html minify for django
django-html in an HTML minifier for Python with full support for HTML 5. It supports Django, Flask and any other Python web framework. It also provides a command line tool that can be used for static websites or deployment scripts.
Why minify HTML code?
One of important points on client side optimization is minify HTML, with minified HTML code, you reduce the size of data transferred from your server to your client, and your pages load faster.
For install django-htmlmin, run on terminal:
$ [sudo] pip install django-htmlmin
Using the midleware
All you need to do is add htmlmin.middleware.HtmlMinifyMiddleware to your MIDDLEWARE_CLASSES and enable the HTML_MINIFY setting:
MIDDLEWARE_CLASSES = ( # other middleware classes 'htmlmin.middleware.HtmlMinifyMiddleware', ) HTML_MINIFY = True
The default value for the HTML_MINIFY setting is not DEBUG. You only need to set it to True if you want to minify your HTML code when DEBUG is enabled.
Excluding some URLs
If you don’t want to minify all views in your app and it’s under a /my_app URL, you can tell the middleware to not minify the response of your views by adding a EXCLUDE_FROM_MINIFYING setting on your settings.py:
EXCLUDE_FROM_MINIFYING = ('^my_app/', '^admin/')
As you can see, you use a regex pattern for URL exclusion. If you want to exclude all URLs of your app, except a specific view, you can use the decorator minified_response (check the next section above).
The default behaviour of the middleware is remove all comments from HTML. If you want to keep your comments, set the setting KEEP_COMMENTS_ON_MINIFYING to True:
KEEP_COMMENTS_ON_MINIFYING = True
Using the decorator
django-htmlmin also provides a decorator, that you can use only on views you want to minify the response:
from htmlmin.decorators import minified_response @minified_response def home(request): return render_to_response('home.html')
Decorator to avoid response to be minified
You can use not_minified_response decorator on views if you want avoid response to be minified instead to use EXCLUDE_FROM_MINIFYING setting:
from htmlmin.decorators import not_minified_response @not_minified_response def home(request): return render_to_response('home.html')
Using the html_minify function
If you are not working with Django, you can invoke the html_minify function manually:
from htmlmin.minify import html_minify html = '<html> <body>Hello world</body> </html>' minified_html = html_minify(html)
Here is an example with a Flask view:
from flask import Flask from htmlmin.minify import html_minify app = Flask(__name__) @app.route('/') def home(): rendered_html = render_template('home.html') return html_minify(rendered_html)
By default, html_minify function removes all comments. If you want to keep them, you can pass False as value to ignore_comments parameter on that function:
from htmlmin.minify import html_minify html = '<html> <body>Hello world<!-- comment to keep --></body> </html>' minified_html = html_minify(html, ignore_comments=False)
Using command line tool
If you are not even using Python, you can use the pyminify command line tool to minify HTML files:
$ pyminify index.html > index_minified.html
You can also keep comments, if you want:
$ pyminify --keep-comments index.html > index_minified_with_comments.html
Pull requests are very welcomed! Make sure your patches are well tested.
If you are using a virtualenv, all you need is:
$ make test
#cobrateam channel on irc.freenode.net
- [bugfix] Non ascii characters in exclude field fix
- using BeautifulSoup4 as parser
- full support for HTML 5
- [bugfix] don’t remove conditional comments
- [partial bugfix] don’t remove all spaces around some tags
- [bugfix] line breaks inside tags are now replaced by a single white space.
- added support for more HTML 5 tags
- fixed encoding bug on admin interface
- added the KEEP_COMMENTS_ON_MINIFYING setting to keep comments when minifying using the middleware
- skipping <textarea></textarea> content from minifying
- [bugfix] fixed behavior for nesting html 5 tags (issue #14)
- [bugfix] stopped minifying <pre> tags (thanks Cícero Verneck Corrêa)
Unless otherwise noted, the django-htmlmin source files are distributed under the BSD-style license found in the LICENSE file.
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