When developing Flask applications, we will inevitably encounter large traffic problems. In order to solve the problem that visitors cannot access the website normally due to excessive traffic, in addition to expanding the hardware configuration of the server to increase bandwidth, there is another way to compress HTML files. To save traffic consumption.

# Install Flask-HTMLmin

pip install Flask-HTMLmin

# Using Flask-HTMLmin

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)
# For example:
# htmlmin = HTMLMIN(app, remove_comments=False, remove_empty_space=True, disable_css_min=True)

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

@app.route('/exempt')
@htmlmin.exempt
def exempted_route():
# The index.html file will not use HTMLMIN compression!
return render_template('index.html')


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

# Effect

The actual feeling after using HTMLMIN is still a little bit, but not very big, mainly because unnecessary spaces and indents are compressed, and the test can save about 5% of the file size.

Notice! After the test, it seems that the br field will be deleted, which is very inconvenient. For the 5% optimization, it is actually dispensable.