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Compress responses in your Quart app with gzip or brotli.

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Quart-Compress allows you to easily compress your Quart application's responses with gzip.

The preferred solution is to have a server (like Nginx) automatically compress the static files for you. If you don't have that option Quart-Compress will solve the problem for you.

How it works

Quart-Compress both adds the various headers required for a compressed response and gzips the response data. This makes serving gzip compressed static files extremely easy.

Internally, every time a request is made the extension will check if it matches one of the compressible MIME types and will automatically attach the appropriate headers.


If you use pip then installation is simply:

$ pip install quart-compress

or, if you want the latest github version:

$ pip install git+git://

Using Quart-Compress

Quart-Compress is incredibly simple to use. In order to start gzip'ing your Quart application's assets, the first thing to do is let Quart-Compress know about your quart.Quart application object.

from quart import Quart
from quart_compress import Compress

app = Quart(__name__)

In many cases, however, one cannot expect a Quart instance to be ready at import time, and a common pattern is to return a Quart instance from within a function only after other configuration details have been taken care of. In these cases, Quart-Compress provides a simple function, quart_compress.Compress.init_app, which takes your application as an argument.

from quart import Quart
from quart_compress import Compress

compress = Compress()

def start_app():
    app = Quart(__name__)
    return app

In terms of automatically compressing your assets using gzip, passing your quart.Quart object to the quart_compress.Compress object is all that needs to be done.


Within your Quart application's settings you can provide the following settings to control the behavior of Quart-Compress. None of the settings are required.

Option Description Default
COMPRESS_MIMETYPES Set the list of mimetypes to compress here. [
COMPRESS_LEVEL Specifies the gzip compression level. 6
COMPRESS_MIN_SIZE Specifies the minimum file size threshold for compressing files. 500
COMPRESS_CACHE_KEY Specifies the cache key method for lookup/storage of response data. None
COMPRESS_CACHE_BACKEND Specified the backend for storing the cached response data. None
COMPRESS_REGISTER Specifies if compression should be automatically registered. True

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