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Project Description

django-hmin

Django (1.6+) HTML minification middleware (another one). Key feature - speed. 10x (on large html’s it can be 50x, 100x, 200x or even more) time faster, than htmlmin. Compress html, removes comments, respects (dont remove) conditional comments (IE) by default. Uses cache (can be disabled), that greatly reduce html minification overhead.

Installing

For install django-hmin, run on terminal:

$ pip install django-hmin

Extra install options

Optionally, you can install re2 (fast regular expressions) library (pip install re2 + reqs). Hmin will use it instead of re.

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.

URL exclude

Specify setting:

HMIN_EXCLUDE = ('^base/', '^admin/')

Keep html comments

Specify settings:

HMIN_REMOVE_COMMENTS = False

Cache

By default hmin middleware uses cache (very useful for small and middle web sites, and for big you definitely will use ngx_pagespeed or other “big” solutions). You can disable it by specify setting:

HMIN_USE_CACHE = False

Also you can change time and cache backend (if you want, by default time is 3600, cache backend - “default”):

HMIN_CACHE_TIMEOUT = 86400
HMIN_CACHE_BACKEND = 'my_cache'

Using the function

Just import function minify: from hmin import minify, than you can use it with any html you want. Function definition: 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

Stupid speed benchmark (1)

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.

Stupid speed benchmark (2)

Also i try to compress 2mb of html on my desktop i3 (sandy bridge).

Debug toolbar time: - with hmin cpu was about 220ms without cache, and 87ms with cache - with htmlmin cpu was about 125000ms

Django overhead was about 80ms. Minus overhead, plain time: hmin - 140ms (7ms with cache), htmlmin - ok.

Current problems

  • Doesnt respect CDATA

License

Who cares? Use it whatever you want.

Release History

Release History

0.3.2

This version

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0.3.1

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0.3

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0.2.4

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0.2.3

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0.2.2

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0.2.1

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0.2

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0.1

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Download Files

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File Name & Checksum SHA256 Checksum Help Version File Type Upload Date
django-hmin-0.3.2.tar.gz (4.7 kB) Copy SHA256 Checksum SHA256 Source Dec 9, 2014

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