HTML minification function, django middleware, decorator
Django HTML minification middleware (another one). Key feature - speed. Up to 60x time faster, than htmlmin. Compress html, removes comments, respects (dont remove) conditional comments (IE) by default.
For install django-hmin, run on terminal:
$ pip install django-hmin
Using the midleware
All you need to do is add two middlewares to your MIDDLEWARE_CLASSES:
MIDDLEWARE_CLASSES = ( # other middleware classes 'hmin.middleware.MinMiddleware', 'hmin.middleware.MarkMiddleware', )
If you’re using Django’s caching middleware, MarkMiddleware should go after FetchFromCacheMiddleware, and MinMiddleware should go after UpdateCacheMiddleware:
MIDDLEWARE_CLASSES = ( 'django.middleware.cache.UpdateCacheMiddleware', 'hmin.middleware.MinMiddleware', # other middleware classes 'django.middleware.cache.FetchFromCacheMiddleware', 'hmin.middleware.MarkMiddleware', )
You can optionally specify the HTML_MINIFY setting:
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.
HMIN_EXCLUDE = ('^base/', '^admin/')
Keep html comments
HMIN_REMOVE_COMMENTS = False
Using the function
Just import function minify: from hmin import minify, than you can use it with any html you want. Definition of minify function: def minify(content, remove_comments=True)
Using the decorator
Just import decorator minify_plain: from hmin.decorators import minify_plain, than you can minify any function you want:
@minify_plain() def my_cool_func(): <...> return some_plain_html
Or, if you want to keep html comments:
@minify_plain(False) def my_cool_func(): <...> return some_plain_html
I try to compress 1mb of html (i think, your usual html is slightly thiner) on my i7 laptop processor and measure time with django-debug-toolbar.
Django overhead took about 40ms (all), this is time without minification, just plain html, django, etc.
Then i install hmin and htmlmin and just look at the debug toolbar numbers (this is very silly and simple “benchmark”):
with hmin cpu was about 60ms (min)
with htmlmin cpu was about 1200ms (min)
Minus overhead, plain time: hmin - 20ms, htmlmin - 1160ms.
Probably, you can get other numbers. But hmin really faster than htmlmin.
Who cares? Use it whatever you want.
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