YaHc is a fork of HTMLCompressor. YaHc is a small, fast and easy to use command line tool and Java library that minifies HTML or XML sources by removing extra whitespaces, comments and other unneeded characters without breaking the content structure. As a result pages become smaller in size and load faster. By providing additional libraries like YUI Compressor or Google Closure Compiler YaHc can automatically optimize JS and CSS parts in the given input.
Here are few examples of YaHc results with default settings:
| Site | Size | Ratio | ||||
|---|---|---|---|---|---|---|
| Original | YaHc | |||||
| Plain | gzip | Plain | gzip | Plain | gzip | |
| github | 12,553b |
3,750b |
10,788b |
3,480b |
14.06% |
7.20% |
| stackoverflow | 195,049b |
30,665b |
166,124b |
29,551b |
14.83% |
3.63% |
| magento | 62,500b |
14,324b |
46,117b |
11,803b |
26.21% |
17.60% |
| cnn | 126,382b |
24,515b |
123,170b |
23,907b |
2.54% |
2.48% |
| stern | 230,186b |
36,338b |
190,388b |
34,024b |
17.29% |
6.37% |
| spiegel | 204,923b |
38,124b |
193,044b |
36,642b |
5.80% |
3.89% |
- JRE v6
- YUI Compressor (optional)
- Google Closure Compiler (optional)
Usage: java -jar yahc.jar [options] [input]
[input] URL, filename, directory, or space separated list
of files and directories to compress.
If none provided reads from <stdin>
Global Options:
-?, /?, -h, --help Displays this help screen
-t, --type <html|xml> If not provided autodetects from file extension
-c, --charset <charset> Charset for reading files, UTF-8 by default
-r, --recursive Process files inside subdirectories
-m, --mask <filemask;...> Filter input files by mask
-o, --output <path> Filename or directory for compression results.
If none provided outputs result to <stdout>
-s, --output-suffix <suffix> Saves the compression result under the input name
with the suffix before the file extension.
-a, --analyze Tries different settings and displays report.
All settings except --js-compressor are ignored
XML Compression Options:
--preserve-comments Preserve comments
--preserve-intertag-spaces Preserve intertag spaces
HTML Compression Options:
--preserve-comments Preserve comments
--preserve-multi-spaces Preserve multiple spaces
--preserve-line-breaks Preserve line breaks
--remove-intertag-spaces Remove intertag spaces
--remove-quotes Remove unneeded quotes
--simple-doctype Change doctype to <!DOCTYPE html>
--remove-style-attr Remove TYPE attribute from STYLE tags
--remove-link-attr Remove TYPE attribute from LINK tags
--remove-script-attr Remove TYPE and LANGUAGE from SCRIPT tags
--remove-form-attr Remove METHOD="GET" from FORM tags
--remove-input-attr Remove TYPE="TEXT" from INPUT tags
--simple-bool-attr Remove values from boolean tag attributes
--remove-js-protocol Remove "javascript:" from inline event handlers
--remove-http-protocol Remove "http:" from tag attributes
--remove-https-protocol Remove "https:" from tag attributes
--remove-surrounding-spaces <min|max|all|custom_list>
Predefined or custom comma separated list of tags
--compress-js Enable inline JavaScript compression
--compress-js-skip-preserve Disable the JavaScript compression for preserved
user blocks
--compress-css Enable inline CSS compression using YUICompressor
--compress-css-skip-preserve Disable the CSS compression for preserved
user blocks
--js-compressor <yui|closure> Switch inline JavaScript compressor between
YUICompressor (default) and Closure Compiler
JavaScript Compression Options for YUI Compressor:
--nomunge Minify only, do not obfuscate
--preserve-semi Preserve all semicolons
--disable-optimizations Disable all micro optimizations
--line-break <column num> Insert a line break after the specified column
JavaScript Compression Options for Google Closure Compiler:
--closure-opt-level <simple|advanced|whitespace>
Sets level of optimization (simple by default)
--closure-externs <file> Sets custom externs file, repeat for each file
--closure-custom-externs-only Disable default built-in externs
CSS Compression Options for YUI Compressor:
--line-break <column num> Insert a line break after the specified column
Custom Block Preservation Options:
--preserve-php Preserve <?php ... ?>, <?php ... EOF and
<?= ... ?>
--preserve-server-script Preserve <% ... %> tags
--preserve-ssi Preserve <!--# ... --> tags
-p, --preserve <path> Read regular expressions that define
custom preservation rules from a file
Please note that if you enable CSS or JavaScript compression, additional
YUI Compressor or Google Closure Compiler jar files must be present
in the same directory as this jar.
For detailed explanations see the official HTMLCompressor docs.
- 1.5.3 (2012-06-03): Newest release of HtmlCompressor
Copyright 2009 - 2012 Sergiy Kovalchuk the original author or other authors.
Copyright 2013 Erik Wohllebe <erik.wohllebe@googlemail.com>.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.