Flask html response minifier

Last update: Dec 07, 2022

Overview

Flask-HTMLmin

Minify flask text/html mime type responses. Just add MINIFY_HTML = True to your deployment config to minify HTML and text responses of your flask application.

Installation

To install Flask-HTMLmin, simply use pip:

pip install Flask-HTMLmin

Or use pipenv:

pipenv install Flask-HTMLmin

Or use poetry:

poetry add Flask-HTMLmin

Or alternatively, you can download the repository and install it manually by doing:

git clone [email protected]:hamidfzm/Flask-HTMLmin.git
cd Flask-HTMLmin
python setup.py install

Example

from flask import Flask, render_template
from flask_htmlmin import HTMLMIN
    
app = Flask(__name__)
app.config['MINIFY_HTML'] = True

htmlmin = HTMLMIN(app)
# or you can use HTMLMIN.init_app(app)
# pass additional parameters to htmlmin
# HTMLMIN(app, **kwargs)
# example:
# htmlmin = HTMLMIN(app, remove_comments=False, remove_empty_space=True, disable_css_min=True)


@app.route('/')
def main():
    # index.html will be minimized !!!
    return render_template('index.html')


@app.route('/exempt')
@htmlmin.exempt
def exempted_route():
    # index.html will be exempted and not blessed by holy htmlmin !!!
    return render_template('index.html')


if __name__ == '__main__':
    app.run()

TODO

Comments

utf8 crash

Hello

Tried out the module .. ran into an error. [2018-08-01 11:14:04 +0000] [2320] [INFO] Starting gunicorn 19.9.0 [2018-08-01 11:14:04 +0000] [2320] [INFO] Listening at: http://0.0.0.0:5000 (2320) [2018-08-01 11:14:04 +0000] [2320] [INFO] Using worker: gevent [2018-08-01 11:14:04 +0000] [2324] [INFO] Booting worker with pid: 2324 [2018-08-01 11:14:04 +0000] [2325] [INFO] Booting worker with pid: 2325 [2018-08-01 11:14:09 +0000] [2325] [ERROR] Error handling request / Traceback (most recent call last): File "/home/anon/miniconda2/lib/python2.7/site-packages/gunicorn/workers/base_async.py", line 56, in handle self.handle_request(listener_name, req, client, addr) File "/home/anon/miniconda2/lib/python2.7/site-packages/gunicorn/workers/ggevent.py", line 160, in handle_request addr) File "/home/anon/miniconda2/lib/python2.7/site-packages/gunicorn/workers/base_async.py", line 107, in handle_request respiter = self.wsgi(environ, resp.start_response) File "/home/anon/miniconda2/lib/python2.7/site-packages/flask/app.py", line 2309, in call return self.wsgi_app(environ, start_response) File "/home/anon/miniconda2/lib/python2.7/site-packages/flask/app.py", line 2295, in wsgi_app response = self.handle_exception(e) File "/home/anon/miniconda2/lib/python2.7/site-packages/flask/app.py", line 1741, in handle_exception reraise(exc_type, exc_value, tb) File "/home/anon/miniconda2/lib/python2.7/site-packages/flask/app.py", line 2292, in wsgi_app response = self.full_dispatch_request() File "/home/anon/miniconda2/lib/python2.7/site-packages/flask/app.py", line 1816, in full_dispatch_request return self.finalize_request(rv) File "/home/anon/miniconda2/lib/python2.7/site-packages/flask/app.py", line 1833, in finalize_request response = self.process_response(response) File "/home/anon/miniconda2/lib/python2.7/site-packages/flask/app.py", line 2112, in process_response response = handler(response) File "/home/anon/miniconda2/lib/python2.7/site-packages/flask_htmlmin/init.py", line 35, in response_minify self.html_minify.minify(response.get_data(as_text=True)) File "/home/anon/miniconda2/lib/python2.7/site-packages/werkzeug/wrappers.py", line 989, in get_data rv = rv.decode(self.charset) File "/home/anon/miniconda2/lib/python2.7/encodings/utf_8.py", line 16, in decode return codecs.utf_8_decode(input, errors, True) UnicodeDecodeError: 'utf8' codec can't decode byte 0x8b in position 1: invalid start byte
wontfix

opened by ra-esmith 18
OpenTagNotFoundError() redirect code 302
https://github.com/hamidfzm/Flask-HTMLmin/blob/82f828bc6a39d2672bfd152db353e0ee563b48c1/flask_htmlmin.py#L32

if you use flask.redirect, this redirection with code 302 and the response: https://github.com/pallets/werkzeug/blob/4397e61daf66ad43bd5668741c5d876de116a71f/werkzeug/utils.py#L373

'<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">\n' '<title>Redirecting...</title>\n' '<h1>Redirecting...</h1>\n' '<p>You should be redirected automatically to target URL: ' '<a href="%s">%s</a>. If not click the link.'

for htmlmin.parser is not valid: https://github.com/mankyd/htmlmin/blob/dff1163a1ec25fe94aeaeefe702377b5a9e912b3/htmlmin/parser.py#L261

that gives an error OpenTagNotFoundError()
bug
opened by citijk 11
unexpected call to parse_endtag

Hi. Getting a sporadic error 'unexpected call to parse_endtag". I haven't been able to replicate the issue reliably.

Occurs here in parse.py file in htmlmin. assert rawdata[i:i+2] == "</", "unexpected call to parse_endtag"

However as a suggestion, perhaps a try except AssertionError should be added to the reponse_minify method. This way even if the error does occur, the final webpage is still rendered as the original unminified response is returned.
wontfix

opened by arcane99 4
Stop using pytest-runner

setup_requires and tests_requires are firmly deprecated by setuptools upstream, and pytest-runner similarly, since it makes use of functionality that setuptools would like to remove. Stop setting {setup,test}_requires in setup.py, and remove pytest-runner from Pipfile.

Fixes #29

opened by s-t-e-v-e-n-k 3
Can we read htmlmin options from the flask config file?
Hi, thanks for the tool!

What do you think about allowing these settings to be set in the app.config?

default_options = { 'remove_comments': True, 'reduce_empty_attributes': True, 'remove_optional_attribute_quotes': False } default_options.update(kwargs)

As well as the other options for htmlmin from https://htmlmin.readthedocs.io/en/latest/reference.html?

Personally, I'd really like to add the "remove_empty_space". Somehow my output has whitespace between all tags, for example the closing tags on my homepage look like this -

</div> </div> </div> </body> </html>
opened by christopherpickering 2

Example not working

I'm testing the example provided in README:

from flask import Flask, render_template
from flask_htmlmin import HTMLMIN
    
app = Flask(__name__)
app.config['MINIFY_PAGE'] = True

htmlmin = HTMLMIN(app)
# or you can use HTMLMIN.init_app(app)
# pass additional parameters to htmlmin
# HTMLMIN(app, **kwargs)

@app.route('/')
def main():
    # index.html will be minimized !!!
    return render_template('index.html')


@app.route('/exempt')
@htmlmin.exempt
def exempted_route():
    # index.html will be exempted and not blessed by holy htmlmin !!!
    return render_template('index.html')


if __name__ == '__main__':
    app.run()

And this is my templates/index.html

<html>
  <head>
    <meta http-equiv="content-type" content="text/html; charset=utf-8">
  </head>

  <body>
    <div>
      Hello
    </div>
    <div>
      World
    </div>
  </body>
</html>

I'm using python 3.7.2 and there is no minified output.

opened by wiltonsr 2

Example not working

I don't know exactly why, but the example doesn't work in my environment. No minify output.

However your other answer works fine.

http://stackoverflow.com/a/26139704/564979

ty
enhancement

opened by ar-anvd 2
disable_css_min argument leads to error in initialization

Using the example I get this:

htmlmin = HTMLMIN(app, remove_comments=False, remove_empty_space=True, disable_css_min=True)

TypeError: unexpected keyword argument 'disable_css_min'

Also, when I install via pip, I get this: Using legacy setup.py install for Flask-HTMLmin, since package 'wheel' is not installed.
bug

opened by akcode47 1
Bump urllib3 from 1.26.4 to 1.26.5
Bumps urllib3 from 1.26.4 to 1.26.5.

Release notes

Sourced from urllib3's releases.

1.26.5

:warning: IMPORTANT: urllib3 v2.0 will drop support for Python 2: Read more in the v2.0 Roadmap

Fixed deprecation warnings emitted in Python 3.10.

Updated vendored six library to 1.16.0.

Improved performance of URL parser when splitting the authority component.

If you or your organization rely on urllib3 consider supporting us via GitHub Sponsors

Changelog

Sourced from urllib3's changelog.

1.26.5 (2021-05-26)

Fixed deprecation warnings emitted in Python 3.10.

Updated vendored six library to 1.16.0.

Improved performance of URL parser when splitting the authority component.

Commits

d161647 Release 1.26.5

2d4a3fe Improve performance of sub-authority splitting in URL

2698537 Update vendored six to 1.16.0

07bed79 Fix deprecation warnings for Python 3.10 ssl module

d725a9b Add Python 3.10 to GitHub Actions

339ad34 Use pytest==6.2.4 on Python 3.10+

f271c9c Apply latest Black formatting

1884878 [1.26] Properly proxy EOF on the SSLTransport test suite

See full diff in compare view

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dependencies
opened by dependabot[bot] 1
Adding test cases

Hi @hamidfzm thanks for the extension. I'm adding test cases with pytest and 100% coverage tested on py2.7 and py.3.6 to run test python setup.py test

opened by mrf345 1
Ignore OpenTagNotFoundError errors from htmlmin

htmlmin raises OpenTagNotFoundError in some cases (origin unclear). Catch the exception and pass the input through un-minified.

Works around #10, mankyd/htmlmin#46.

opened by df7cb 1

Releases(v2.2.1)

v2.2.1(Oct 24, 2022)
What's Changed

Stop using pytest-runner by @s-t-e-v-e-n-k in https://github.com/hamidfzm/Flask-HTMLmin/pull/31

Fix documentation error in README by @bfontaine in https://github.com/hamidfzm/Flask-HTMLmin/pull/32

Fix https://github.com/hamidfzm/Flask-HTMLmin/issues/30 by @hamidfzm

New Contributors

@s-t-e-v-e-n-k made their first contribution in https://github.com/hamidfzm/Flask-HTMLmin/pull/31

@bfontaine made their first contribution in https://github.com/hamidfzm/Flask-HTMLmin/pull/32

Full Changelog: https://github.com/hamidfzm/Flask-HTMLmin/compare/v2.2.0...v2.2.1
Source code(tar.gz)
Source code(zip)
v2.2.0(Oct 18, 2021)
Inline CSS minification (@cRyp70s)

Update README (@hamidfzm)

Bump Pipfile dependencies (@dependabot)

Source code(tar.gz)
Source code(zip)
v2.1.0(Feb 10, 2021)
Update README (@hamidfzm)

Bump Pipfile dependencies (@dependabot)

Source code(tar.gz)
Source code(zip)
v2.0.3(Feb 10, 2021)
Fix minor issues

Source code(tar.gz)
Source code(zip)
v2.0.2(Mar 30, 2020)
Fix bug in Github publish to PyPi action

Source code(tar.gz)
Source code(zip)
v2.0.1(Mar 30, 2020)
Fix bug in Github publish to PyPi action

Source code(tar.gz)
Source code(zip)
v2.0.0(Mar 30, 2020)
This release comes in the midst of a global pandemic. Wish you a healthy life with lots of success.

Dropped support for Python 2.7 (setuptools stopped supporting it so basically you can't install this project in Python 2.7)

Migrate from Travis CI to Github Actions

Migrate from Coveralls to Codecov

Update README

Update PyPI description

Fix comments typo (@timgates42)

Source code(tar.gz)
Source code(zip)
v1.5.2(Oct 24, 2019)
Fix setup.py issues

Update setup.py categories

Fix tests

Change MINIFY_PAGE to MINIFY_HTML

Add deprecation warning for old config

I'm going to implement a caching solution for minified HTML. Any suggestions would be greatly appreciated.
Source code(tar.gz)
Source code(zip)
v1.5.0(Oct 20, 2018)
Add Route (or URL rule) exemption (@hamidfzm)

Update tests (@hamidfzm)

Add python 3.7 support (@hamidfzm)

Update README (@hamidfzm)

Example

Badges

Source code(tar.gz)
Source code(zip)
v1.4.0(Jul 22, 2018)
Add tests (@mrf345)

Add Travis CI (@hamidfzm)

Add Coveralls (@hamidfzm)

Source code(tar.gz)
Source code(zip)
v1.3.2(Mar 18, 2018)
Fix license BSD is unknown to SPDX (@yecril71pl)

Update README example import package name (@hamidfzm)

Source code(tar.gz)
Source code(zip)
v1.3.1(Oct 7, 2017)
Override defaults (@runartrollet)

Source code(tar.gz)
Source code(zip)
v1.3.0(Oct 5, 2017)
Efficient HTML Minifier (@theitsmith)

Allow passing keyword-arguments (@timesqueezer)

Fix Import deprecation (@runartrollet)

Source code(tar.gz)
Source code(zip)
v1.2.1(Jul 17, 2017)
Add LICENCE and README.md to tgz file

Source code(tar.gz)
Source code(zip)
v1.2(Jun 30, 2016)
Fixed error trying to use HTMLmin with send_from_directory

Source code(tar.gz)
Source code(zip)
v1.1(Jan 14, 2016)
Update README (installation and an example added).

Source code(tar.gz)
Source code(zip)

Owner

Hamid Feizabadi

Web Developer, Python, Go

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