further errors should be shown. If set to `0`, then no errors are shown.

show-filename		Top
Type:	Boolean
Default:	no
Example:	no, yes
See Also:	gnu-emacs
	This option specifies if Tidy should show the filename in messages. eg: tidy -q -e --show-filename yes index.html index.html: line 43 column 3 - Warning: replacing invalid UTF-8 bytes (char. code U+00A9)

show-info		Top
Type:	Boolean
Default:	yes
Example:	no, yes
	This option specifies if Tidy should display info-level messages.

show-warnings		Top
Type:	Boolean
Default:	yes
Example:	no, yes
	This option specifies if Tidy should suppress warnings. This can be useful when a few errors are hidden in a flurry of warnings.


Document In and Out
add-meta-charset		Top
Type:	Boolean
Default:	no
Example:	no, yes
	This option, when enabled, adds a `<meta>` element and sets the `charset` attribute to the encoding of the document. Set this option to `yes` to enable it.

add-xml-decl		Top
Type:	Boolean
Default:	no
Example:	no, yes
See Also:	char-encoding, output-encoding
	This option specifies if Tidy should add the XML declaration when outputting XML or XHTML. Note that if the input already includes an `<?xml ... ?>` declaration then this option will be ignored. If the encoding for the output is different from `ascii`, one of the `utf*` encodings, or `raw`, then the declaration is always added as required by the XML standard.

add-xml-space		Top
Type:	Boolean
Default:	no
Example:	no, yes
	This option specifies if Tidy should add `xml:space="preserve"` to elements such as `<pre>`, `<style>` and `<script>` when generating XML. This is needed if the whitespace in such elements is to be parsed appropriately without having access to the DTD.

doctype		Top
Type:	String
Default:	auto
Example:	-
	This option specifies the DOCTYPE declaration generated by Tidy. If set to `omit` the output won't contain a DOCTYPE declaration. Note this this also implies `numeric-entities` is set to `yes`. If set to `html5` the DOCTYPE is set to `<!DOCTYPE html>`. If set to `auto` (the default) Tidy will use an educated guess based upon the contents of the document. Note that selecting this option will not change the current document's DOCTYPE on output. If set to `strict`, Tidy will set the DOCTYPE to the HTML4 or XHTML1 strict DTD. If set to `loose`, the DOCTYPE is set to the HTML4 or XHTML1 loose (transitional) DTD. Alternatively, you can supply a string for the formal public identifier (FPI). For example: `doctype: "-//ACME//DTD HTML 3.14159//EN"` If you specify the FPI for an XHTML document, Tidy will set the system identifier to an empty string. For an HTML document, Tidy adds a system identifier only if one was already present in order to preserve the processing mode of some browsers. Tidy leaves the DOCTYPE for generic XML documents unchanged. This option does not offer a validation of document conformance.

input-xml		Top
Type:	Boolean
Default:	no
Example:	no, yes
	This option specifies if Tidy should use the XML parser rather than the error correcting HTML parser.

output-html		Top
Type:	Boolean
Default:	no
Example:	no, yes
	This option specifies if Tidy should generate pretty printed output, writing it as HTML.

output-xhtml		Top
Type:	Boolean
Default:	no
Example:	no, yes
	This option specifies if Tidy should generate pretty printed output, writing it as extensible HTML. This option causes Tidy to set the DOCTYPE and default namespace as appropriate to XHTML, and will use the corrected value in output regardless of other sources. For XHTML, entities can be written as named or numeric entities according to the setting of `numeric-entities`. The original case of tags and attributes will be preserved, regardless of other options.

output-xml		Top
Type:	Boolean
Default:	no
Example:	no, yes
	This option specifies if Tidy should pretty print output, writing it as well-formed XML. Any entities not defined in XML 1.0 will be written as numeric entities to allow them to be parsed by an XML parser. The original case of tags and attributes will be preserved, regardless of other options.


File Input-Output
error-file		Top
Type:	String
Default:	-
Example:	-
See Also:	output-file
	This option specifies the error file Tidy uses for errors and warnings. Normally errors and warnings are output to `stderr`.

keep-time		Top
Type:	Boolean
Default:	no
Example:	no, yes
	This option specifies if Tidy should keep the original modification time of files that Tidy modifies in place. Setting the option to `yes` allows you to tidy files without changing the file modification date, which may be useful with certain tools that use the modification date for things such as automatic server deployment. Note this feature is not supported on some platforms.

output-file		Top
Type:	String
Default:	-
Example:	-
See Also:	error-file
	This option specifies the output file Tidy uses for markup. Normally markup is written to `stdout`.

write-back		Top
Type:	Boolean
Default:	no
Example:	no, yes
	This option specifies if Tidy should write back the tidied markup to the same file it read from. You are advised to keep copies of important files before tidying them, as on rare occasions the result may not be what you expect.


Diagnostics
accessibility-check		Top
Type:	Enum
Default:	0 (Tidy Classic)
Example:	0 (Tidy Classic), 1 (Priority 1 Checks), 2 (Priority 2 Checks), 3 (Priority 3 Checks)
	This option specifies what level of accessibility checking, if any, that Tidy should perform. Level `0 (Tidy Classic)` performs no additional accessibility checking. Level `1 (Priority 1 Checks)` performs the Priority Level 1 checks. Level `2 (Priority 2 Checks)` performs the Priority Level 1 and 2 checks. Level `3 (Priority 3 Checks)` performs the Priority Level 1, 2, and 3 checks. For more information on Tidy's accessibility checking, including the specific checks that are made for each Priority Level, please visit Tidy's Accessibility Page.

force-output		Top
Type:	Boolean
Default:	no
Example:	no, yes
	This option specifies if Tidy should produce output even if errors are encountered. Use this option with care; if Tidy reports an error, this means Tidy was not able to (or is not sure how to) fix the error, so the resulting output may not reflect your intention.

show-meta-change		Top
Type:	Boolean
Default:	no
Example:	no, yes
	This option enables a message whenever Tidy changes the `content` attribute of a meta charset declaration to match the encoding of the document. Set this option to `yes` to enable it.

warn-proprietary-attributes		Top
Type:	Boolean
Default:	yes
Example:	no, yes
	This option specifies if Tidy should warn on proprietary attributes.


Encoding
char-encoding		Top
Type:	Encoding
Default:	utf8
Example:	raw, ascii, latin0, latin1, utf8, iso2022, mac, win1252, ibm858, utf16le, utf16be, utf16, big5, shiftjis
See Also:	input-encoding, output-encoding
	This option specifies the character encoding Tidy uses for input, and when set, automatically chooses an appropriate character encoding to be used for output. The output encoding Tidy chooses may be different from the input encoding. For `ascii`, `latin0`, `ibm858`, `mac`, and `win1252` input encodings, the `output-encoding` option will automatically be set to `ascii`. You can set `output-encoding` manually to override this. For other input encodings, the `output-encoding` option will automatically be set to the the same value. Regardless of the preset value, you can set `output-encoding` manually to override this. Tidy is not an encoding converter. Although the Latin and UTF encodings can be mixed freely, it is not possible to convert Asian encodings to Latin encodings with Tidy.

input-encoding		Top
Type:	Encoding
Default:	utf8
Example:	raw, ascii, latin0, latin1, utf8, iso2022, mac, win1252, ibm858, utf16le, utf16be, utf16, big5, shiftjis
See Also:	char-encoding
	This option specifies the character encoding Tidy uses for input. Tidy makes certain assumptions about some of the input encodings. For `ascii`, Tidy will accept Latin-1 (ISO-8859-1) character values and convert them to entities as necessary. For `raw`, Tidy will make no assumptions about the character values and will pass them unchanged to output. For `mac` and `win1252`, vendor specific characters values will be accepted and converted to entities as necessary. Asian encodings such as `iso2022` will be handled appropriately assuming the corresponding `output-encoding` is also specified. Tidy is not an encoding converter. Although the Latin and UTF encodings can be mixed freely, it is not possible to convert Asian encodings to Latin encodings with Tidy.

newline		Top
Type:	Enum
Default:	LF
Example:	LF, CRLF, CR
	The default is appropriate to the current platform. Genrally `CRLF` on PC-DOS, Windows and OS/2; `CR` on Classic Mac OS; and `LF` everywhere else (Linux, macOS, and Unix).

output-bom		Top
Type:	Enum
Default:	auto
Example:	no, yes, auto
	This option specifies if Tidy should write a Unicode Byte Order Mark character (BOM; also known as Zero Width No-Break Space; has value of U+FEFF) to the beginning of the output, and only applies to UTF-8 and UTF-16 output encodings. If set to `auto` this option causes Tidy to write a BOM to the output only if a BOM was present at the beginning of the input. A BOM is always written for XML/XHTML output using UTF-16 output encodings.

output-encoding		Top
Type:	Encoding
Default:	utf8
Example:	raw, ascii, latin0, latin1, utf8, iso2022, mac, win1252, ibm858, utf16le, utf16be, utf16, big5, shiftjis
See Also:	char-encoding
	This option specifies the character encoding Tidy uses for output. Some of the output encodings affect whether or not some characters are translated to entities, although in all cases, some entities will be written according to other Tidy configuration options. For `ascii`, `mac`, and `win1252` output encodings, entities will be used for all characters with values over 127. For `raw` output, Tidy will write values above 127 without translating them to entities. Output using `latin1` will cause Tidy to write character values higher than 255 as entities. The UTF family such as `utf8` will write output in the respective UTF encoding. Asian output encodings such as `iso2022` will write output in the specified encoding, assuming a corresponding `input-encoding` was specified. Tidy is not an encoding converter. Although the Latin and UTF encodings can be mixed freely, it is not possible to convert Asian encodings to Latin encodings with Tidy.


Cleanup
bare		Top
Type:	Boolean
Default:	no
Example:	no, yes
	This option specifies if Tidy should replace smart quotes and em dashes with ASCII, and output spaces rather than non-breaking spaces, where they exist in the input.

clean		Top
Type:	Boolean
Default:	no
Example:	no, yes
	This option specifies if Tidy should perform cleaning of some legacy presentational tags (currently `<i>`, `<b>`, `<center>` when enclosed within appropriate inline tags, and `<font>`). If set to `yes`, then the legacy tags will be replaced with CSS `<style>` tags and structural markup as appropriate.

drop-empty-elements		Top
Type:	Boolean
Default:	yes
Example:	no, yes
	This option specifies if Tidy should discard empty elements.

drop-empty-paras		Top
Type:	Boolean
Default:	yes
Example:	no, yes
	This option specifies if Tidy should discard empty paragraphs.

drop-proprietary-attributes		Top
Type:	Boolean
Default:	no
Example:	no, yes
	This option specifies if Tidy should strip out proprietary attributes, such as Microsoft data binding attributes. Additionally attributes that aren't permitted in the output version of HTML will be dropped if used with `strict-tags-attributes`.

gdoc		Top
Type:	Boolean
Default:	no
Example:	no, yes
	This option specifies if Tidy should enable specific behavior for cleaning up HTML exported from Google Docs.

logical-emphasis		Top
Type:	Boolean
Default:	no
Example:	no, yes
	This option specifies if Tidy should replace any occurrence of `<i>` with `<em>` and any occurrence of `<b>` with `<strong>`. Any attributes are preserved unchanged. This option can be set independently of the `clean` option.

merge-divs		Top
Type:	Enum
Default:	auto
Example:	no, yes, auto
See Also:	clean, merge-spans
	This option can be used to modify the behavior of `clean` when set to `yes`. This option specifies if Tidy should merge nested `<div>` such as `<div><div>...</div></div>`. If set to `auto` the attributes of the inner `<div>` are moved to the outer one. Nested `<div>` with `id` attributes are not merged. If set to `yes` the attributes of the inner `<div>` are discarded with the exception of `class` and `style`.

merge-spans		Top
Type:	Enum
Default:	auto
Example:	no, yes, auto
See Also:	clean, merge-divs
	This option can be used to modify the behavior of `clean` when set to `yes`. This option specifies if Tidy should merge nested `<span>` such as `<span><span>...</span></span>`. The algorithm is identical to the one used by `merge-divs`.

word-2000		Top
Type:	Boolean
Default:	no
Example:	no, yes
	This option specifies if Tidy should go to great pains to strip out all the surplus stuff Microsoft Word 2000 inserts when you save Word documents as "Web pages". It doesn't handle embedded images or VML. You should consider saving using Word's Save As..., and choosing Web Page, Filtered.


Entities
ascii-chars		Top
Type:	Boolean
Default:	no
Example:	no, yes
See Also:	clean
	Can be used to modify behavior of the `clean` option when set to `yes`. If set to `yes` when using `clean`, `&emdash;`, `”`, and other named character entities are downgraded to their closest ASCII equivalents.

ncr		Top
Type:	Boolean
Default:	yes
Example:	no, yes
	This option specifies if Tidy should allow numeric character references.

numeric-entities		Top
Type:	Boolean
Default:	no
Example:	no, yes
See Also:	doctype, preserve-entities
	This option specifies if Tidy should output entities other than the built-in HTML entities (`&`, `<`, `>`, and `"`) in the numeric rather than the named entity form. Only entities compatible with the DOCTYPE declaration generated are used. Entities that can be represented in the output encoding are translated correspondingly.

preserve-entities		Top
Type:	Boolean
Default:	no
Example:	no, yes
	This option specifies if Tidy should preserve well-formed entities as found in the input.

quote-ampersand		Top
Type:	Boolean
Default:	yes
Example:	no, yes
	This option specifies if Tidy should output unadorned `&` characters as `&`, in legacy doctypes only.

quote-marks		Top
Type:	Boolean
Default:	no
Example:	no, yes
	This option specifies if Tidy should output `"` characters as `"` as is preferred by some editing environments. The apostrophe character `'` is written out as `'` since many web browsers don't yet support `'`.

quote-nbsp		Top
Type:	Boolean
Default:	yes
Example:	no, yes
	This option specifies if Tidy should output non-breaking space characters as entities, rather than as the Unicode character value 160 (decimal).


Repair
alt-text		Top
Type:	String
Default:	-
Example:	-
	This option specifies the default `alt=` text Tidy uses for `<img>` attributes when the `alt=` attribute is missing. Use with care, as it is your responsibility to make your documents accessible to people who cannot see the images.

anchor-as-name		Top
Type:	Boolean
Default:	yes
Example:	no, yes
	This option controls the deletion or addition of the `name` attribute in elements where it can serve as anchor. If set to `yes` a `name` attribute, if not already existing, is added along an existing `id` attribute if the DTD allows it. If set to `no` any existing name attribute is removed if an `id` attribute exists or has been added.

assume-xml-procins		Top
Type:	Boolean
Default:	no
Example:	no, yes
	This option specifies if Tidy should change the parsing of processing instructions to require `?>` as the terminator rather than `>`. This option is automatically set if the input is in XML.

coerce-endtags		Top
Type:	Boolean
Default:	yes
Example:	no, yes
	This option specifies if Tidy should coerce a start tag into an end tag in cases where it looks like an end tag was probably intended; for example, given `<span>foo <b>bar<b> baz</span>` Tidy will output `<span>foo <b>bar</b> baz</span>`

css-prefix		Top
Type:	String
Default:	c
Example:	-
	This option specifies the prefix that Tidy uses for styles rules. By default, `c` will be used.

custom-tags		Top
Type:	Enum
Default:	no
Example:	no, blocklevel, empty, inline, pre
See Also:	new-blocklevel-tags, new-empty-tags, new-inline-tags, new-pre-tags
	This option enables the use of tags for autonomous custom elements, e.g. `<flag-icon>` with Tidy. Custom tags are disabled if this value is `no`. Other settings - `blocklevel`, `empty`, `inline`, and `pre` will treat all detected custom tags accordingly. The use of `new-blocklevel-tags`, `new-empty-tags`, `new-inline-tags`, or `new-pre-tags` will override the treatment of custom tags by this configuration option. This may be useful if you have different types of custom tags. When enabled these tags are determined during the processing of your document using opening tags; matching closing tags will be recognized accordingly, and unknown closing tags will be discarded.

enclose-block-text		Top
Type:	Boolean
Default:	no
Example:	no, yes
	This option specifies if Tidy should insert a `<p>` element to enclose any text it finds in any element that allows mixed content for HTML transitional but not HTML strict.

enclose-text		Top
Type:	Boolean
Default:	no
Example:	no, yes
	This option specifies if Tidy should enclose any text it finds in the body element within a `<p>` element. This is useful when you want to take existing HTML and use it with a style sheet.

escape-scripts		Top
Type:	Boolean
Default:	yes
Example:	no, yes
	This option causes items that look like closing tags, like `</g` to be escaped to `<\/g`. Set this option to `no` if you do not want this.

fix-backslash		Top
Type:	Boolean
Default:	yes
Example:	no, yes
	This option specifies if Tidy should replace backslash characters `\` in URLs with forward slashes `/`.

fix-bad-comments		Top
Type:	Enum
Default:	auto
Example:	no, yes, auto
	This option specifies if Tidy should replace unexpected hyphens with `=` characters when it comes across adjacent hyphens. The default is `auto` will which will act as `no` for HTML5 document types, and `yes` for all other document types. HTML has abandoned SGML comment syntax, and allows adjacent hyphens for all versions of HTML, although XML and XHTML do not. If you plan to support older browsers that require SGML comment syntax, then consider setting this value to `yes`.

fix-style-tags		Top
Type:	Boolean
Default:	yes
Example:	no, yes
	This option specifies if Tidy should move all style tags to the head of the document.

fix-uri		Top
Type:	Boolean
Default:	yes
Example:	no, yes
	This option specifies if Tidy should check attribute values that carry URIs for illegal characters and if such are found, escape them as HTML4 recommends.

literal-attributes		Top
Type:	Boolean
Default:	no
Example:	no, yes
	This option specifies how Tidy deals with whitespace characters within attribute values. If the value is `no` Tidy normalizes attribute values by replacing any newline or tab with a single space, and further by replacing any contiguous whitespace with a single space. To force Tidy to preserve the original, literal values of all attributes and ensure that whitespace within attribute values is passed through unchanged, set this option to `yes`.

lower-literals		Top
Type:	Boolean
Default:	yes
Example:	no, yes
	This option specifies if Tidy should convert the value of an attribute that takes a list of predefined values to lower case. This is required for XHTML documents.

repeated-attributes		Top
Type:	Enum
Default:	keep-last
Example:	keep-first, keep-last
See Also:	join-classes, join-styles
	This option specifies if Tidy should keep the first or last attribute, if an attribute is repeated, e.g. has two `align` attributes.

skip-nested		Top
Type:	Boolean
Default:	yes
Example:	no, yes
	This option specifies that Tidy should skip nested tags when parsing script and style data.

strict-tags-attributes		Top
Type:	Boolean
Default:	no
Example:	no, yes
	This options ensures that tags and attributes are applicable for the version of HTML that Tidy outputs. When set to `yes` and the output document type is a strict doctype, then Tidy will report errors. If the output document type is a loose or transitional doctype, then Tidy will report warnings. Additionally if `drop-proprietary-attributes` is enabled, then not applicable attributes will be dropped, too. When set to `no`, these checks are not performed.

uppercase-attributes		Top
Type:	Enum
Default:	no
Example:	no, yes, preserve
	This option specifies if Tidy should output attribute names in upper case. When set to `no`, attribute names will be written in lower case. Specifying `yes` will output attribute names in upper case, and `preserve` can used to leave attribute names untouched. When using XML input, the original case is always preserved.

uppercase-tags		Top
Type:	Boolean
Default:	no
Example:	no, yes
	This option specifies if Tidy should output tag names in upper case. The default is `no` which results in lower case tag names, except for XML input where the original case is preserved.


Transformation
decorate-inferred-ul		Top
Type:	Boolean
Default:	no
Example:	no, yes
	This option specifies if Tidy should decorate inferred `<ul>` elements with some CSS markup to avoid indentation to the right.

escape-cdata		Top
Type:	Boolean
Default:	no
Example:	no, yes
	This option specifies if Tidy should convert `<![CDATA[]]>` sections to normal text.

hide-comments		Top
Type:	Boolean
Default:	no
Example:	no, yes
	This option specifies if Tidy should not print out comments.

join-classes		Top
Type:	Boolean
Default:	no
Example:	no, yes
	This option specifies if Tidy should combine class names to generate a single, new class name if multiple class assignments are detected on an element.

join-styles		Top
Type:	Boolean
Default:	yes
Example:	no, yes
	This option specifies if Tidy should combine styles to generate a single, new style if multiple style values are detected on an element.

merge-emphasis		Top
Type:	Boolean
Default:	yes
Example:	no, yes
	This option specifies if Tidy should merge nested `<b>` and `<i>` elements; for example, for the case `<b class="rtop-2">foo <b class="r2-2">bar</b> baz</b>`, Tidy will output `<b class="rtop-2">foo bar baz</b>`.

replace-color		Top
Type:	Boolean
Default:	no
Example:	no, yes
	This option specifies if Tidy should replace numeric values in color attributes with HTML/XHTML color names where defined, e.g. replace `#ffffff` with `white`.


Teaching Tidy
new-blocklevel-tags		Top
Type:	Tag Names
Default:	-
Example:	tagX, tagY, ...
See Also:	new-empty-tags, new-inline-tags, new-pre-tags, custom-tags
	This option specifies new block-level tags. This option takes a space or comma separated list of tag names. Unless you declare new tags, Tidy will refuse to generate a tidied file if the input includes previously unknown tags. Note you can't change the content model for elements such as `<table>`, `<ul>`, `<ol>` and `<dl>`. This option is ignored in XML mode.

new-empty-tags		Top
Type:	Tag Names
Default:	-
Example:	tagX, tagY, ...
See Also:	new-blocklevel-tags, new-inline-tags, new-pre-tags, custom-tags
	This option specifies new empty inline tags. This option takes a space or comma separated list of tag names. Unless you declare new tags, Tidy will refuse to generate a tidied file if the input includes previously unknown tags. Remember to also declare empty tags as either inline or blocklevel. This option is ignored in XML mode.

new-inline-tags		Top
Type:	Tag Names
Default:	-
Example:	tagX, tagY, ...
See Also:	new-blocklevel-tags, new-empty-tags, new-pre-tags, custom-tags
	This option specifies new non-empty inline tags. This option takes a space or comma separated list of tag names. Unless you declare new tags, Tidy will refuse to generate a tidied file if the input includes previously unknown tags. This option is ignored in XML mode.

new-pre-tags		Top
Type:	Tag Names
Default:	-
Example:	tagX, tagY, ...
See Also:	new-blocklevel-tags, new-empty-tags, new-inline-tags, custom-tags
	This option specifies new tags that are to be processed in exactly the same way as HTML's `<pre>` element. This option takes a space or comma separated list of tag names. Unless you declare new tags, Tidy will refuse to generate a tidied file if the input includes previously unknown tags. Note you cannot as yet add new CDATA elements. This option is ignored in XML mode.


Pretty Print
break-before-br		Top
Type:	Boolean
Default:	no
Example:	no, yes
	This option specifies if Tidy should output a line break before each `<br>` element.

indent		Top
Type:	Enum
Default:	no
Example:	no, yes, auto
See Also:	indent-spaces
	This option specifies if Tidy should indent block-level tags. If set to `auto` Tidy will decide whether or not to indent the content of tags such as `<title>`, `<h1>`-`<h6>`, `<li>`, `<td>`, or `<p>` based on the content including a block-level element. Setting `indent` to `yes` can expose layout bugs in some browsers. Use the option `indent-spaces` to control the number of spaces or tabs output per level of indent, and `indent-with-tabs` to specify whether spaces or tabs are used.

indent-attributes		Top
Type:	Boolean
Default:	no
Example:	no, yes
	This option specifies if Tidy should begin each attribute on a new line.

indent-cdata		Top
Type:	Boolean
Default:	no
Example:	no, yes
	This option specifies if Tidy should indent `<![CDATA[]]>` sections.

indent-spaces		Top
Type:	Integer
Default:	2
Example:	0, 1, 2, ...
See Also:	indent
	This option specifies the number of spaces or tabs that Tidy uses to indent content when `indent` is enabled. Note that the default value for this option is dependent upon the value of `indent-with-tabs` (see also).

indent-with-tabs		Top
Type:	Boolean
Default:	no
Example:	no, yes
	This option specifies if Tidy should indent with tabs instead of spaces, assuming `indent` is `yes`. Set it to `yes` to indent using tabs instead of the default spaces. Use the option `indent-spaces` to control the number of tabs output per level of indent. Note that when `indent-with-tabs` is enabled the default value of `indent-spaces` is reset to `1`. Note `tab-size` controls converting input tabs to spaces. Set it to zero to retain input tabs.

keep-tabs		Top
Type:	Boolean
Default:	no
Example:	no, yes
	With the default `no` Tidy will replace all source tabs with spaces, controlled by the option `tab-size`, and the current line offset. Of course, except in the special blocks/elements enumerated below, this will later be reduced to just one space. If set `yes` this option specifies Tidy should keep certain tabs found in the source, but only in preformatted blocks like `<pre>`, and other CDATA elements like `<script>`, `<style>`, and other pseudo elements like `<?php ... ?>`. As always, all other tabs, or sequences of tabs, in the source will continue to be replaced with a space.

omit-optional-tags		Top
Type:	Boolean
Default:	no
Example:	no, yes
	This option specifies if Tidy should omit optional start tags and end tags when generating output. Setting this option causes all tags for the `<html>`, `<head>`, and `<body>` elements to be omitted from output, as well as such end tags as `</p>`, `</li>`, `</dt>`, `</dd>`, `</option>`, `</tr>`, `</td>`, and `</th>`. This option is ignored for XML output.

priority-attributes		Top
Type:	Attributes Names
Default:	-
Example:	attributeX, attributeY, ...
	This option allows prioritizing the writing of attributes in tidied documents, allowing them to written before the other attributes of an element. For example, you might specify that id and name are written before every other attribute. This option takes a space or comma separated list of attribute names.

punctuation-wrap		Top
Type:	Boolean
Default:	no
Example:	no, yes
	This option specifies if Tidy should line wrap after some Unicode or Chinese punctuation characters.

sort-attributes		Top
Type:	Enum
Default:	none
Example:	none, alpha
See Also:	priority-attributes
	This option specifies that Tidy should sort attributes within an element using the specified sort algorithm. If set to `alpha`, the algorithm is an ascending alphabetic sort. When used while sorting with `priority-attributes`, any attribute sorting will take place after the priority attributes have been output.

tab-size		Top
Type:	Integer
Default:	8
Example:	0, 1, 2, ...
	This option specifies the number of columns that Tidy uses between successive tab stops. It is used to map tabs to spaces when reading the input.

tidy-mark		Top
Type:	Boolean
Default:	yes
Example:	no, yes
	This option specifies if Tidy should add a `meta` element to the document head to indicate that the document has been tidied. Tidy won't add a meta element if one is already present.

vertical-space		Top
Type:	Enum
Default:	no
Example:	no, yes, auto
	This option specifies if Tidy should add some extra empty lines for readability. The default is `no`. If set to `auto` Tidy will eliminate nearly all newline characters.

wrap		Top
Type:	Integer
Default:	68
Example:	0 (no wrapping), 1, 2, ...
	This option specifies the right margin Tidy uses for line wrapping. Tidy tries to wrap lines so that they do not exceed this length. Set `wrap` to `0` (zero) if you want to disable line wrapping.

wrap-asp		Top
Type:	Boolean
Default:	yes
Example:	no, yes
	This option specifies if Tidy should line wrap text contained within ASP pseudo elements, which look like: `<% ... %>`.

wrap-attributes		Top
Type:	Boolean
Default:	no
Example:	no, yes
See Also:	wrap-script-literals, literal-attributes
	This option specifies if Tidy should line-wrap attribute values, meaning that if the value of an attribute causes a line to exceed the width specified by `wrap`, Tidy will add one or more line breaks to the value, causing it to be wrapped into multiple lines. Note that this option can be set independently of `wrap-script-literals`. By default Tidy replaces any newline or tab with a single space and replaces any sequences of whitespace with a single space. To force Tidy to preserve the original, literal values of all attributes, and ensure that whitespace characters within attribute values are passed through unchanged, set `literal-attributes` to `yes`.

wrap-jste		Top
Type:	Boolean
Default:	yes
Example:	no, yes
	This option specifies if Tidy should line wrap text contained within JSTE pseudo elements, which look like: `<# ... #>`.

wrap-php		Top
Type:	Boolean
Default:	no
Example:	no, yes
	This option specifies if Tidy should add a new line after a PHP pseudo elements, which look like: `<?php ... ?>`.

wrap-script-literals		Top
Type:	Boolean
Default:	no
Example:	no, yes
See Also:	wrap-attributes
	This option specifies if Tidy should line wrap string literals assigned to element event handler attributes, such as element.onmouseover().

wrap-sections		Top
Type:	Boolean
Default:	yes
Example:	no, yes
	This option specifies if Tidy should line wrap text contained within `<![ ... ]>` section tags.

Option Groups

Document Display

gnu-emacs

markup

mute

mute-id

quiet

show-body-only

show-errors

show-filename

show-info

show-warnings

Document In and Out

add-meta-charset

add-xml-decl

add-xml-space

doctype

input-xml

output-html

output-xhtml

output-xml

File Input-Output

error-file

keep-time

output-file

write-back

Diagnostics

accessibility-check

force-output

show-meta-change

warn-proprietary-attributes

Encoding

char-encoding

input-encoding

newline

output-bom

output-encoding

Cleanup

bare

clean

drop-empty-elements

drop-empty-paras

drop-proprietary-attributes

gdoc

logical-emphasis

merge-divs

merge-spans

word-2000

Entities

ascii-chars

ncr

numeric-entities

preserve-entities

quote-ampersand

quote-marks

quote-nbsp

Repair

alt-text

anchor-as-name

assume-xml-procins

coerce-endtags

css-prefix

custom-tags

enclose-block-text

enclose-text

escape-scripts

fix-backslash

fix-bad-comments

fix-style-tags

fix-uri

literal-attributes

lower-literals

repeated-attributes

skip-nested

strict-tags-attributes

uppercase-attributes

uppercase-tags

Transformation

decorate-inferred-ul

escape-cdata