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dotnet add package UnDotNet.HtmlToText --version 1.1.0
NuGet\Install-Package UnDotNet.HtmlToText -Version 1.1.0
<PackageReference Include="UnDotNet.HtmlToText" Version="1.1.0" />
<PackageVersion Include="UnDotNet.HtmlToText" Version="1.1.0" />Directory.Packages.props
<PackageReference Include="UnDotNet.HtmlToText" />Project file
paket add UnDotNet.HtmlToText --version 1.1.0
#r "nuget: UnDotNet.HtmlToText, 1.1.0"
#:package UnDotNet.HtmlToText@1.1.0
#addin nuget:?package=UnDotNet.HtmlToText&version=1.1.0Install as a Cake Addin
#tool nuget:?package=UnDotNet.HtmlToText&version=1.1.0Install as a Cake Tool
HTML to Text converter for DotNet
Ported from node-html-to-text
Advanced converter that parses HTML and returns beautiful text.
Add NuGet package UnDotNet.HtmlToText to your project
using UnDotNet.HtmlToText;
var text = new HtmlToTextConverter().Convert(html);
using UnDotNet.HtmlToText;
var options = new HtmlToTextOptions {
Wordwrap: 120,
// ...
};
var text = new HtmlToTextConverter().Convert(html, options);
| Option | Default | Description |
|---|---|---|
BaseElements |
Describes which parts of the input document have to be converted and present in the output text, and in what order. | |
BaseElements.Selectors |
['body'] |
Elements matching any of provided selectors will be processed and included in the output text, with all inner content.<br/>Refer to Supported selectors section below. |
BaseElements.OrderBy |
'selectors' |
'selectors' - arrange base elements in the same order as BaseElements.Selectors array;<br/>'occurrence' - arrange base elements in the order they are found in the input document. |
BaseElements.ReturnDomByDefault |
true |
Convert the entire document if none of provided selectors match. |
EncodeCharacters |
{} |
A dictionary with characters that should be replaced in the output text and corresponding escape sequences. |
Formatters |
{} |
An object with custom formatting functions for specific elements (see Override formatting section below). |
Limits |
Describes how to limit the output text in case of large HTML documents. | |
Limits.Ellipsis |
'...' |
A string to insert in place of skipped content. |
Limits.MaxBaseElements |
undefined |
Stop looking for more base elements after reaching this amount. Unlimited if undefined. |
Limits.MaxChildNodes |
undefined |
Maximum number of child nodes of a single node to be added to the output. Unlimited if undefined. |
Limits.MaxDepth |
undefined |
Stop looking for nodes to add to the output below this depth in the DOM tree. Unlimited if undefined. |
Limits.MaxInputLength |
16_777_216 |
If the input string is longer than this value - it will be truncated and a message will be sent to stderr. Ellipsis is not used in this case. Unlimited if undefined. |
LongWordSplit |
Describes how to wrap long words. | |
LongWordSplit.WrapCharacters |
[] |
An array containing the characters that may be wrapped on. Checked in order, search stops once line length requirement can be met. |
LongWordSplit.ForceWrapOnLimit |
false |
Break long words at the line length limit in case no better wrap opportunities found. |
PreserveNewlines |
false |
By default, any newlines \n from the input HTML are collapsed into space as any other HTML whitespace characters. If true, these newlines will be preserved in the output. This is only useful when input HTML carries some plain text formatting instead of proper tags. |
Selectors |
[] |
Describes how different HTML elements should be formatted. See Selectors section below. |
WhitespaceCharacters |
' \t\r\n\f\u200b' |
A string of characters that are recognized as HTML whitespace. Default value uses the set of characters defined in HTML4 standard. (It includes Zero-width space compared to living standard.) |
Wordwrap |
80 |
After how many chars a line break should follow.<br/>Set to false to disable word-wrapping. |
Following selectors have a formatter specified as a part of the default configuration. Everything can be overridden, but you don't have to repeat the format or options that you don't want to override. (But keep in mind this is only true for the same selector. There is no connection between different selectors.)
| Selector | Default format | Notes |
|---|---|---|
* |
inline |
Universal selector. |
a |
anchor |
|
article |
block |
|
aside |
block |
|
blockquote |
blockquote |
|
br |
lineBreak |
|
div |
block |
|
footer |
block |
|
form |
block |
|
h1 |
heading |
|
h2 |
heading |
|
h3 |
heading |
|
h4 |
heading |
|
h5 |
heading |
|
h6 |
heading |
|
header |
block |
|
hr |
horizontalLine |
|
img |
image |
|
main |
block |
|
nav |
block |
|
ol |
orderedList |
|
p |
paragraph |
|
pre |
pre |
|
table |
table |
Equivalent to block. Use dataTable instead for tabular data. |
ul |
unorderedList |
|
wbr |
wbr |
More formatters also available for use:
| Format | Description |
|---|---|
dataTable |
For visually-accurate tables. Note that this might be not search-friendly (output text will look like gibberish to a machine when there is any wrapped cell contents) and also better to be avoided for tables used as a page layout tool. |
skip |
Skips the given tag with it's contents without printing anything. |
blockString |
Insert a block with the given string literal (formatOptions.string) instead of the tag. |
blockTag |
Render an element as HTML block tag, convert it's contents to text. |
blockHtml |
Render an element with all it's children as HTML block. |
inlineString |
Insert the given string literal (formatOptions.string) inline instead of the tag. |
inlineSurround |
Render inline element wrapped with given strings (formatOptions.prefix and formatOptions.suffix). |
inlineTag |
Render an element as inline HTML tag, convert it's contents to text. |
inlineHtml |
Render an element with all it's children as inline HTML. |
Following options are available for built-in formatters.
| Option | Default | Applies to | Description |
|---|---|---|---|
LeadingLineBreaks |
1, 2 or 3 |
all block-level formatters | Number of line breaks to separate previous block from this one.<br/>Note that N+1 line breaks are needed to make N empty lines. |
TrailingLineBreaks |
1 or 2 |
all block-level formatters | Number of line breaks to separate this block from the next one.<br/>Note that N+1 line breaks are needed to make N empty lines. |
BaseUrl |
null |
anchor, image |
Server host for link href attributes and image src attributes relative to the root (the ones that start with /).<br/>For example, with baseUrl = 'http://asdf.com' and <a href='/dir/subdir'>...</a> the link in the text will be http://asdf.com/dir/subdir. |
LinkBrackets |
['[', ']'] |
anchor, image |
Surround links with these brackets.<br/>Set to false or ['', ''] to disable. |
PathRewrite |
undefined |
anchor, image |
A function to rewrite link href attributes and image src attributes. Optional second argument is the metadata object.<br/>Applied before baseUrl. |
HideLinkHrefIfSameAsText |
false |
anchor |
By default links are translated in the following way:<br/><a href='link'>text</a> ⇒ becomes ⇒ text [link].<br/>If this option is set to true and link and text are the same, [link] will be omitted and only text will be present. |
IgnoreHref |
false |
anchor |
Ignore all links. Only process internal text of anchor tags. |
NoAnchorUrl |
true |
anchor |
Ignore anchor links (where href='#...'). |
ItemPrefix |
' * ' |
unorderedList |
String prefix for each list item. |
Uppercase |
true |
heading |
By default, headings (<h1>, <h2>, etc) are uppercased.<br/>Set this to false to leave headings as they are. |
Length |
undefined |
horizontalLine |
Length of the line. If undefined then wordwrap value is used. Falls back to 40 if that's also disabled. |
TrimEmptyLines |
true |
blockquote |
Trim empty lines from blockquote.<br/>While empty lines should be preserved in HTML, space-saving behavior is chosen as default for convenience. |
UppercaseHeaderCells |
true |
dataTable |
By default, heading cells (<th>) are uppercased.<br/>Set this to false to leave heading cells as they are. |
MaxColumnWidth |
60 |
dataTable |
Data table cell content will be wrapped to fit this width instead of global wordwrap limit.<br/>Set this to undefined in order to fall back to wordwrap limit. |
ColSpacing |
3 |
dataTable |
Number of spaces between data table columns. |
RowSpacing |
0 |
dataTable |
Number of empty lines between data table rows. |
StringLiteral |
'' |
blockString, inlineString |
A string to be inserted in place of a tag. |
Prefix |
'' |
inlineSurround |
String prefix to be inserted before inline tag contents. |
Suffix |
'' |
inlineSurround |
String suffix to be inserted after inline tag contents. |
| Product | Versions Compatible and additional computed target framework versions. |
|---|---|
| .NET | net6.0 net6.0 is compatible. net6.0-android net6.0-android was computed. net6.0-ios net6.0-ios was computed. net6.0-maccatalyst net6.0-maccatalyst was computed. net6.0-macos net6.0-macos was computed. net6.0-tvos net6.0-tvos was computed. net6.0-windows net6.0-windows was computed. net7.0 net7.0 was computed. net7.0-android net7.0-android was computed. net7.0-ios net7.0-ios was computed. net7.0-maccatalyst net7.0-maccatalyst was computed. net7.0-macos net7.0-macos was computed. net7.0-tvos net7.0-tvos was computed. net7.0-windows net7.0-windows was computed. net8.0 net8.0 is compatible. net8.0-android net8.0-android was computed. net8.0-browser net8.0-browser was computed. net8.0-ios net8.0-ios was computed. net8.0-maccatalyst net8.0-maccatalyst was computed. net8.0-macos net8.0-macos was computed. net8.0-tvos net8.0-tvos was computed. net8.0-windows net8.0-windows was computed. net9.0 net9.0 was computed. net9.0-android net9.0-android was computed. net9.0-browser net9.0-browser was computed. net9.0-ios net9.0-ios was computed. net9.0-maccatalyst net9.0-maccatalyst was computed. net9.0-macos net9.0-macos was computed. net9.0-tvos net9.0-tvos was computed. net9.0-windows net9.0-windows was computed. net10.0 net10.0 was computed. net10.0-android net10.0-android was computed. net10.0-browser net10.0-browser was computed. net10.0-ios net10.0-ios was computed. net10.0-maccatalyst net10.0-maccatalyst was computed. net10.0-macos net10.0-macos was computed. net10.0-tvos net10.0-tvos was computed. net10.0-windows net10.0-windows was computed. |
| .NET Framework | net48 net48 is compatible. net481 net481 was computed. |
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